Plate top vonmises stress in fea

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    Fea Plate Stress
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SUMMARY

The discussion focuses on the use of Nastran for Finite Element Analysis (FEA) involving plate elements with a thickness of 1.22 mm. It clarifies that Nastran provides two distinct von Mises stress values: the plate bottom von Mises stress and the plate top von Mises stress. Von Mises stress is defined as a failure criterion for ductile materials, specifically the Max Distortion Energy criterion, rather than a type of stress itself.

PREREQUISITES
  • Understanding of Finite Element Analysis (FEA)
  • Familiarity with Nastran software
  • Knowledge of von Mises stress and its applications
  • Basic concepts of material failure criteria
NEXT STEPS
  • Research the implementation of von Mises stress in Nastran
  • Explore the differences between plate bottom and plate top von Mises stress
  • Learn about the Max Distortion Energy criterion in material science
  • Investigate advanced FEA techniques for analyzing ductile materials
USEFUL FOR

Engineers and analysts involved in structural analysis, particularly those using Nastran for FEA, as well as material scientists focusing on ductile material failure criteria.

chandran
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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?
 
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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.
 

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