Residual stress sensitivity analysis using a complex variable finite element method

被引：21

作者：

Fielder, Randal ^{[1
]}

Montoya, Arturo ^{[1
]}

Millwater, Harry ^{[1
]}

Golden, Patrick ^{[2
]}

机构：

[1] Univ Texas San Antonio, San Antonio, TX 78249 USA

[2] US Air Force, Res Lab, Wright Patterson AFB, OH 45433 USA

来源：

INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES | 2017年 / 133卷

关键词：

Residual stress; Autofrettage; Sensitivity analysis; Complex variable finite element method; Complex taylor series expansion method; FATIGUE LIFE; PRESSURE-VESSEL; BAUSCHINGER; AUTOFRETTAGE; TUBES; BEHAVIOR; FIELDS;

D O I：

10.1016/j.ijmecsci.2017.08.035

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The application of the complex variable finite element method, ZFEM, to structures containing residual stresses is detailed. A thick-walled sphere model is subjected to an autofrettage process to induce the residual stress field and solved using ZFEM. The stress results from ZFEM are compared to an analytical solution and to standard finite element results. Sensitivities are calculated with respect to material parameters and to the applied load. The ZFEM partial derivative results are shown to provide excellent accuracy when compared with numerical derivatives of the analytical solution and finite differencing of standard fmite element solutions. Hence, ZFEM provides an effective step-size independent method to compute shape, material and loading sensitivities for structures subjected to residual stresses. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：112 / 120

页数：9

共 51 条

[1] Analytical approach in autofrettaged spherical pressure vessels considering the Bauschinger effect [J].