ASME PTB-3 Validation – Fatigue Analysis

Equipments when subjected to cyclic loads may fail due to fatigue. As an illustration consider an example of a wire being bent back and forth until the plastic deformations grow so that it ruptures. In ASME fatigue analysis typically the cyclic loads are pressure and/or temperature. Here an ASME PTB-3 Validation for “Example E5.5.3 – Elastic Stress Read more about ASME PTB-3 Validation – Fatigue Analysis[…]

ASME PTB-3 Validation – Limit Load Analysis

Limit Load analysis are non linear in nature and may require significantly more computation time and resource than a linear elastic analysis. As such a linear elastic analysis is always a recommended first step. It helps to ensure the FEA problem is correctly setup i.e. there are no rigid body motions, deformations and far field Read more about ASME PTB-3 Validation – Limit Load Analysis[…]

ASME PTB-3 Validation – Elastic Stress Analysis

I carried out ASME PTB-3 Validation for “Example E5.2.1 – Elastic Stress Analysis” to check for protection against plastic collapse per ASME Sec VIII Div 2 using ANSYS. Here’s a summary. Problem Statement: Evaluate the vessel top head and shell region for compliance with respect to the elastic stress analysis criteria for plastic collapse provided Read more about ASME PTB-3 Validation – Elastic Stress Analysis[…]