IMECH-IR  > 流固耦合系统力学重点实验室
Instability criterion of materials in combined stress states and its application to orthogonal cutting process
Ma W(马维); Li XW(李相旺); Dai LH(戴兰宏); Ling Z(凌中); Ma, W; Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China.
Source PublicationINTERNATIONAL JOURNAL OF PLASTICITY
2012-03-15
Volume30-31Pages:18-40
ISSN0749-6419
AbstractThe loadings of variable combined stresses may cause different instabilities of materials such as the shear localization instability or non-localized thermal softening instability. The purpose of this paper is to present a theoretical analysis of instability behaviors of material under the loading conditions of combined stresses and apply the analytical results to interpret the removal mechanisms of chip materials in cutting process. First, the perturbation analysis of material instability under the loading conditions of combined stresses and relatively critical conditions are presented, followed by discussions on relations between the instability behaviors of materials and the loading conditions. Then, the removal mechanisms of chip materials in cutting process are studied by numerical simulation. The formation of continuous and discontinuous chips is shown closely related to the plastic flow and instability behaviors of the chip material, and the transformation between the two types of chips is found dependent on the ratio of plastic work dissipated by dilatation deformation and that dissipated by shear deformation.
KeywordInstability Criterion Plastic Collapse Cutting And Forming Asymptotic Analysis Thermomechanical Processes Shear-band Formation Chip Formation Strain Localization Simulation Temperatures Plasticity Prediction Rates Model Flow
Subject Area极端条件下的材料和结构
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000301626400002
Funding OrganizationThe authors acknowledge financial supports from the National Nature Science Foundation of China (Grant No. 10972227) and the National Key Basic Research Program of China (Grant No. 2009CB724401).
DepartmentLMFS工程地质体力学(LEM)
Classification一类
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/46635
Collection流固耦合系统力学重点实验室
非线性力学国家重点实验室
Corresponding AuthorMa, W; Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Ma W,Li XW,Dai LH,et al. Instability criterion of materials in combined stress states and its application to orthogonal cutting process[J]. INTERNATIONAL JOURNAL OF PLASTICITY,2012,30-31:18-40.
APA 马维,李相旺,戴兰宏,凌中,Ma, W,&Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China..(2012).Instability criterion of materials in combined stress states and its application to orthogonal cutting process.INTERNATIONAL JOURNAL OF PLASTICITY,30-31,18-40.
MLA 马维,et al."Instability criterion of materials in combined stress states and its application to orthogonal cutting process".INTERNATIONAL JOURNAL OF PLASTICITY 30-31(2012):18-40.
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