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https://hdl.handle.net/10316/101637
Title: | Numerical analysis of the influence of the last cycle scheme on plasticity induced crack closure | Authors: | Camas, D. Antunes, F. Moreno, B. Gonzalez-Herrera, A. |
Keywords: | Finite elmeent analysis; plasticity induced crack closure; crack growth scheme; plastic wake | Issue Date: | 2019 | Project: | Ministerio de Economía y Competitividad of the Spanish Government through grant reference MAT2016-76951-C2-2-P and Universidad de Málaga through Plan Propio de Investigación y Transferencia Ministerio de Educación, Cultura y Deporte in the framework of the Programa Estatal de Promoción del Talento y su empleabilidad en I+D+i, Subprograma Estatal de Movilidad, del Plan Estatal de I+D+i through grant reference CAS18/00251 FEDER, through the Portugal-2020 program (PT2020), under the Regional Operational Program of the Center CENTRO-01-0145-FEDER-028789 Foundation for Science and Technology IP/MCTES through national funds (PIDDAC) through project no. 028789 |
Serial title, monograph or event: | Procedia Structural Integrity | Volume: | 17 | Abstract: | Plasticity induced crack closure is considered the main mechanism related to the premature contact of the crack flanks when a crack grows under cyclic loadings. This phenomenon has been studied numerically since the early 70s, when some researchers approached to metal fatigue problems by means of the finite element analysis. The numerical analysis requires the development of a plastic wake. How this plastic wake is developed has influence on the crack closure results and a great impact on the computational cost. When running a finite element analysis, it is not possible to consider all the loading cycles involved in an experimental test. The numerical effort is not acceptable. Therefore, in this work, the crack growth scheme is analyzed. In particular, the influence of the number of loading cycles after releasing the last set of nodes on plasticity induced crack closure results is studied. A CT aluminum specimen has been modelled three-dimensionally and several simulations have been run to evaluate the influence of the loading cycles after releasing the last set of nodes. The numerical analysis is made in terms of crack closure and opening values. | URI: | https://hdl.handle.net/10316/101637 | ISSN: | 24523216 | DOI: | 10.1016/j.prostr.2019.08.119 | Rights: | openAccess |
Appears in Collections: | I&D CEMMPRE - Artigos em Revistas Internacionais |
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