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小弟做了一个冲击荷载的模拟,提取一点的加速度响应,想把时程曲线的时间坐标最小刻度调为0.001,程序默认的是0.4左右,请教FREQ该怎么设置呢,有4个荷载步
具体程序如下
! L=0.6
! b=0.05
! h=0.006
!1.创建模型
FINISH/CLEAR/PREP7
ET,1,BEAM3
MP,EX,1,2.1E11
MP,PRXY,1,0.3
MP,DENS,1,7850
R,1,0.0003,9.0E-10,0.006
K,1
K,2,0.6
L,1,2
LESIZE,ALL, , ,12
LMESH,ALL
DK,1,ALL
FINISH
!2.瞬态分析
/SOLUANTYPE,TRANSTRNOPT,FULLOUTRES,ALL,ALLALPHAD,0.4436!第一荷载步TIMINT,OFFTIME,1F,2,FY,0LSWRITE,1!第二荷载步TIMINT,ONAUTOTS,ONDELTIM,0.0001TIME,1.0005KBC,0F,2,FY,−1000LSWRITE,2!第三荷载步TIME,1.001KBC,0F,2,FY,0LSWRITE,3!第四个荷载步TIMINT,OFFTIME,3F,2,FY,0LSWRITE,4!求解LSSOLVE,1,4FINISH!3.时程后处理/POST26!绘制加速度传感器处的位移时程曲线NSOL,2,5,U,Y/GRID,1PLVAR,2
DERIV,3,2,1, ,VCENDERIV,4,3,1,,ACENPLVAR,3PLVAR,4
!4.通用后处理
/POST1SET,LISTPLDISP
ANTIME,30,0.5, ,1,2,0,6 |