{"id":343711,"date":"2024-01-08T21:16:53","date_gmt":"2024-01-08T21:16:53","guid":{"rendered":"\/forum\/forums\/topic\/discrepancy-between-lsprepost-and-hand-calculations-shell-element-stress-output\/"},"modified":"2024-01-08T21:19:32","modified_gmt":"2024-01-08T21:19:32","slug":"discrepancy-between-lsprepost-and-hand-calculations-shell-element-stress-output","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/discrepancy-between-lsprepost-and-hand-calculations-shell-element-stress-output\/","title":{"rendered":"Discrepancy between LSPrepost and hand calculations -Shell element stress output"},"content":{"rendered":"

Hi<\/p>\n

I perofrmed some analysis in LSDyna. Upon checking the Von Misses stresses, I found that they do not match with the value I calculated using standard von misses stress formula as below:<\/p>\n

<\/a><\/p>\n

I used fully integrated shell element (ELFORM = 16) with two integration points. I opened the elout file where I found that LSDyna wrote stress output (sigma-x, sigma-y etc) at two integration points. It basically looks like below:<\/p>\n

<\/a><\/p>\n

So, when I checked any element say element 1 and plot von misses stress variation with time in LSPREPOST. I found that it does not match with what I got using elout stress values in von Misses stress formula. <\/p>\n

Can anyone help me in this regards?<\/p>\n","protected":false},"template":"","class_list":["post-343711","topic","type-topic","status-closed","hentry","topic-tag-lsdyna"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t