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Numerical investigation of spherical indentation on elastic-power-law strain-hardening solids with non-equibiaxial residual stresses

  • Taihua Zhang (a1), Wenqiang Cheng (a1), Guangjian Peng (a1), Yi Ma (a1), Weifeng Jiang (a1), Jiangjiang Hu (a1) and Heng Chen (a1)...

Abstract

The finite element simulations show that non-equibiaxial residual stresses (RS) can shift the load–depth curve from the unstressed curve and cause elliptical remnant indentation in spherical indentation. Thus the relative load change between stressed and unstressed samples and the asymmetry of elliptical remnant indentation were employed as characteristic parameters to evaluate the magnitude and directionality of RS. Through theoretical and numerical analysis, the effects of RS on indentation load and remnant impression as well as the affect mechanism were systematically discussed. Finally, two equations which could provide foundations for establishing spherical indentation method to evaluate non-equibiaxial RS were obtained.

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Corresponding author

Address all correspondence to Guangjian Peng at penggj@zjut.edu.cn

References

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Numerical investigation of spherical indentation on elastic-power-law strain-hardening solids with non-equibiaxial residual stresses

  • Taihua Zhang (a1), Wenqiang Cheng (a1), Guangjian Peng (a1), Yi Ma (a1), Weifeng Jiang (a1), Jiangjiang Hu (a1) and Heng Chen (a1)...

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