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Start Over Author "Jiang Weifeng" Publisher springer science and business media llc
15 results on '"Jiang Weifeng"'

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

Author

Taihua Zhang, Guangjian Peng, Cheng Wenqiang, Chen Heng, Jiang Weifeng, Jiangjiang Hu, and Yi Ma

Subjects
Materials science, media_common.quotation_subject, Numerical analysis, 02 engineering and technology, Mechanics, Strain hardening exponent, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Asymmetry, Power law, Finite element method, 0104 chemical sciences, Residual stress, Indentation, General Materials Science, 0210 nano-technology, media_common
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.

Published
2019
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