{"title":"混合模式裂纹扩展的分子动力学模拟分析","authors":"L. Stepanova, O. Belova","doi":"10.1063/5.0059574","DOIUrl":null,"url":null,"abstract":"An in-depth study of the influence of geometric characteristics (model dimensions, crack length), temperature, strain rate and loading mixing parameter on the plate strength, crack growth and crack propagation direction angle was carried out. The material selected for this study is aluminum. The crack propagation direction angles of a central crack in an aluminum plate under mixed mode loading are determined using the molecular dynamics method realized in LAMMPS (Large-scale Atomic/Molecular Massively Parallel Simulator). Atomistic modeling of mixed-mode loadings of the plane medium with the central crack allowed us to find all the crack propagation direction angles in the full range of the mixed mode loadings. An embedded atom potential (EAM) available in LAMMPS molecular dynamics (MD) software is utilized to accurately pinpoint mixed-mode crack growth.","PeriodicalId":177478,"journal":{"name":"29TH RUSSIAN CONFERENCE ON MATHEMATICAL MODELLING IN NATURAL SCIENCES","volume":"1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2021-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"4","resultStr":"{\"title\":\"A molecular dynamics simulation analysis of mixed mode crack growth\",\"authors\":\"L. Stepanova, O. Belova\",\"doi\":\"10.1063/5.0059574\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"An in-depth study of the influence of geometric characteristics (model dimensions, crack length), temperature, strain rate and loading mixing parameter on the plate strength, crack growth and crack propagation direction angle was carried out. The material selected for this study is aluminum. The crack propagation direction angles of a central crack in an aluminum plate under mixed mode loading are determined using the molecular dynamics method realized in LAMMPS (Large-scale Atomic/Molecular Massively Parallel Simulator). Atomistic modeling of mixed-mode loadings of the plane medium with the central crack allowed us to find all the crack propagation direction angles in the full range of the mixed mode loadings. An embedded atom potential (EAM) available in LAMMPS molecular dynamics (MD) software is utilized to accurately pinpoint mixed-mode crack growth.\",\"PeriodicalId\":177478,\"journal\":{\"name\":\"29TH RUSSIAN CONFERENCE ON MATHEMATICAL MODELLING IN NATURAL SCIENCES\",\"volume\":\"1 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2021-07-13\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"4\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"29TH RUSSIAN CONFERENCE ON MATHEMATICAL MODELLING IN NATURAL SCIENCES\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1063/5.0059574\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"29TH RUSSIAN CONFERENCE ON MATHEMATICAL MODELLING IN NATURAL SCIENCES","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1063/5.0059574","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 4
摘要
深入研究了几何特征(模型尺寸、裂纹长度)、温度、应变速率和加载混合参数对板强度、裂纹扩展和裂纹扩展方向角的影响。本研究选用的材料为铝。利用LAMMPS (large - large Atomic/ molecular Massively Parallel Simulator)中实现的分子动力学方法，确定了混合模式载荷作用下铝板中心裂纹的裂纹扩展方向角。对含中心裂纹的平面介质的混合模态加载进行原子建模，可以求出混合模态加载全范围内的所有裂纹扩展方向角。利用LAMMPS分子动力学(MD)软件中的嵌入原子势(EAM)来精确定位混合模式裂纹扩展。
A molecular dynamics simulation analysis of mixed mode crack growth
An in-depth study of the influence of geometric characteristics (model dimensions, crack length), temperature, strain rate and loading mixing parameter on the plate strength, crack growth and crack propagation direction angle was carried out. The material selected for this study is aluminum. The crack propagation direction angles of a central crack in an aluminum plate under mixed mode loading are determined using the molecular dynamics method realized in LAMMPS (Large-scale Atomic/Molecular Massively Parallel Simulator). Atomistic modeling of mixed-mode loadings of the plane medium with the central crack allowed us to find all the crack propagation direction angles in the full range of the mixed mode loadings. An embedded atom potential (EAM) available in LAMMPS molecular dynamics (MD) software is utilized to accurately pinpoint mixed-mode crack growth.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
