Plate top vonmises stress in fea

[chandran]

I just used nastran to do an fea analysis using plate elements of thickness 1.22 mm. Nastran gives two vonmises stress values for
plate elements
1.plate bottom von mises stress

2.plate top von mises stress

what are they?

 

[FredGarvin]

Von Mises is a failure criteria for ductile materials that one applies to stress levels they have calculated. It is not a type of stress. It's also referred to as the Max Distortion Energy criteria.

 

[ravenprp]

The plate top vonmises stress in FEA refers to the maximum stress value at the top surface of the plate element, while the plate bottom von mises stress refers to the maximum stress value at the bottom surface of the plate element. These values are important in FEA analysis as they help determine the stress distribution and potential failure points in the plate structure. By comparing the top and bottom stress values, engineers can identify areas that may require reinforcement or redesign to ensure the structural integrity of the plate. It is important to consider both top and bottom von mises stress values in FEA analysis to accurately assess the performance and safety of the plate structure.