SSTATE

SSTATE, Action, CM_Name, Val1, Val2, Val3, Val4, Val5, Val6, Val7, Val8, Val9
Defines a steady-state rolling analysis.

PREP7: Special Purpose
Compatible Products: – | – | – | Enterprise | Ent PP | Ent Solver | –

Action

Action to perform for defining or manipulating steady-state rolling analysis data:

DEFINE

 — 

Define steady-state rolling analysis data

LIST

 — 

List current steady-state rolling analysis data

DELETE

 — 

Delete steady-state rolling analysis data

CM_Name

Element component name

VAL1, ..., VAL9

Input values (based on the Action type)

Notes

The SSTATE command specifies steady-state rolling analysis parameters for the given element component. The program runs the steady-state rolling analysis if the corresponding element key option is enabled for that element component.

The command supports the following elements:

Supported ElementDescription

SOLID185

3-D 8-Node Structural Solid

SOLID186

3-D 20-Node Structural Solid

SOLID187

3-D 10-Node Tetrahedral Structural Solid

SOLSH190

3-D 8-Node Structural Solid Shell

Degenerated shape (prism) option not supported.

SOLID285

3-D 4-Node Tetrahedral Structural Solid with Nodal Pressures

For information about steady-state rolling for rebar and solid elements, see Steady State Rolling in the Mechanical APDL Theory Reference.

Command Specification for Action = DEFINE

The following data types can be defined:

  • SPIN -- Spinning motion

  • TRANSLATE -- Rigid body motion (velocity) that the spinning component is undergoing

Define the steady-state spinning motion:

SSTATE, DEFINE, CM_Name, SPIN, OMEGA, Method, Val4, Val5, Val6, Val7, Val8, Val9

OMEGA

Spin velocity

Method

Method to use for defining the spin axis:

POINTS --

Define the spin axis using two points:

Val4, Val5, Val6 -- Coordinates of the first point

Val7, Val8, Val9 -- Coordinates of the second point

This definition method is currently the only option.

Example 10:  Defining Steady State Spinning Motion

This command defines a steady state spinning motion of 120 rad/s around the spin axis:

SSTATE,DEFINE,CM_Name,SPIN,120,POINTS,0,0,0,0,1,0

In this case, two points with coordinates (0,0,0) and (0,1,0) define the spin axis in the global Y direction.


Define the rigid body motion (velocity):

SSTATE, DEFINE, CM_Name, TRANSLATE, Val2, Val3, Val4

Val2, Val3, Val4 -- Rigid body velocity components

Command Specification for Action = LIST

SSTATE, LIST, CM_Name

Lists all steady-state rolling analysis data defined on the specified element component. All data is listed if no component (CM_Name) is specified.

Command Specification for Action = DELETE

SSTATE, DELETE, CM_Name

Deletes all steady-state rolling analysis data defined on the specified element component. All data is deleted if no component (CM_Name) is specified.

Menu Paths

This command cannot be accessed from a menu.

Release 18.2 - © ANSYS, Inc. All rights reserved.