Abstract
本文对纤维增强复合材料桥联增韧进行了详细的断裂力学分析, 基于Castigliano's 定理和界面剪滞模型, 得到了含界丰效应的复合材料桥联增专访和裂纹线开位移的控制议程; 并按照第二类Fredholm 积分方程的迭代解法, 给出其数值结果, 为例题于分析界面相参数对增韧效果的影响, 寻求了该控制方程的近似解解析表达式, 对近似解进行了误差估计, 证明了解的可行性, 在此基础上得到了界面剪切模量, 裂纹长度. 界面厚度,
In this paper, the fracture mechanics analysis of fiber-reinforced composites is carried out in detail. Based on the Castigliano's theorem and the Shear-lag model, the governing equations for the toughening and crack propagation of the composites with interfacial phase effect were obtained. According to the iterative method of Fredholm integral equation of the second kind, Given its numerical results. In order to analyze the influence of phase parameters on the toughening effect, the analytical solution of the approximate solution of the control equation is obtained, and the error of approximate solution is estimated, which proves the feasibility of the solution. On this basis, the effects of interface shear modulus, crack length, interface thickness, fiber radius, volume fraction and material properties on the toughening effect of the interface-containing composites were obtained.
In this paper, the fracture mechanics analysis of fiber-reinforced composites is carried out in detail. Based on the Castigliano's theorem and the Shear-lag model, the governing equations for the toughening and crack propagation of the composites with interfacial phase effect were obtained. According to the iterative method of Fredholm integral equation of the second kind, Given its numerical results. In order to analyze the influence of phase parameters on the toughening effect, the analytical solution of the approximate solution of the control equation is obtained, and the error of approximate solution is estimated, which proves the feasibility of the solution. On this basis, the effects of interface shear modulus, crack length, interface thickness, fiber radius, volume fraction and material properties on the toughening effect of the interface-containing composites were obtained.
| Translated title of the contribution | Bridging mechanism analysis of the fiber reinforced composite containing an elastic interfacial layer |
|---|---|
| Original language | Chinese |
| Pages (from-to) | 1-11 |
| Number of pages | 11 |
| Journal | Guti Lixue Xuebao |
| Volume | 15 |
| Issue number | 1 |
| Publication status | Published - 1994 |
Keywords
- Composite
- Bridge-toughening
- Interphase
- Shear-lag
- Approximate solution