梁单元扭转,最大不能超过一圈
最近做了一个非常简单的例子,就是模拟一根钢丝的扭转,采用梁单元来模拟钢丝,不论是采用位移扭转自由度加载还是采用扭矩加载,最大只能到一圈,超过了就开始下降。Abaqus/Standard 3DEXPERIENCE R2018x DATE 24-Jan-2019 TIME 14:37:09
SUMMARY OF JOB INFORMATION:
MONITOR NODE: 2INSTANCE: PART-1-1 DOF:4
STEPINC ATT SEVERE EQUIL TOTALTOTAL STEP INC OF DOF IF
DISCON ITERS ITERSTIME/ TIME/LPF TIME/LPF MONITOR RIKS
ITERS FREQ
1 1 1 0 1 10.0100 0.0100 0.01000 0.100
1 2 1 0 1 10.0200 0.0200 0.01000 0.200
1 3 1 0 1 10.0350 0.0350 0.01500 0.350
1 4 1 0 1 10.0575 0.0575 0.02250 0.575
1 5 1 0 1 10.0912 0.0912 0.03375 0.912
1 6 1 0 1 10.142 0.142 0.05063 1.42
1 7 1 0 1 10.218 0.218 0.07594 2.18
1 8 1 0 1 10.318 0.318 0.1000 3.18
1 9 1 0 1 10.418 0.418 0.1000 4.18
1 10 1 0 1 10.518 0.518 0.1000 5.18
1 11 1 0 1 10.618 0.618 0.1000 6.18
1 12 1 0 1 10.718 0.718 0.1000 0.895
1 13 1 0 1 10.818 0.818 0.1000 1.89
1 14 1 0 1 10.918 0.918 0.1000 2.89
1 15 1 0 1 11.00 1.00 0.08219 3.72
THE ANALYSIS HAS COMPLETED SUCCESSFULLY
我尝试了,在施加扭转的端,把节点坐标系转到局部坐标系下,还是一样:Q 采用3d实体单元,施加扭转段couple到一个点,可以正确的扭转到超过一圈。
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