The work includes four parts as following . a two - dimensional finite element model is constructed and the analysis program is complied to analyze the residual strength of damaged composite laminates under unidirectional tensile stress 建立含孔和裂纹复合材料层压板的二维有限元模型，编写有限元程序计算损伤板在单向拉伸载荷作用下的剩余强度； 2
With the aid of the obtained fundamental solutions and the continuity conditions of stress and displacement on material interface , complex potentials solutions for an bi - material infinite plate with an elliptical inclusion under pulling stress are given 根据界面上应力和位移的连续条件，得到了单向拉伸状态下，含有椭圆夹杂的无限大双材料组合板的复势解。
Abstract : by analyzing strain softening micromechanical damage process of rock , the softening micromechanical damage model of rock is established and the softening constitutive relation of rock under one _ dimension tension is also obtained 文摘:通过分析岩石材料应变软化的细观损伤力学过程，建立了岩石软化阶段的细观损伤力学模型，从而得到单向拉伸状态下岩石软化过程的应力应变本构关系
Taking concrete ' s isotropic elastic damage as example , this article puts forward a new thought of establishing the damage developing equation on the basis of the principle of minimum dissipation of energy , and infers the concrete ' s damage developing equation under uniaxial extension 摘要以混凝土的各向同性弹性损伤为例，提出了一种基于最小耗能原理建立损伤演变方程的新思路，并推导得到了混凝土在单向拉伸下的损伤演变方程。
In this paper , the residual strength of damaged composite laminates and their repaired structures under unidirectional tensile stress is calculated . the influence of the repair parameters , such as the diameter of the circle patch , the length and the width of the rectangle patch , the thickness of the patch , the stacking sequence is discussed 本文对含损伤复合材料层压板及其修补结构在单向拉伸载荷作用下的剩余强度进行了计算，同时对补片参数对修补效果的影响做了一些研究和探讨，主要做了以下几个方面的工作： 1
Based on the zero eigenvalue solutions and non - zero eigenvalue solutions of the problem of viscoelastic cylinders , as particular example , kelvin model ' s creep and maxwell model ' s stress relaxation are studied for the simple extension . the numerical results show that the model is reasonable , which is in agreement with viscoelastic characteristics 在得到粘弹性柱体问题的零本征值和非零本征值解析解的基础上，作为特例讨论了粘弹性柱体单向拉伸问题的kelvin模型的蠕变现象以及maxwell模型的应力松弛现象。
Afterward the numerical method was used to decompose the inherited integration , so the matrix form of constitution equations was derived . then through utilizing the lagrange equation directly , the paper gets the finite element formula . to test the model , the paper calculate the osteoblast ' s dynamic response under near static load and sinusoidal load at a simple tension beam and a four point bending beam 针对单向拉伸和四点弯曲两种离体培养成骨细胞的装置，再根据实际情况，将培养基看成是一种多孔材料，而将成骨细胞看成是粘弹性体，利用自编的有限元分析程序分别计算了受拟静态载荷和受交变载荷下细胞的动力响应，结果很好地反映了细胞的粘弹性性质。
