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RISEnergy Conservation Error Due to Use of Green–Naghdi Objective Stress Rate in Commercial Finite Element Codes and Its Compensation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The objective stress rates used in most commercial finite element programs are the Jaumann rate of Kirchhoff stress, Jaumann rates of Cauchy stress, or Green–Naghdi rate. The last two were long ago shown not to be ...
Elastic Soft Core Sandwich Plates: Critical Loads and Energy Errors in Commercial Codes Due to Choice of Objective Stress Rate
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Most commercial finite element codes, such as ABAQUS, LSDYNA, ANSYS and NASTRAN, use as the objective stress rate the Jaumann rate of Cauchy (or true) stress, which has two flaws: It does not conserve energy since it is ...