A CURVILINEAR SPECTRAL OVERLAY METHOD FOR HIGH-GRADIENT PROBLEMS

被引：11

作者：

BELYTSCHKO, T ^{[1
]}

LU, YY ^{[1
]}

机构：

[1] NORTHWESTERN UNIV,ROBERT R MCCORMICK SCH ENGN & APPL SCI,DEPT CIVIL ENGN,EVANSTON,IL 60208

来源：

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING | 1992年 / 95卷 / 03期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0045-7825(92)90194-O

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The spectral overlay method is extended to domains with curvilinear boundaries. In the spectral overlay method, high resolution of localized steep gradients is achieved by overlaying a spectral interpolant on a standard finite element mesh. A special integration scheme is developed which enables the method to satisfy the patch test for a curvilinear overlay. Results are compared to closed form solutions with high gradients and the method is shown to be very powerful in capturing the shape of the gradient field and its peak value.

引用

页码：383 / 396

页数：14

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