HyperMesh and BatchMesher

Loads

Loads

Previous topic Next topic Expand/collapse all hidden text  

Loads

Previous topic Next topic JavaScript is required for expanding text JavaScript is required for the print function  

Load entities have an associated load configuration.  A load configuration determines how to draw, store, and work with the load. The follwoing load configurations are supported:

Accelerations

Constraints

Fluxes

Forces

Moments

Pressures

Temperatures

Velocities

 

Solver Card Support for Loads


hmtoggle_arrow1OptiStruct

General boundary conditions should not be collected into specific load collectors.  Organizing loads and constraints into a specific load collector may result in an error termination.

The following is a list of OptiStruct cards, which are represented as various types of loads.

Supported Card

Solver Description

Supported Load Types

Notes

ASET

Defines the boundary degrees of freedom of a superelement assembly for matrix reduction.

Constraints

 

ASET1

Defines the boundary degrees of freedom of a superelement assembly for matrix reduction.

Constraints

 

DAREA

Defines scale (area) factors for dynamic loads.

Constraints

 

DELAY

Defines the time delay term tau in the equations of the dynamic loading function.

Constraints

 

DEFORM

Defines enforced axial deformation for one-dimensional elements for use in statics problems.

Flux

 

DPHASE

Defines the phase lead term lower theta in the equation of the dynamic loading function.

Constraints

 

FORCE

Defines a static force at a grid point by specifying a vector.

Force

 

FORCE1

Static Force, Alternate Form 1

Force

 

MBFRC

Defines a constant force at a grid point by specifying a vector.

Force

 

MBFRCC

Defines a curve force at a grid point by specifying a vector.

Force

 

MBMNT

Defines a constant moment at a grid point by specifying a vector.

Moment

 

MBMNTC

Defines a curve moment at a grid point by specifying a vector.

Moment

 

MOMENT

Defines a static moment at a grid point by specifying a vector.

Moment

 

MOMENT1

Static Moment, Alternate Form 1

Moment

 

MOTNG

Defines a constant grid point motion.

Constraint

 

MOTNGC

Defines a grid point motion vs. time by specifying a curve.

Constraint

 

PLOAD

Defines a static pressure load on a triangular or quadrilateral element.

Pressure

 

PLOAD1

Defines concentrated, uniformly distributed, or linearly distributed applied loads to the CBAR or CBEAM elements at user-chosen points along the axis.

Pressure

 

PLOAD2

Defines a uniform static pressure load applied to two-dimensional elements.  Only QUAD4 or TRIA3 elements may have a pressure load applied to them via this entry.

Pressure

 

PLOAD4

Defines a load on a face of a HEXA, PENTA, TETRA, PYRA, TRIA3, or QUAD4 element.

Pressure

 

QBDY1

Defines a uniform heat flux for CHBDYE elements.

Flux

 

QVOL

Rate of volumetric heat addition for a conduction element.  

Flux

 

SPC

Defines sets of single-point constraints and enforced displacements.

Constraint

 

SPCD

Defines an enforced displacement value for static analysis, which is requested as a LOAD.

Constraint

 

SUPORT

Defines determinate reaction degrees of freedom in a free body.

Constraint

 

SUPORT1

Defines determinate reaction degrees of freedom in a free body.  The SUPORT1 bulk data entry must be requested in the I/O Options or Subcase Information sections by the SUPORT1 data selection command.

Constraint

 

TEMP

Defines temperature at grid points for determination of Thermal Loading and Stress recovery.

Temperature

 

TIC(D) or (V)

Defines values for the initial conditions of variables used in structural transient analysis.  Both displacement and velocity values may be specified at independent degrees-of-freedom.

Constraint

 

USET

Set of Degrees of Freedom for Residual Vector Calculation.

Constraint

 

USET1

Alternate Form of USET1

Constraint

 

hmtoggle_arrow1Abaqus

Each load or constraint must belong to a load collector.  Loads or constraints in history data (under *STEP) should be organized into load collectors with HISTORY card image.  These load collectors need to be added to a load step from the Load Steps panel.  Loads or constraints in model data, however, should be organized into load collectors with the INITIAL_CONDITION card image.  These load collectors do not need to be added to a load step.  All loads and boundary conditions are recommended to be defined from the Step Manager in the Abaqus user profile.

Note:The Import tab - Options section provides the user to select to Expand Loads on Sets. Selecting this option means that all loads and boundary conditions on sets are expanded to individual nodes and elements.

Supported Card

Solver Description

Supported Load Types

Supported Parameters

*BOUNDARY (electric potential, dof 9)

Specifies flux boundary conditions for piezoelectric analysis.

Flux

FIXED

USER

LOADCASE

AMPLITUDE

REGION TYPE = {LAGRANGIAN, SLIDING, EULERIAN}

OP

*BOUNDARY (structural)

Creates structural boundary conditions.

Constraint

TYPE = {DISPLACEMENT,
VELOCITY, ACCELERATION}

FIXED

USER

LOADCASE

AMPLITUDE

REGION TYPE = {LAGRANGIAN,SLIDING, EULERIAN}

OP

*BOUNDARY
(temperature, dof 11)

Specifies temperature boundary conditions.

Temperatures

FIXED

USER

LOADCASE

AMPLITUDE

REGION TYPE = {LAGRANGIAN,SLIDING, EULERIAN}

OP

*CECHARGE

Specifies concentrated electric charges for piezoelectric analysis.

Flux

OP

*CECURRENT

Specifies concentrated current in electric conduction.

Flux

OP

*CFLUX

Specify concentrated fluxes in heat transfer or mass diffusion analyses.

Flux

OP

*CLOAD

Creates concentrated forces.

Force

AMPLITUDE

LOADCASE

CYCLIC MODE

FOLLOWER

REGION TYPE = {LAGRANGIAN, SLIDING, EULERIAN}

OP

*CLOAD

Creates concentrated moments.

Moment

AMPLITUDE

LOADCASE

CYCLIC MODE

FOLLOWER

REGION TYPE = {LAGRANGIAN, SLIDING, EULERIAN}

OP

*COUPLING

Define a surface-based coupling constraint

Constraint

CONSTRAINT NAME

REF NODE

SURFACE

INFLUENCE RADIUS

ORIENTATION

*DECHARGE

Distributes electric charges for piezoelectric analysis.

Pressure

OP

*DFLUX

Specify distributed fluxes in heat transfer or mass diffusion analyses.

Pressure

OP

*DISTRIBUTING

Define a distributing coupling constraint

Constraint

WEIGHTING METHOD = {UNIFORM, LINEAR, QUADRATIC, CUBIC}

*DISTRIBUTING COUPLING

Specify nodes and weighting for distributing coupling elements

See Elements.

MASS

*DLOAD

Specifies distributed loads

Pressure

AMPLITUDE

LOADCASE

CYCLIC MODE

REGION TYPE = {LAGRANGIAN, SLIDING, EULERIAN}

OP

*FILM

Define film coefficients and associated sink temperatures.

Pressure

AMPLITUDE

FILM AMPLITUDE

REGION TYPE = {LAGRANGIAN/SLIDING, EULERIAN}

OP

*KINEMATIC

Define a kinematic coupling constraint

Multi-point Constraints

 

*KINEMATIC COUPLING

Constrain all or specific degrees of freedom of a set of nodes to the rigid body motion of a reference node

Multi-point Constraints

See Elements.

ORIENTATION

*MPC

Define multi-point constraints

Multi-point Constraints

See Elements.

BEAM

LINK

PIN

TIE

*RADIATE

Specify radiation conditions in heat transfer analyses

Pressure

AMPLITUDE

OP

REGION TYPE (explicit)

*TEMPERATURE

Specifies predefined temperature field.

Temperature

AMPLITUDE

BSTEP

BINC

ESTEP

EINC

INPUT

FILE

MIDSIDE

OP

 

hmtoggle_arrow1Actran

Supported Card

Solver Description

Supported Load Types

Notes

ACCELERATION

Boundary conditions

Face BC

 

ADMITTANCE

Boundary conditions

Face BC

 

DISPLACEMENT

Boundary conditions

Displacement

 

DISTRIBUTED_LOAD

Boundary conditions

Face BC

 

DISTRIBUTED_PRESSURE

Boundary conditions

Face BC

 

DIV_TOTAL

Boundary conditions

Face BC

 

INFINITE ADMITTANCE

Boundary conditions

Face BC

 

POINT_LOAD

Boundary conditions

Load

 

PRESSURE

Boundary conditions

Pressure

 

VELOCITY

Boundary conditions

Face BC

 

hmtoggle_arrow1ANSYS

Supported Card

Solver Description

Supported Load Types

Notes

BF

Defines a nodal body force load.

Flux

FLUE and HGEN labels are

 

BF_FLUE

 

Flux

Supported under the Flux panel.

BF_HGEN

 

Flux

Supported under the Flux panel.

BF_TEMP

 

Temperatures

(Structural temperatures) label is supported under the Temperatures panel.

BFE_FLUE

Defines an element body force load

Flux

 

BFE_HGEN

 

Flux

 

BFE_TEMP

 

Flux

 

ConvBulkTe

 

Pressure

 

ConvFilmCo

 

Pressure

 

D_CONSTRNT

Defines DOF constraints at nodes.

Constraint

 

D_TEMP

 

Temperature

 

D_VOLT

 

Constraint

 

F_FLOW

Specifies force loads at nodes.

Flux

 

F_HEAT

 

Flux

 

FLOTRAN

Specifies "FLOTRAN data settings" as the subsequent status topic.

Pressure

FLOTRAN surface load label “FSI [fluid-structure interaction flag]” is available under pressure load.

You must use DOF1 to add value for this label.

FORCE

Selects the element nodal force type for output.

Force

 

FORCE2

 

Moment

 

HFLUX

 

Pressure

 

IC_CONSTRN

Specifies initial conditions at nodes.

Constraint

 

IC_TEMP

 

Temperature

 

IC_VOLT

 

Constraint

 

PRESSURE

 

Pressure

 

SFE

Defines elemental surface load

Pressure, Convection, Heatflux

Structural, thermal and Fluid labels are covered

SFE

Surface load

Structural, thermal, and fluid

Structural label: PRES

Thermal label: CONV, HLFUX

Fluid label: FSI

hmtoggle_arrow1LS-DYNA

Several load types cause three cards to be output for x, y, and z components.  During input, these are grouped into one load. Loads cannot be applied to sets, components, or boxes.  Load curves are input and output.  Use the Card Editor to select load curves.

Unless mentioned in the Notes column, load cards cannot be edited.

Supported Card

Solver Description

Supported Load Types

Notes

*BOUNDARY_
PRESCRIBED_MOTION_
NODE

Define an imposed nodal motion (velocity, acceleration, or displacement) on a node or a set of nodes.

Constraints

Type 2; Card 26, VAD = 2

DEATH, BIRTH

 

DOF 4, -4, 8, -8, 9, -9, 10, -10, 11, -11 are not supported

*BOUNDARY_
PRESCRIBED_MOTION_
NODE

Define an imposed nodal motion (velocity, acceleration, or displacement) on a node or a set of nodes.

Velocity

Type 1; Card 26;
VAD = 0

 

DOF 4, -4, 8, -8, 9, -9, 10, -10, 11, -11 are not supported

*BOUNDARY_
PRESCRIBED_MOTION_
NODE

Define an imposed nodal motion (velocity, acceleration, or displacement) on a node or a set of nodes.

Acceleration

Type 1

Card 26
VAD = 1

 

DOF 4, -4, 8, -8, 9, -9, 10, -10, 11, -11 are not supported

*BOUNDARY_
PRESCRIBED_MOTION_
NODE_(ID)

 

Velocity

 

*BOUNDARY_
PRESCRIBED_MOTION_
NODE_(ID)

 

Constraints

Type 2; Card 26, VAD = 2

dynaName, DEATH, BIRTH

 

*BOUNDARY_
PRESCRIBED_MOTION_
RIGID

Define an imposed nodal motion (velocity, acceleration, or displacement) on a node or a set of nodes.

PID, DOF, VAD, LCID, SF, VID, DEATH, BIRTH

RIGID_LOCAL and _SET options are supported.

*BOUNDARY_
PRESCRIBED_MOTION_
RIGID_ID

Define an imposed nodal motion (velocity, acceleration, or displacement) on a node or a set of nodes.

Dyna_Name

PID, DOF, VAD, LCID, SF, VID, DEATH, BIRTH

 

*BOUNDARY_
PRESCRIBED_MOTION_
RIGID_LOCAL

 

PID, DOF, VAD, LCID, SF, VID, DEATH, BIRTH

Title

 

*BOUNDARY_
PRESCRIBED_MOTION_
RIGID_LOCAL_ID

 

Dyna_Name

PID, DOF, VAD, LCID, SF, VID, DEATH, BIRTH

 

*BOUNDARY_
PRESCRIBED_MOTION_
SET

Define an imposed nodal motion (velocity, acceleration, or displacement) on a node or a set of nodes.

NSID, DOF, VAD, LCID, SF, VID, DEATH, BIRTH

TITLE

 

*BOUNDARY_
PRESCRIBED_MOTION_
SET_ID

 

Dyna_Name

NSID, DOF, VAD, LCID, SF, VID, DEATH, BIRTH

 

*BOUNDARY_SPC_NODE

Define nodal single point constraint

Constraints

Type 1; Card 13 SPC

CID

 

*BOUNDARY_SPC_NODE_
(ID)

 

Constraints

dynaName, CID

 

*BOUNDARY_
TEMPERATURE_NODE

Define temperature boundary conditions for a thermal or coupled thermal/structural analysis.

Temperature

LCID, LOC

 

*CONSTRAINED_GLOBAL

Define a global boundary constraint plane.

Constraints

 

*INITIAL_TEMPERATURE_
NODE

Define initial nodal point temperatures using nodal set IDs or node number.s

Temperatures

LOC

 

*INITIAL_VELOCITY

Define initial nodal point translational velocities using nodal set IDs.

Type 2

Card 30
INITV = 3

For structured output, global velocity is set to 0.0.  For structured input, non-zero values for INITV = 1 or INITV = 5 create velocities. INITV values of 2, 4, 6, and 7 are ignored.

*INITIAL_VELOCITY_NODE

Define initial nodal point velocities for a node.

Rotation

 

*LOAD_BEAM_ELEMENT

Defines load on beam elements

Pressure

 

*LOAD_MASK

Apply a distributed pressure load over a three-dimensional shell part

n/a

 

*LOAD_NODE_POINT

Apply a concentrated nodal force to a node or a set of nodes.

Force

Type 1; Card 23; Point Loads

FollowerForce

LS-DYNA Load Configs 1, 2, 3 and 4

A load curve can be selected for these loads.

*LOAD_NODE_POINT

Apply a concentrated nodal force to a node or a set of nodes.

Moment

Type 1

Card 23
Point Loads

LS-DYNA Load Configs 5, 6 7 and 8.

 

*LOAD_SEGMENT

Apply the distributed pressure load over one triangular or quadrilateral segment defined by four, six or eight nodes.

Pressure

LCID, AT

 

*LOAD_SEGMENT_ID

Apply the distributed pressure load over one triangular or quadrilateral segment defined by four, six or eight nodes.

Pressure

LCID, AT

 

*LOAD_SHELL_ELEMENT

Apply the distributed pressure load over one shell element or shell element set.

Pressure

AT, LCIDoption

 

*LOAD_SHELL_ELEMENT_
ID

Apply the distributed pressure load over one shell element or shell element set.

Pressure

LCID, AT

 

*LOAD_SHELL_
PRESSURE

Apply the distributed pressure load over one shell element or shell element set.

Pressure

Type 2

Card 24
Pressure BC

 

*LOAD_THERMAL_
CONSTANT_NODE

Define nodal sets giving the temperature that remains constant for the duration of the calculation.

Temperature

n/a

 

*LOAD_THERMAL_
VARIABLE_NODE

Define nodal temperature that is variable during the calculation.

Temperature

TS, LCID

 

hmtoggle_arrow1MADYMO

Supported Card

Solver Description

Supported Load Types

Notes

CONSTRAINT.LINEAR

Linear constraint for FE nodes

Equation

 

EDGE

 

Force

Moment

 

ELEMENT_AC

 

Pressure

 

INITIAL.NODE_DISP

Initial nodal displacement

Constraints

 

INITIAL.NODE_VEL

Initial nodal velocity

Constraints

 

LOAD

 

 

Defined on the card of the applicable load type.

MOTION.NODE_DISP

Prescribed nodal displacement.

Constraints

Defined on the card of the referenced JOINT.

MOTION.NODE_VEL

Prescribed nodal velocity.

Constraints

 

NODE

Time dependent point loads (forces and moments) applied to nodes.

Force

Moment

 

PRES

 

Pressure

 

SUPPORT

Define which degrees of freedom of nodes are constrained, by supporting them on a rigid body or the reference space.

Constraints

 

hmtoggle_arrow1MARC

Supported Card

Solver Description

Supported Load Types

Notes

Disp_chang

 

Constraints

 

DIST_LOADS

 

Pressure

 

Fixed_Acce

 

Constraints

 

Fixed_Disp

 

Constraints

 

Fixed_Pres

 

Constraints

 

Fixed_Temperature

 

Temperature

 

FOUNDATION

 

Pressure

 

Init_Disp

 

Constraints

 

INITIAL_vel

 

Velocity

 

MOMENT

 

Moment

 

POINT_LOAD

 

Constraints

 

hmtoggle_arrow1Nastran

Supported Card

Solver Description

Supported Load Types

Notes

ASET

Defines degrees-of-freedom in the analysis set (a-set)

Constraints

 

ASET1

Defines degrees-of-freedom in the analysis set (a-set)

Constraints

 

BNDFIX1

Defines analysis set (a-set) degrees-of-freedom to be fixed (b-set) during generalized dynamic reduction or component mode synthesis calculations.

Constraints

 

BOLTFOR

 

Flux

 

BSET1

Defines analysis set (a-set) degrees-of-freedom to be fixed (b-set) during generalized dynamic reduction or component mode synthesis calculations.

Constraints

 

CSET1

Defines analysis set (a-set) degrees-of-freedom to be free (c-set) during generalized dynamic reduction or component modes calculations.

Constraints

 

DAREA

Defines scale (area) factors for static and dynamic loads. In dynamic analysis, DAREA is used in conjunction with RLOADi and TLOADi entries.

Constraints

 

DEFORM

Defines enforced axial deformation for one-dimensional elements for use in statics problems.

Flux

 

FORCE

Requests the form and type of element force output or particle velocity output in coupled fluid-structural analysis.

Force

 

MOMENT

Defines a static concentrated moment at a grid point by specifying a scale factor and a vector that determines the direction.

Moment

 

OMIT1

Defines degrees-of-freedom to be excluded (o-set) from the analysis set (a-set).

Constraints

 

PLOAD

Defines a uniform static pressure load on a triangular or quadrilateral surface comprised of surface elements and/or the faces of solid elements.

Pressure

 

PLOAD1

Defines concentrated, uniformly distributed, or linearly distributed applied loads to the CBAR or CBEAM elements at user-chosen points along the axis.

Pressure

 

PLOAD2

Defines a uniform static pressure load applied to CQUAD4, CSHEAR, or CTRIA3 two-dimensional elements.

Pressure

The THRU field is supported for feinput only.  On export, additional pressure cards for the range specified are written.

PLOAD4

Defines a pressure load on a face of a CHEXA, CPENTA, CTETRA, CTRIA3, CTRIA6, CTRIAR, CQUAD4, CQUAD8, or CQUADR element.

Pressure

The THRU field is supported for feinput only.  On export, additional pressure cards for the range specified are written.

Unequal nodal pressures are now supported.  The average pressure value is used as the magnitude of the pressure for visualization only.  The individual field values, P1-P4, can be viewed or edited using the card editor.

Updating the magnitude of pressure from the Pressures panel will have no effect on PLOAD4 cards defined using unequal nodal pressures.

QBDY1

Defines a uniform heat flux into CHBDYj elements.

Flux

 

QSET1

Defines generalized degrees-of-freedom (q-set) to be used for generalized dynamic reduction or component mode synthesis.

Constraints

 

QVOL

Volume Heat Addition - Defines a rate of volumetric heat addition in a conduction element.

Flux

 

SPC

Defines a set of single-point constraints and enforced motion (enforced displacements in static analysis and enforced displacements, velocities or acceleration in dynamic analysis).

Constraints

Constraints on nodes are supported through SPC cards. PS field in GRID card is not supported.  Upon import, any PS entry on the GRID card will be converted into an SPC card.

SPC1

Defines a set of single-point constraints.

Constraints

Supported for feinput only. On export, equivalent SPC cards are written.  Alternate format with THRU in the fifth field is supported.

SPCD

Defines an enforced displacement value for static analysis and an enforced motion value (displacement, velocity or acceleration) in dynamic analysis.

Constraints

 

SUPORT

Defines determinate reaction degrees-of-freedom in a free body.

Constraints

 

SUPORT1

Defines determinate reaction degrees-of-freedom (r-set) in a free body-analysis. SUPORT1 must be requested by the SUPORT1 Case Control command.

Constraints

 

TIC(D)

Transient Initial Condition - Defines values for the initial conditions of variables used in structural transient analysis.

Constraints

 

TIC(V)

Transient Initial Condition - Defines values for the initial conditions of variables used in structural transient analysis.

Constraints

 

TEMP

Defines temperature at grid points for determination of thermal loading, temperature-dependent material properties, or stress recovery.

Temperatures

 

TEMPBC

Defines the temperature boundary conditions for heat transfer analysis.

Temperatures

 

USET

Defines a degree-of-freedom set.

Constraints

 

USET1

Defines a degrees-of-freedom set.

Constraints

 

Note:Other loads such as SPCADD, MPCADD, FREQ, FREQ1, EIGR, EIGRL, EIGC, EIGP, EIGB, GRAV, and RFORCE are supported as load collectors.

 

hmtoggle_arrow1PAM-CRASH 2G

Supported Card

Solver Description

Supported Load Types

Notes

ACC3D /

Imposed accelerations

Acceleration

Acceleration type can be specified in the Acceleration panel.

BOUNC /

Define boundary condition

Constraints

 

CONLO /

Concentrated nodal load

Force(1)

 

DIS3D /

Imposed displacement

Constraints

 

DIS3DM /

Imposed minimum displacement

Constraints

 

DIS3DX /

Imposed maximum displacement

Constraints

 

INVEL /

Define initial velocity

Velocity

 

PREFA /

Pressure on shells

Pressure(1)

RAC3D /

Imposed rotational acceleration

Acceleration

Acceleration type can be specified in the Acceleration panel.

RAN3D /

Imposed angular rotations

Constraints

 

RDA3D /

Radial 3D boundary conditions

Acceleration

Acceleration type can be specified in the Acceleration panel.

RDD3D /

 

Constraints

 

RDV3D /

Radial 3D boundary conditions

Velocity

 

RVE3D /

Imposed rotational velocities

Velocity

 

RWALL /

Rigid wall definition

 

 

SECFO_PLANE /

 

 

 

VEL3D /

Imposed velocities

Velocity

 

hmtoggle_arrow1PERMAS

Supported Card

Solver Description

Supported Load Types

Notes

$ADDMODES

Definition of static mode shapes to be added to the set of eigenmodes used for transformation to modal space.

Constraints

If static mode shapes will be added directly to nodes or nodesets (SOURCE=INPUT), the $ADDMODES can be created through the Constraints panel.

Click sysid to specify the system regarding to which the modes shall be applied.

Use the DOFTYPE button to select an option: DISP, TEMP, PRES, POTE and MATH.

$ADDMODES

Definition of static mode shapes to be added to the set of eigenmodes used for transformation to modal space.

Pressure

If mode shapes will be applied based on the natural deformation of elements (SOURCE=INPUT) the  $ADDMODES keyword needs to be created here.

$CONLOAD

Definition of concentrated loads at nodal point degrees of freedom.

Force

 

$CONLOAD

Definition of concentrated loads at nodal point degrees of freedom.

Moment

 

$DISLOAD PRESS

Definition of pressure loads for elements, where loads are given for elements or element sets.

Pressure

Applicable to shells and solids, but also axisymmetric solid elements. Therefore please apply a pressure on an HM shell element. Face identifiers are written in this case. On import IDS ELNODES or NODES will be resolved into ELGEO (face identifiers).

$DISLOAD TEMP

Nodal temperatures defined on elements or element sets.

Pressure

 

$DISLOAD TEMPFILM

Surrounding temperatures for convective heat transfer applied on elements or element sets.

Pressure

 

$DISLOADN TEMP

Nodal temperatures definition applied on nodes or node sets

Temperature

 

$DISLOADN TEMPFILM

Surrounding temperatures for convective heat transfer applied on nodes or node sets.

Temperature

 

$INIVAL

Definition of initial values for nodal point degrees of freedom.

Constraints

For $INIVAL source parameter INPUT is currently supported to specify the initial values based on nodal points.

$INERTIA

Definition of inertia forces acting on entire component or element sets. Available are force distributions due to linear acceleration, constant or accelerated rotation and coriolis acceleration.

Pressure

Only ACCELERATION and GRAVITY are supported. This card is created in the Pressure panel. Assign to a set of elements, and the set statement displays in the card image. To create the card without a set, create a pressure on a 'dummy' element; the card will be created without a set and can be applied to the whole model.

$INERTIAX

Definition of inertia forces acting on entire axisymmetric component or element sets. Available are force distributions due to linear acceleration and constant rotation.

Pressure

Only ACCELERATION and GRAVITY are supported. This card is created in the Pressure panel. Assign to a set of elements, and the set statement displays in the card image. To create the card without a set, create a pressure on a 'dummy' element; the card will be created without a set and can be applied to the whole model.

$MPC GENERAL/$MPCVAL

Multipoint constraint definition.

Equation

Both cards are created simultaneously in the Equation panel.

The equation needs to be placed into a load collector with card image SUPRESS.

By attaching the load collector to a load step with ‘CONSTRAINTS’ attribute set, the $MPCVAL card gets written in the desired $CONSTRAINTS variant.

$PRESCRIBE/ PREVAL

Prescribed degrees of freedom/Nodal point values (implemented as HyperMesh constraints)

Constraints

 

$SUPPRESS

Suppressed degrees of freedom

Constraints

 

hmtoggle_arrow1Samcef

The following cards are supported in the Samcef interface:

Supported Cards

Solver Description

Supported Load Types

Notes

.CLM FIX

Defines a set of single-point constraints

CONSTRAINT

 

.CLM DEP

Defines sets of enforced displacements

CONSTRAINT

 

.CLM CHA COMP 123

Defines a static force at a grid point by specifying a vector and a value.

FORCE

 

.CLM FOL COMP 123

Defines a follower force at a grid point by specifying a vector and a value

FORCE

 

.CLM CHA COMP 456

Defines a static moment at a grid point by specifying a vector and a value.

MOMENT

 

.CLM FOL COMP 456

Defines a follower moment by specifying a vector and a value

MOMENT

 

.CLM PRESSURE

Defines a static pressure load on any elements type

PRESSURE

 

 

 

See Also:

Include Files

Load Collectors