해밀토니안의 시간 불연속 변분적분기를 이용한 2차원 탄소성 응력파 해석Analysis of 2-Dimensional Elasto-Plastic Stress by a Time-Discontinuous Variational Integrator of Hamiltonian

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This paper is concerned with the analysis of elasto-plastic stress waves in a mode I semi-infinite cracked solid subjected to Heaviside pulse load. This study adopts a time-discontinuous variational integrator based on Hamiltonian in order to reduce the numerical dispersive and dissipative errors. This also utilizes an integration scheme of the constitutive model with 2nd-order accuracy which is formulated on the strain space for a rate and temperature dependent material model. Finite element analyses of elasto-plastic stress waves are carried out in order to compare the accuracy between a conventional Galerkin method and the time- discontinuous variational integrator.
Publisher
한국소성가공학회
Issue Date
2008-10-09
Language
KOR
Citation

한국소성가공학회 2008년도 추계학술대회

URI
http://hdl.handle.net/10203/14543
Appears in Collection
ME-Conference Papers(학술회의논문)

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