{"title":"添加17-4PH不锈钢应变速率相关力学性能的XFEM分析","authors":"B. Kalita, J. R.","doi":"10.1115/1.4056729","DOIUrl":null,"url":null,"abstract":"\n Additively manufactured (AM) specimens of 17-4PH stainless steel corresponding to the three-point bend test, compact tension test and single edge cracks were analysed using Extended Finite Element Method (XFEM) approach. A two-dimensional and three-dimensional elastic-plastic simulation were conducted using “Abaqus 6.14” software based on the experimental results and validated with the simulation results. In XFEM, the partition of unity (PU) was used to model a crack in the standard finite element mesh. Based on simulation results, the present study compares the mechanical properties of AM 17-4 PH stainless steel samples with those of wrought 17-4 PH samples. Stress intensity factor and J integral were used to measure fracture toughness of the specimens. The change in fracture toughness with strain rate was evaluated by simulating two-dimensional compact tension specimens. The presence of defects such as pores resulting from entrapped gas, un-melted regions, and powder particles resulting from lack of fusion were the main reasons for lower elongation to failure of LPBF produced 17-4PH SS reported in the literature.","PeriodicalId":15700,"journal":{"name":"Journal of Engineering Materials and Technology-transactions of The Asme","volume":null,"pages":null},"PeriodicalIF":1.5000,"publicationDate":"2023-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"XFEM Analysis of Strain Rate Dependent Mechanical Properties of Additively Manufactured 17-4 PH Stainless Steel\",\"authors\":\"B. Kalita, J. R.\",\"doi\":\"10.1115/1.4056729\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"\\n Additively manufactured (AM) specimens of 17-4PH stainless steel corresponding to the three-point bend test, compact tension test and single edge cracks were analysed using Extended Finite Element Method (XFEM) approach. A two-dimensional and three-dimensional elastic-plastic simulation were conducted using “Abaqus 6.14” software based on the experimental results and validated with the simulation results. In XFEM, the partition of unity (PU) was used to model a crack in the standard finite element mesh. Based on simulation results, the present study compares the mechanical properties of AM 17-4 PH stainless steel samples with those of wrought 17-4 PH samples. Stress intensity factor and J integral were used to measure fracture toughness of the specimens. The change in fracture toughness with strain rate was evaluated by simulating two-dimensional compact tension specimens. The presence of defects such as pores resulting from entrapped gas, un-melted regions, and powder particles resulting from lack of fusion were the main reasons for lower elongation to failure of LPBF produced 17-4PH SS reported in the literature.\",\"PeriodicalId\":15700,\"journal\":{\"name\":\"Journal of Engineering Materials and Technology-transactions of The Asme\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.5000,\"publicationDate\":\"2023-01-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Engineering Materials and Technology-transactions of The Asme\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1115/1.4056729\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ENGINEERING, MECHANICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Engineering Materials and Technology-transactions of The Asme","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1115/1.4056729","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}
XFEM Analysis of Strain Rate Dependent Mechanical Properties of Additively Manufactured 17-4 PH Stainless Steel
Additively manufactured (AM) specimens of 17-4PH stainless steel corresponding to the three-point bend test, compact tension test and single edge cracks were analysed using Extended Finite Element Method (XFEM) approach. A two-dimensional and three-dimensional elastic-plastic simulation were conducted using “Abaqus 6.14” software based on the experimental results and validated with the simulation results. In XFEM, the partition of unity (PU) was used to model a crack in the standard finite element mesh. Based on simulation results, the present study compares the mechanical properties of AM 17-4 PH stainless steel samples with those of wrought 17-4 PH samples. Stress intensity factor and J integral were used to measure fracture toughness of the specimens. The change in fracture toughness with strain rate was evaluated by simulating two-dimensional compact tension specimens. The presence of defects such as pores resulting from entrapped gas, un-melted regions, and powder particles resulting from lack of fusion were the main reasons for lower elongation to failure of LPBF produced 17-4PH SS reported in the literature.