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一个悬臂梁,采用不同的β角,居然算出来的内力不一样
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江安
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Mar 24, 2008, 10:42:07 AM
3/24/08
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忍 22:17:23
一个悬臂梁,采用不同的β角,居然算出来的内力不一样
忍 22:17:28
这是为什么
忍 22:17:42
midas算出来也是一样,
碳纤维 22:18:03
内力是局部方向
忍 22:19:11
局部方向?也就是说给出的内力绕着单元局部坐标系的?
碳纤维 22:19:20
是
碳纤维 22:23:01
看弯矩,可以看到beta为0是,局部与整体,1节点处的弯矩为-121.875
忍 22:23:14
嗯
忍 22:23:16
对
忍 22:23:38
如果β变为45度,那弯矩就变为86.18
碳纤维 22:23:38
beta为45时,局部为86.179,整体为-121.875
碳纤维 22:23:50
二者比例正好为0.707
碳纤维 22:24:09
是不是sqrt(2) / 2?
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