ASME PTB-3 Validation – Protection Against Local Failure

In addition to demonstrating protection against plastic collapse, the analyzed components must also qualify the local failure check per section 5.3 of ASME Sec VIII Div 2. The code gives two analysis methodologies to do this.The first method is to carry out an elastic analysis and check triaxial stress limit given as 4S by eq Read more about ASME PTB-3 Validation – Protection Against Local Failure[…]

ASME PTB-3 Validation – Elastic Plastic Analysis

Elastic Plastic Analysis is a non-linear analysis. There are two main non-linearities involved here. The material model is non-linear and requires true stress strain curve as input. In contrast a linear static analysis just needs Elastic Young’s Modulus to construct the full stress strain curve. The stress-strain curve in this case is simply a line Read more about ASME PTB-3 Validation – Elastic Plastic Analysis[…]