Reply To: Midside node stress result averaging

[Theo Camilleri]

Hi Aniket, not sure why it's blank but here's my question:

I have a structural model with SOLID186 elements. When I probe the nodal averaged stress at 2 adjacent corner nodes, the corner node stress results are 70 MPa & 53 MPa, while the midside node between them is probed at 60 MPa. From the theory manual, the midside node should be an average of the averaged corner node results, so in this case, 61.5 MPa. Why is there a difference between the result reported by Mechanical and the process shown in the theory manual?

Thanks,