Elastoplastic Low-Cycle Fatigue Analysis of Cylinder with Hole

Structural component subjected to cyclic loading experiences localized plasticity, requiring full elastoplastic simulation. Stable load cycle achieved after simulating two cycles, with fatigue prediction based on Smith-Watson-Topper model for low-cycle fatigue evaluation.

• Elastoplastic Analysis
• Low-Cycle Fatigue
• Cylinder with Hole
• Structural Component
• Smith-Watson-Topper

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Uploaded on Sep 18, 2024 | 0 Views

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1. Elastoplastic Low-Cycle Fatigue Analysis of a Cylinder with a Hole

2. Model Background A structural component is subjected to multi-axial cyclic loading. The stresses are above yield limit and localized plasticity occurs. A full elastoplastic simulation of the load cycle is made. The structural behavior is simulated using a plasticity model from the Nonlinear Structural Materials Module. Fatigue is based on the stress-based Smith- Watson-Topper model.

3. Stable Load Cycle A full elastoplastic analysis is time consuming. Two load cycles are simulated in order to obtain a stable load cycle. The structural response of these two differs. For each consecutive load cycle the stress strain response is the same. The second load cycle is therefore said to be stable and is used in fatigue evaluation.

4. Fatigue Prediction The strain-based models are suitable for low- cycle fatigue. Fatigue is evaluated with the Smith-Watson- Topper model.