!Element definitions
TYPE,1
MAT,1
REAL,1
SECNUM,1
EN,1,1,2FINISHA.2.1. Sequentially Applied Rotations
The following input illustrat es compound rotations imposed over multiple load steps with each com-
ponent applied sequentially on top of the previous deformed configuration.
Example 1: Sequentially Applied Rotations
/prep7
!parameters
pi=3.1415926536
!element type definitions
et,1,188 !beam element!node definitions
n,1,0.,0.,0.
n,2,0.,0.,0.6
!material properties
mp,ex,1,2.01e11 !young's modulus for steel
mp,nuxy,1,0.3 !poisson's ratio
!section properties
sectype,1,beam,rect
secdata,0.1,0.2 !beam cross-section
!element definitions
type,1
mat,1
real,1
secnum,1
en,1,1,2
finish
/solu !solution
nlgeom,on !geometrically nonlinear analysis
!boundary conditions for load step 1
d,1,ux,0.0 !displacement at node 1 fixed in x-direction
d,1,uy,0.0 !displacement at node 1 fixed in x-direction
d,1,uz,0.0 !displacement at node 1 fixed in x-direction
d,1,rotx,-pi/6.0 !60° clockwise rotation at node 1 about x-direction
d,1,roty,0.0 !rotation at node 1 fixed about y-direction
d,1,rotz,0.0 !rotation at node 1 fixed about z-direction
time,1.0 !time at the end of load step 1
nsub,10,100,10 !initial, maximum and minimum number of substeps
outres,all,all !save results
solve !solve load step 1
!boundary conditions for load step 2
!60° clockwise rotation at node 1 about x-axis (from load step 1)
d,1,rotx,-pi/6.0
!y-component of 90° counterclockwise rotation at node 1 about local z-axis
d,1,roty,(pi/2.0)*sin(pi/6.0)
!z-component of 90° counterclockwise rotation at node 1 about local z-axis
d,1,rotz,(pi/2.0)*cos(pi/6.0)
time,2.0! time at the end of load step 2
nsub,10,100,10
outres,all,allRelease 15.0 - © SAS IP, Inc. All rights reserved. - Contains proprietary and confidential informationExample Analyses with Multiple Imposed Rotations