Page 1 Introduction Failing Factors Principal or Normal Stress Stress Shear Stress Strain Principal Strain Maximum Strain Energy Energy Shear Strain Energy Page 2 Introduction Failing Factors Principal or Normal Stress Stress Shear Stress Strain Principal Strain Maximum Strain Energy Energy Shear Strain Energy Failure Criteria's • Maximum Principal Stress • Maximum Shear Stress • Maximum Principal Strain • Maximum Strain Energy Density • Maximum Distortion Energy Density Page 3 Introduction Failing Factors Principal or Normal Stress Stress Shear Stress Strain Principal Strain Maximum Strain Energy Energy Shear Strain Energy Failure Criteria's • Maximum Principal Stress • Maximum Shear Stress • Maximum Principal Strain • Maximum Strain Energy Density • Maximum Distortion Energy Density Maximum Principal Stress Theory When the maximum principal stress induced in a material under complex load condition exceeds the maximum normal strength in a simple tension test the material fails Good for brittle materials Page 4 Introduction Failing Factors Principal or Normal Stress Stress Shear Stress Strain Principal Strain Maximum Strain Energy Energy Shear Strain Energy Failure Criteria's • Maximum Principal Stress • Maximum Shear Stress • Maximum Principal Strain • Maximum Strain Energy Density • Maximum Distortion Energy Density Maximum Principal Stress Theory When the maximum principal stress induced in a material under complex load condition exceeds the maximum normal strength in a simple tension test the material fails Good for brittle materials Maximum Shear Stress Theory When the maximum shear strength in actual case exceeds maximum allowable shear stress in simple tension test the material case. Good for ductile materials Page 5 Introduction Failing Factors Principal or Normal Stress Stress Shear Stress Strain Principal Strain Maximum Strain Energy Energy Shear Strain Energy Failure Criteria's • Maximum Principal Stress • Maximum Shear Stress • Maximum Principal Strain • Maximum Strain Energy Density • Maximum Distortion Energy Density Maximum Principal Stress Theory When the maximum principal stress induced in a material under complex load condition exceeds the maximum normal strength in a simple tension test the material fails Good for brittle materials Maximum Shear Stress Theory When the maximum shear strength in actual case exceeds maximum allowable shear stress in simple tension test the material case. Good for ductile materials Maximum Principal Strain Theory When the maximum normal strain in actual case is more than maximum normal strain occurred in simple tension test case the material fails Not recommendedRead More

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