基于有限元方法的韧性材料动态损伤演化及断裂起始预测

Key Points

• The aim is to analyze the dynamic damage and fracture behavior of tough materials under dynamic loads using a numerical method.
• Introduced a semi-explicit numerical algorithm within the explicit dynamic framework.
• Implemented local implicit contact handling to optimize computational efficiency and stability.
• Utilized a rotational neutral and objective stress update algorithm for accommodating large deformations.
• Validated the approach with examples of uniaxial stretching and transverse impact tests of beams.
• The proposed method successfully simulates the dynamic damage and failure processes of tough materials.
• Numerical examples demonstrated stability and effectiveness in analyzing the materials' behaviors under dynamic loading conditions.

Abstract