FINISH
/POST26
/OUT
/com -------------------------------------------------------------------------
/com | The deflections in y direction of nozzle top from continuous solution|
/com -------------------------------------------------------------------------
/OUT,scratch
NSOL,2,453,U,Y,Etype181
/OUT
PRVAR,2
FINISH
/post1
presol,epcr,comp
finish4.6.6. Example: Initial Plastic Strain Problem Using the INISTATE with State Variables
This initial state example shows how you can use initial state data (as state variables) from one analysis,
then continue the problem in a subsequent analysis.
To continue an isotropic hardening plasticity analysis, plastic strain, accumulated equivalent plastic
strain, and stress are needed. In this problem, the accumulated equivalent plastic strain is saved from
the UserMat routine as state variables, which are then used as initial-state data for the initial accumu-
lated equivalent plastic strain applied in the subsequent analysis.
Analysis 1: Adisplacement of ux = 0.3 is applied in load step 1, unloaded to ux = 0.2 in
load step 2, and an additional displacement of ux = 0.2 is applied in load step 3. Initial
state data is generat ed at the end of load step 2. Plastic strain, stress and accumulated
equivalent plastic strain are saved in the .ist file.Analysis 2:The initial state data generat ed previously is used as the starting point. An
additional displacement of 0.2--the difference between the displacement in load step 3
and load step 2 in the prior analysis--is applied in load step 2 in this analysis.The two analyses generat e the same results, validating the use of initial state with state
variables./filname,tutor-bag06s
/prep7
et,1,185
keyopt,1,3,1
! Define
tb,user,1,2,4
tbdata,1,19e5, 0.3, 1e4,2000,! E, posn, sigy, H
tb,state,mat2,,10
tbdata,1,0.0,0.0,0.0,0.0,0.0,0.0! initialize state variables
tbdata,7,0.0! initialize state variables
type,1
real,1
mat,1
sectype,1,shell
secdata, 0.125, 1, 0.0,1
secdata, 0.125, 1, 30.0,1
secdata, 0.125, 1, 60.0,1
secdata, 0.125, 1, 90.0,1Release 15.0 - © SAS IP, Inc. All rights reserved. - Contains proprietary and confidential informationExample Problems Using Initial State