不同界面结合强度条件下金属基复合材料拉伸断裂行为分析

基金项目: 国家自然科学基金59001444

ANALYSIS OF TENSILE FRACTURE BEHAVIOR FOR METAL-MATRIX COMPOSITE UNDER DIFFERENT INTERFACIAL BONDING CONDITIONS

摘要

摘要: 在改进已验证的金属基复合材料拉伸断裂过程微机模拟程序的基础上,模拟研究了界面结合强度对该材料断裂行为的影响。结果指出,在不同的基体强度水平下,材料断裂形式随着界面结合增强均经历由累积型向非累积型的过渡,且断裂强度随之提高。这一变化趋势随着纤维强度分布范围变宽而加剧。
- 长纤维增强型 /
- 金属基 /
- 拉伸断裂 /
- 界面结合 /
- 计算机模拟
Abstract: Computer-simulation technique was used in the present study to probe the effect of interfacial bonding strength on the tensile fracture behavior of a metal-matrix composite by improving the as-verified computer program simulating the fracture process of the composite.The results show that,under various matrix strength levels,there exists an identical transition in the fracture mode of the composite from the cumulative to the non-cumulative and an increase in the fracture strength,as the interfacial bond strengthen.This trend becomes more sensitive when the strength distribution of the fibre turns wide.
- unidirectional filament /
- metal-matrix /
- tensile fracture /
- interfacial bond /
- computer simulation