Calculation of Elasto-Plastic Notch Tip Strains and Stresses Under Non-Proportional Multiaxial Loading
Economic considerations dictate that many engineering components be designed such that their strength to weight ratio is high. This implies that although the nominal stresses should remain elastic, the stresses in the vicinity of critical component locations may exceed the yield limit of the material. Simplified analytical models use the notch tip stresses and strains predicted by linear elastic theory to approximate the actual elastic-plastic strains and stresses. Using the simplified models, the complete elastic-plastic notch tip stress-strain field can be approximated knowing the notch geometry, the applied load, and the material constitutive model.
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