摘要
虚边界元法作为一种较新的数值计算方法,具有数据准备少,计算精度高等特点,并且克服了边界元直接法中的奇异积分问题。较早期的虚边界元研究工作大多体现于单域问题上;之后,虚边界元法处理多域问题的思想已逐渐研究成熟,且可望得到更广泛的工程应用。将多域组合问题虚边界元法的思想应用于框架剪力墙结构,并结合若干工程实例进行了讨论。从数值算例的计算结果可知,虚边界元法的计算精度、计算效率及其数值稳定性均较好;尤其是相对有限元法,在同等计算精度的前提下其计算自由度大大地减少,且初始数据准备相对简单。
The virtual boundary element method is a relatively new numerical method with highly computational accuracy and less prepared data, and it could avoid singularity integral in the direct boundary element method. The primal research work about virtual boundary element method is on the problems of single domain. Recently, the idea to solve multi - domain composite problem with the virtual boundary element method has become mature and could be used to solve engineering problems extensively. In the paper, this method is used to solve frame - shearwall structure, and some relational examples are discussed. From the results of numerical examples, it is dom and the time to prepare the initial data with the same accuracy.
出处
《结构工程师》
2007年第2期48-52,共5页
Structural Engineers
关键词
多域组合问题/弹性力学
虚边界元
最小二乘法
剪力墙结构
multi -domain composite problem/elasticity, virtual boundary element, least squares method, shearwall structure
