Improvement of accuracy of cycle jump method for analysis under cyclic load
In this paper, formulations and some computational results of cycle jump method based on the nonlinear finite element method are presented. Problems, involving nonlinear cyclic deformation, such as low cycle fatigue problems can be solved by the proposed cycle jump method. To solve the problems of n...
| Main Authors: | , , |
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| Format: | Article |
| Language: | Japanese |
| Published: |
The Japan Society of Mechanical Engineers
2017-09-01
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| Series: | Nihon Kikai Gakkai ronbunshu |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/transjsme/83/854/83_17-00300/_pdf/-char/en |
| _version_ | 1798015190468395008 |
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| author | Kohmei SATOH Yasunori YUSA Hiroshi OKADA |
| author_facet | Kohmei SATOH Yasunori YUSA Hiroshi OKADA |
| author_sort | Kohmei SATOH |
| collection | DOAJ |
| description | In this paper, formulations and some computational results of cycle jump method based on the nonlinear finite element method are presented. Problems, involving nonlinear cyclic deformation, such as low cycle fatigue problems can be solved by the proposed cycle jump method. To solve the problems of nonlinear cyclic deformation of structure by the nonlinear finite element method with a cycle-by-cycle approach, a large amount of computational time is generally required. Thus a cycle jump method is presented from a view point of temporal multi-scale analysis. Then, an alternative analytical procedure consisting of three steps is proposed. They are a few cycles of nonlinear analysis in a cycle-by-cycle fashion, computations of jumps of strain history dependent quantities (extrapolations) based on the results of the cycle-by-cycle analysis and a cycle jump for several dozen to several hundred cycles using the results of the extrapolations. The results of cycle jump analyses are presented and their accuracies are critically examined. It was found that the results of several load cycles at the beginning of each cycle-by-cycle analysis step should be excluded from the computations of the extrapolation step. |
| first_indexed | 2024-04-11T15:29:33Z |
| format | Article |
| id | doaj.art-bfc6cff2258b4e03ac7a93e36cf58074 |
| institution | Directory Open Access Journal |
| issn | 2187-9761 |
| language | Japanese |
| last_indexed | 2024-04-11T15:29:33Z |
| publishDate | 2017-09-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Nihon Kikai Gakkai ronbunshu |
| spelling | doaj.art-bfc6cff2258b4e03ac7a93e36cf580742022-12-22T04:16:10ZjpnThe Japan Society of Mechanical EngineersNihon Kikai Gakkai ronbunshu2187-97612017-09-018385417-0030017-0030010.1299/transjsme.17-00300transjsmeImprovement of accuracy of cycle jump method for analysis under cyclic loadKohmei SATOH0Yasunori YUSA1Hiroshi OKADA2Graduate school of Science and Technology, Tokyo University of ScienceFaculty of Science and Technology, Tokyo University of ScienceFaculty of Science and Technology, Tokyo University of ScienceIn this paper, formulations and some computational results of cycle jump method based on the nonlinear finite element method are presented. Problems, involving nonlinear cyclic deformation, such as low cycle fatigue problems can be solved by the proposed cycle jump method. To solve the problems of nonlinear cyclic deformation of structure by the nonlinear finite element method with a cycle-by-cycle approach, a large amount of computational time is generally required. Thus a cycle jump method is presented from a view point of temporal multi-scale analysis. Then, an alternative analytical procedure consisting of three steps is proposed. They are a few cycles of nonlinear analysis in a cycle-by-cycle fashion, computations of jumps of strain history dependent quantities (extrapolations) based on the results of the cycle-by-cycle analysis and a cycle jump for several dozen to several hundred cycles using the results of the extrapolations. The results of cycle jump analyses are presented and their accuracies are critically examined. It was found that the results of several load cycles at the beginning of each cycle-by-cycle analysis step should be excluded from the computations of the extrapolation step.https://www.jstage.jst.go.jp/article/transjsme/83/854/83_17-00300/_pdf/-char/encycle jump methodcyclic loadtemporal multi-scale methodelastic-plastic analysisnonlinear finite element method |
| spellingShingle | Kohmei SATOH Yasunori YUSA Hiroshi OKADA Improvement of accuracy of cycle jump method for analysis under cyclic load Nihon Kikai Gakkai ronbunshu cycle jump method cyclic load temporal multi-scale method elastic-plastic analysis nonlinear finite element method |
| title | Improvement of accuracy of cycle jump method for analysis under cyclic load |
| title_full | Improvement of accuracy of cycle jump method for analysis under cyclic load |
| title_fullStr | Improvement of accuracy of cycle jump method for analysis under cyclic load |
| title_full_unstemmed | Improvement of accuracy of cycle jump method for analysis under cyclic load |
| title_short | Improvement of accuracy of cycle jump method for analysis under cyclic load |
| title_sort | improvement of accuracy of cycle jump method for analysis under cyclic load |
| topic | cycle jump method cyclic load temporal multi-scale method elastic-plastic analysis nonlinear finite element method |
| url | https://www.jstage.jst.go.jp/article/transjsme/83/854/83_17-00300/_pdf/-char/en |
| work_keys_str_mv | AT kohmeisatoh improvementofaccuracyofcyclejumpmethodforanalysisundercyclicload AT yasunoriyusa improvementofaccuracyofcyclejumpmethodforanalysisundercyclicload AT hiroshiokada improvementofaccuracyofcyclejumpmethodforanalysisundercyclicload |