弹塑性分析的面向对象有限元方法

把面对象有限元程度设计方法应用到非线性静态分析唑线性面向对象有限元分析环境出发，对已有的类进行扩充，利用Ｎｅｗｔｏｎ－Ｒａｐｂｓｏｎ算法实现了弹塑性分析，进一步论证了面向对象有限元程序设计的优越性。     

面向对象有限元程序几种新的数据类型

本文采用Ｂｏｒｌａｎｄ Ｃ＋＋定义了有限元程序几种新的数据类型，并对一系列Ｃ＋＋操作符进行了重载。使用这些数据类型，不仅可以简化面向对象有限元程序的书写，而且可以更有效地实施内存动态管理。     

一种自动划分三维有限元网格的新方法

提出了一种自动划分三维有限元网格的新方法，与其他方法相比，具有更高效和更灵活的特点。另外，还以Ｂｏｒｌａｎｄ Ｃ＋＋为全，介绍了该方法的面向对象程序实施。     

Reproducing Kernel Particle Method for Non-Linear Fracture Analysis

To study the non-linear fracture, a non-linear constitutive model for piezoelectric ceramics was proposed, in which the polarization switching and saturation were taken into account. Based on the model, the non-linear fracture analysis was implemented using reproducing kernel particle method （RKPM）. Using local J-integral as a fracture criterion, a relation curve of fracture loads against electric fields was obtained. Qualitatively, the curve is in agreement with the experimental observations reported in literature. The reproducing equation, the shape function of RKPM, and the transformation method to impose essential boundary conditions for meshless methods were also introduced. The computation was implemented using object-oriented programming method.