Investigation on gradient-dependent nonlocal constitutive models for elasto-plasticity coupled with damage |
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| Authors: | Shen Xin-pu Shen Guo-xiao Chen Li-xin Yang Lu |
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| Institution: | College of Architectural Engineering, Shenyang University of Technology, Shenyang 110023, P.R.China;Department of Applied Sciences, Taiyuan Institute of Heavy Machine,;
Taiyuan 030024, P.R.China;Engrg Center for Coal_Bedded Methane, Northeastern Bureau of Coal Geology, Shenyang 110035, P.R.China |
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| Abstract: | Firstly, typical gradient-dependent nonlocal inelastic models were briefly reviewed. Secondly, based on the principle of ‘gradient-dependent
energy dissipation’, a gradient-dependent constitutive model for plasticity coupled with isotropic damage was presented in
the framework of continuum thermodynamics. Numerical scheme for calculation of Laplacian term of damage field with the numerical
results obtained by FEM calculation was proposed. Equations have been presented on the basis of Taylor series for both 2-dimensional
and 3-dimensional cases, respectively. Numerical results have indicated the validity of the proposed gradient-dependent model
and corresponding numerical scheme.
Foundation item: the Natural Science Foundation of Liaoning Province of China (2001101023)
Biography: SHEN Xin-pu, Professor, Doctor, E-mail: xinpushen@vip.sina.com |
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| Keywords: | damage plasticity nonlocal constitutive model gradient-dependent |
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