ansys结果后处理看哪个结果(节点还是单元)

jianpan10010

ansys结果后处理看哪个结果，是看节点应力(Nodal)还是单元应力(Element),看节点应力的时候会出现AVG(表示应力平均了)，看单元应力的时候出现NOAVG(表示应力没有平均)，不要说要针对什么工况来看，对于大部分情况来说，大侠们说说看哪个？据我从网上查到的结果是看单元应力，我在想是不是要看单元的平均应力。附上一段解释：

• The stresses should approach one another as the element size gets smaller (as Steven indicated) - so it can be used as a convergence criterion (along with plotting the error estimate). Beware however, of parts that connect and viewing stress results at the connection boundary - you'll normally want to uncheck the option "average stress across element boundaries", when plotting stress. Some analysts take the point of view that element stresses are the best way to assess the answer from FEA, since it's "pure", and represents the true element stress, rather than extrapolating Gauss point stresses to the nodes, then averaging the stresses from each element at that node (in effect, polluting the answer). However, the nodal stress plots certainly look pretty. We use element stress plots for convergence assessments; then use nodal stress plots as "wow" factor for audiences.
  
  
  
  
  
  
  
  

jianpan10010

顶个，大神来啊

568336564

同问，楼主解决，就回复

htbbzzg

一般应该看节点应力 (平均的)；如果你想看单元应力，应该看单元中心处的应力。

lscookie

有限元的求解直接得到的是单元高斯点上的解  然后对单元形函数插值得到单元内各部位的解，进而得到单元对应的节点解，对于相邻单元有共有节点，所以再对单元的节点解进行平均即应力磨平，得到平均后的节点解，所以单元高斯点上的解是精确解，节点解是平均化后的解