When the load boundaries vary with time and under the dynamics loads, the mesh generator can derefinement and re-refinement dynamically mesh with moving of stress concentration region.

The stress-strain field of winder axle in various working conditions is analyzed and mechanics performance of stress concentration region is studied, which provides reference for its fatigue analysis.

The stress distribution and the stress concentration factor in the welding region of tubular TT-joints subjected to axial loads are analyzed using finite element method in this study.