HyperWorks Solvers

MBDSRF

MBDSRF

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MBDSRF

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Bulk Data Entry

MBDSRF – Multi-body Deformable Surface

Description

Defines a multi-body deformable surface.

Format

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(2)

(3)

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(7)

(8)

(9)

(10)

MBDSRF

SRFID

NROW

NCOL

ENDTYPE

NSEGU

NSEGV

 

 

 

 

G1

G2

G3

G4

G5

G6

 

 

hmtoggle_plus1Example

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

(10)

MBDSRF

1

3

6

NATURAL

100

100

 

 

 

 

201

202

203

204

205

206

207

206

 

 

209

210

211

212

213

214

215

216

 

 

217

218

 

 

 

 

 

 

 

Field

Contents

SRFID

Surface identification number.

No default (Integer > 0)

NROW

Number of rows of nodes.

NCOL

Number of columns of nodes.

ENDTYPE

Select from: NATURAL, PARABOLIC and PERIODIC. See comment 1.

Default = NATURAL

NSEGU, NSEGV

Number of segments along the U and V coordinates used to discretize the deformable surface for animation purposes.

No default (Integer > 0)

G1, G2, …

Row-wise list of nodes. The first NROW IDs form the first row; the second NROW IDs form the second row, and so on. The list must contain a total of NROW*NCOL grid IDs.

Comments

1.The deformable surface is generated using the CUBIC spline interpolation which requires assumptions on  the second derivative of the interpolating function at the end of the surface. The keywords NATURAL, PARABOLIC and PERIODIC represent assumptions defined as follows:

mbdsrf_comment_1

2.The MBDSRF element is not supported by the Force Imbalance method of static equilibrium.
3.The MBDSRF element does not possess any inherent inertia, stiffness or damping.
4.This card is represented as a set in HyperMesh.

See Also:

Bulk Data Section

Guidelines for Bulk Data Entries

Bulk Data Entries by Function

The Input File