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mattyboson12
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If the von mises stress well is below the yield stress, am I right to assure the material is behaving elastically?
mattyboson12 said:If the von mises stress well is below the yield stress, am I right to assure the material is behaving elastically?
Von Mises stress is a measure of the amount of stress a material can withstand before it undergoes plastic deformation. It is calculated by taking a combination of the normal and shear stresses on a material and converting them into an equivalent stress value using the Von Mises yield criterion formula.
Yield stress is the amount of stress at which a material begins to undergo plastic deformation. Von Mises stress is used to determine the yield stress of a material, as it takes into account both normal and shear stresses, which can contribute to plastic deformation.
The Von Mises stress of a material can be affected by various factors such as the material's Young's modulus (a measure of the material's stiffness), the magnitude and direction of the applied stress, and the material's yield strength.
Yes, the Von Mises stress can exceed the yield stress of a material. However, this does not necessarily mean that the material will undergo plastic deformation. The yield stress is simply a threshold at which the material may begin to deform plastically, but it is possible for the material to withstand higher levels of stress without undergoing plastic deformation.
No, Von Mises stress is not a reliable indicator of a material's failure. It only takes into account the onset of plastic deformation, but there are other failure modes that can occur in a material, such as fracture or fatigue, which are not captured by Von Mises stress. Therefore, it is important to consider other factors in addition to Von Mises stress when analyzing a material's failure potential.