计算物理 ›› 2007, Vol. 24 ›› Issue (1): 35-41.
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曾亿山1,2, 曾清红2
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ZENG Yishan1,2, ZENG Qinghong2
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摘要: 使用单位分解积分,对传统的无单元伽辽金方法进行改进.有限覆盖和单位分解是单位分解积分的数学基础,对单位分解积分进行了严格证明,并指出使用Shepard函数作为单位分解函数是一个很好的选择.数值实例表明,使用单位分解积分进行数值求积的无单元伽辽金方法是一种真正的无网格方法,与经典的背景网格积分相比具有更高的精度.
关键词: 无网格方法, 无单元伽辽金方法, 数值积分, 有限覆盖, 单位分解, 单位分解积分
Abstract: The element-free Galerkin method (EFGM) is improved with partition of unity quadrature (PUQ).Partition of unity quadrature is shown strictly with finite covering and partition of unity.Using Shepard functions as partition of unity functions,we obtain good results.The EFGM with PUQ is a true meshless method. Computational results of EFGM with partition of unity quadrature are more accurate than those of the traditional EFGM with background quadrature.
Key words: meshless method, element free Galerkin method, numerical quadrature, finite covering, partition of unity, partition of unity quadrature
中图分类号:
O242.21
曾亿山, 曾清红. 一种改进的无单元伽辽金方法[J]. 计算物理, 2007, 24(1): 35-41.
ZENG Yishan, ZENG Qinghong. An Improved Element Free Galerkin Method[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2007, 24(1): 35-41.
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