An Improved Computational Strategy to Estimate Residual Stresses from Crack Compliance Data |
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Authors: | M Serafin W Cecot |
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Institution: | (1) Institute for Computational Civil Engineering, Cracow University of Technology, ul. Warszawska 24, 31-155 Kraków, Poland |
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Abstract: | The successive cracking (crack compliance) method is a destructive technique aimed at determination of residual stresses in
various structural members. The laboratory measurements performed during extension of a crack are followed by a computational
analysis. We propose a modification of the numerical approach in order to simplify the method and improve its accuracy. The
basic idea of the proposed modification is to approximate plastic strains rather than the residual stresses directly. Furthermore,
we use the goal oriented adaptive finite element method that generates optimal meshes for evaluation of strains at specific
points. |
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Keywords: | Residual stresses Crack compliance Adaptive finite element method |
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