【摘要】 纤维增强树脂基复合材料是一类高比强度、高比刚度的结构材料。开展该材料的裂纹与强度关系研究具有重要的科学意义和工程价值。采用细观力学模型和有限元方法,分析Ⅰ型裂纹长度和裂尖位置对复合材料应力状态和应力强度因子的影响,进而获得启裂载荷与裂纹长度和裂尖位置的关系。更多还原

【Abstract】 The fiber reinforced resin matrix composites are a kind of structural material with high specific strength and high specific rigidity.It is very important for engineering application and material design to investigate the relationship between the crack and strength of composites.Based on a mesoscopic-mechanical model,the influences of the length and crack tip position of mode I crack on the stress distribution and stress intensity factor are analyzed by means of the finite element method,and then the relationship among the crack initiation load,crack length and crack tip position is obtained.更多还原