复合材料压力容器基体开裂损伤的研究  

Study on Matrix Crack of Composite Pressure Tank

作　　者：张晓兵[1] 魏喜龙[1] 宋凌云 马国峰[1] 

机构地区：[1]哈尔滨玻璃钢研究院,哈尔滨150036 [2]二炮驻哈尔滨地区军事代表室,哈尔滨150001

出　　处：《纤维复合材料》2008年第1期7-10,共4页Fiber Composites

摘　　要：复合材料压力容器损伤破坏的主要形式之一是基体开裂,本文利用损伤力学方法中的细观力学对复合材料压力容器进行分析,采用等效夹杂法分析基体中任一点的应力情况,当应力达到临界值时基体开始产生裂纹,描述了基体开裂损伤的演化过程,建立裂纹密度和压力容器弹性模量之间的关系式,表现基体裂纹对压力容器刚度的影响。用压力容器的弹性模量定义损伤变量,进而建立了弹性模量和载荷循环次数之间的关系式。Matrix crack is one of the primary damages for composite pressure tank. This paper analyzes pressure tank with micromechanics in damage mechanical methods. Stress at any point of matrix is analyzed by the equivalent mixture when the stress reaches the critical value, and matrix begins to crack , and evolution of matrix crack is described. The relative formulas between crack density and elastic modulus shows the effect of crack on rigidity of pressure tank. Elastic modulus of pressure tank defines damage variables, and the relations between elastic modulus and load cycles are constructed.

关 键 词：复合材料压力容器 等效夹杂法 基体开裂 损伤 

分 类 号：TH49[机械工程—机械制造及自动化]