Finite element study of ductile fracture mechanics problems considering nonlinear deformation behaviors

Chang New Chen

研究成果: Conference contribution

摘要

Elastic-plastic finite element procedure considering nonlinear deformation behavior, along with an efficient and reliable iterative computation scheme adopted for obtaining well converged solutions, is used to study the ductile fracture mechanics problems. The converged finite element results include fracture parameters of integral, differential and displacement models. These parameters can be used to study the nonlinear fracture behavior of structures. Special investigation concerning the elastic-plastic fracture characteristics inherent in local deformation and local displacement in the vicinity of crack tips is carried out in order to adopt certain advantage of the finite element method to evaluate fracture by displacement-related parameter which is different from the traditional COD or CTOD evaluations. And the study regarding correlations between two different models of fracture parameters is carried out, which shows certain types of linear relations for the external causes being above a certain level under which the plastic deformation around crack tip is up to a certain degree of severity. This tendency of correlations between different fracture parameters holds good for model problems with and without considering nonlinear deformation behaviors. Therefore a conclusion can be made that the linear relation is a plastic deformation-characterized fracture property of the ductile fracture problems. The establishment of this theoretical conclusion is largely benefitted by proper finite element modeling and converged iterative computations.

原文English
主出版物標題Materials Engineering
發行者Publ by ASME
頁面721-728
頁數8
ISBN(列印)0791807851
出版狀態Published - 1993 一月 1
事件Proceedings of the 12th International Conference on Offshore Mechanical and Arctic Engineering (OMAE 1993) - Glasgow, Scotland, Engl
持續時間: 1993 六月 201993 六月 24

出版系列

名字Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE

Other

OtherProceedings of the 12th International Conference on Offshore Mechanical and Arctic Engineering (OMAE 1993)
城市Glasgow, Scotland, Engl
期間93-06-2093-06-24

指紋

Ductile fracture
Fracture mechanics
Crack tips
Plastic deformation
Plastics
Finite element method

All Science Journal Classification (ASJC) codes

  • Ocean Engineering
  • Energy Engineering and Power Technology
  • Mechanical Engineering

引用此文

Chen, C. N. (1993). Finite element study of ductile fracture mechanics problems considering nonlinear deformation behaviors. 於 Materials Engineering (頁 721-728). (Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE). Publ by ASME.
Chen, Chang New. / Finite element study of ductile fracture mechanics problems considering nonlinear deformation behaviors. Materials Engineering. Publ by ASME, 1993. 頁 721-728 (Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE).
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Chen, CN 1993, Finite element study of ductile fracture mechanics problems considering nonlinear deformation behaviors. 於 Materials Engineering. Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE, Publ by ASME, 頁 721-728, Proceedings of the 12th International Conference on Offshore Mechanical and Arctic Engineering (OMAE 1993), Glasgow, Scotland, Engl, 93-06-20.

Finite element study of ductile fracture mechanics problems considering nonlinear deformation behaviors. / Chen, Chang New.

Materials Engineering. Publ by ASME, 1993. p. 721-728 (Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE).

研究成果: Conference contribution

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Chen CN. Finite element study of ductile fracture mechanics problems considering nonlinear deformation behaviors. 於 Materials Engineering. Publ by ASME. 1993. p. 721-728. (Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE).