Bolt self-loosening is a slow phenomenon. Simulating the entire process with detailed thread information and load history is often computationally not feasible. With simplified bolt thread model and scaled wear analysis, the self-loosening modeling can be accelerated and the process simulated in fewer simulation cycles. This example problem demonstrates how to speed-up the self-loosening simulation process using the simplified bolt thread model and scaled fretting wear analysis.
The following features and capabilities are highlighted:
Factors influencing bolt self-loosening: local dynamics, plasticity and fretting wear.
Bolt self-loosening characteristic curve for different excitation conditions.
Contribution of fretting wear model for continual self-loosening.