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RISElastic 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 ...