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[…]

Shell Elements for Pressure Vessel Design

While solid elements are robust for local stress computations and require much less care in analysis setup, the problem size (number of elements and nodes) blows up pretty quickly if the extent of modelling is increased (Say modelling a local shell to nozzle region vs modelling entire shell with nozzle). This is where shell elements Read more about Shell Elements for Pressure Vessel Design[…]