Title

Application Of The Boundary Element Method To Measurement Of Residual Stress

Abstract

An elastic inverse problem is studied and applied to the hole-drilling method of destructive measurement of residual stresses. In this method the strain or displacement is experimentally determined at a number of internal points and boundary conditions at the hole surface prior to drilling are unknown (both traction and displacement). In the inverse problem, a least squares minimization is proposed in conjunction with physical constraints to determine the unknown boundary condition. The constraints used are equilibrium conditions for a rigid body. The introduction of these constraints has the effect of stabilizing the solution and guiding it toward the exact solution. Numerical examples are given to show the accuracy and tolerance of the proposed method. The application of the boundary element inverse approach makes the existing experimental technique more informative.

Publication Date

1-1-1994

Publication Title

International Conference on Boundary Element Technology

Number of Pages

165-172

Document Type

Article; Proceedings Paper

Identifier

scopus

Personal Identifier

scopus

Socpus ID

0028333244 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0028333244

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