Plate top vonmises stress in fea

In summary, Plate Top VonMises stress in FEA is a method used in structural engineering to analyze the behavior of structures under different loads. It is calculated using the VonMises stress formula, which takes into account the three principal stresses and their orientations. This stress is important in FEA because it helps identify potential failure points in a structure and is affected by factors such as material properties, geometry, loading conditions, and boundary conditions. To reduce Plate Top VonMises stress in FEA, engineers can optimize the design, change material properties, adjust loading and boundary conditions, and introduce structural supports or reinforcements.
  • #1
chandran
139
1
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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  • #2
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.
 
  • #3


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.
 

Related to Plate top vonmises stress in fea

1. What is Plate Top VonMises stress in FEA?

Plate Top VonMises stress in FEA (Finite Element Analysis) is a method used in structural engineering to analyze the behavior of structures under different loads. It calculates the maximum stress experienced by a plate or shell structure, taking into account both the normal and shear stresses.

2. How is Plate Top VonMises stress calculated?

The Plate Top VonMises stress is calculated using the VonMises stress formula, which takes into account the three principal stresses (σ1, σ2, and σ3) and their orientations. It is expressed as the square root of the sum of the squared differences between the principal stresses and the yield stress.

3. Why is Plate Top VonMises stress important in FEA?

The Plate Top VonMises stress is important in FEA because it helps engineers determine the potential failure points in a structure. By analyzing the stress distribution, engineers can identify areas of high stress that may need reinforcement or redesign to ensure the structural integrity of the system.

4. What factors affect Plate Top VonMises stress in FEA?

The Plate Top VonMises stress in FEA is affected by various factors such as the material properties, geometry, loading conditions, and boundary conditions. These factors can influence the stress distribution and ultimately affect the overall performance and safety of the structure.

5. How can Plate Top VonMises stress be reduced in FEA?

There are several ways to reduce Plate Top VonMises stress in FEA, including optimizing the design, changing the material properties, and adjusting the loading and boundary conditions. Additionally, introducing structural supports or reinforcements can help distribute the stress more evenly and reduce the overall stress levels.

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