用实体单元节点加速度代表结构单元节点的有什么问题？？
看了论坛很多帖子，仍然没人能很好的解决这个问题。实体单元用hist gp zacc x y z就可以，结构单元节点难道没有类似的命令可以实现类似的目的吗？
还有就是如果我用实体单元的acc来表示同坐标的结构单元，是不是可行呢？理论上说结构单元（非可与实体分离的衬砌等单元）与实体单元紧贴，动力响应速度V应该一致，那么相同的V对时间求导得出的加速度也应该一致，所以用紧贴的实体单元加速度代表结构单元节点处的加速度是可行的，我这么理解有问题吗
竟然搜到自己的老贴，顶一下吧 For 2D FLAC, yes, as long as the structure node is connected to the soil grid directly.
For 3D FLAC, yes --- if you just need an approximate value and no --- if you need the exact value. The reason is the structure node is connected to solid elements via link therefore the structure node's velocity was "averaged" based on all grid points on that solid element through some kind of weighing function. trackbed 发表于 2013-8-18 04:11 static/image/common/back.gif
For 2D FLAC, yes, as long as the structure node is connected to the soil grid directly.
For 3D FLAC, ...
你知道如何提取结构单元特定节点的加速度吗，如果可以提取的话麻烦把语句写出，谢谢
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