OPTIMIZATION PROCEDURE FOR STRESS-CONCENTRATIONS BY THE FINITE-ELEMENT TECHNIQUE

被引：60

作者：

SCHNACK, E

机构：

[1] Institute for Technical Mechanics, University of Kaiserslauten

来源：

INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING | 1979年 / 14卷 / 01期

关键词：

D O I：

10.1002/nme.1620140109

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Load‐free notch surfaces of bodies made of a linear‐elastic, homogeneous, isotropic material are optimized within given variation domains by means of an interation procedure so that the occurring maximum tangéntial stress is reduced to a minimum. The hypothesis of a constant tangential stress distribution for obtaining minimal notch stresses proposed by R. V. Baud has been confirmed by means of the Fade‐away Law of the notch stress theory. The finite element method is applied for calculating the displacement and stress field of the styructure. An increment procedure is used for determing the displacement field after every iteration step, which permits the calculation of the displacement quantities with sufficient accuracy in a single step. Numerical solutions and their comparison with analytical solutions and stress results obtained with the aid of photo‐elasticity confirm the usefulness of this procedure. The known optimization methods1,2 differ from those used in the present paper. Copyright © 1979 John Wiley & Sons, Ltd

引用

页码：115 / 124

页数：10

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