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ACCEL1

ACCEL1

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ACCEL1

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Bulk Data Entry

ACCEL1– Acceleration Load at Specific GRID Points

Description

The ACCEL1 Bulk Data Entry can be used to define static acceleration loads at specific GRID points in the model.

Format

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

(10)

ACCEL1

SID

CID

A

N1

N2

N3

 

 

 

 

GID1

GID2

...

 

 

 

 

 

 

hmtoggle_plus1Example

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

(10)

ACCEL1

100

0

2.0

2.0

1.0

3.0

 

 

 

 

2

4

6

8

THRU

30

BY

2

 

 

1200

THRU

1300

 

 

 

 

 

 

Field

Contents

SID

Acceleration load set identification number.

(Integer > 0)

CID

Coordinate system identification number.

= 0: references the basic coordinate system

Default = 0 (Integer > 0, or blank)

A

Scale factor for the acceleration load vector

(Real)

N1,N2,N3

Acceleration load vector components in the coordinate system CID.

(Real, a minimum of one Ni should not be set to 0.0)

GIDi

Grid point identification numbers at which the acceleration load is applied. The THRU and BY keywords can also be used to specify grids (see example).

(Integer > 0)

Comments

1.The acceleration load applied to referenced grid points in the model is given by:

Where, a is the acceleration load and N is a vector with components N1, N2, and N3.

2.The acceleration loads specified in the ACCEL1 entry can be combined with other loads, such as FORCE, MOMENT, GRAV, ACCEL, and ACCEL2, through the LOAD Subcase Information Entry. The SID on the ACCEL entry should be unique with regard to any other load entry.
3.The acceleration load does not include effects, due to mass on SPOINTs.
4.This card is represented as a force load in HyperMesh.

See Also:

Bulk Data Section

Guidelines for Bulk Data Entries

The Input File