Knowledge Management System of Institue of Mechanics, CAS
| Statistical and stochastic description of microvoid evolution observed in dynamic failure of ductile materials | |
Huang ZP(黄筑平) ; Li HL; Huang, ZP (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100080, Peoples R China.
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| Source Publication | Key Engineering Materials
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| 2000 | |
| Volume | 177-180Issue:Advances in Engineering PlasticityPages:1-12 |
| ISSN | 1013-9826 |
| Abstract | A brief review is presented of statistical approaches on microdamage evolution. An experimental study of statistical microdamage evolution in two ductile materials under dynamic loading is carried out. The observation indicates that there are large differences in size and distribution of microvoids between these two materials. With this phenomenon in mind, kinetic equations governing the nucleation and growth of microvoids in nonlinear rate-dependent materials are combined with the balance law of void number to establish statistical differential equations that describe the evolution of microvoids' number density. The theoretical solution provides a reasonable explanation of the experimentally observed phenomenon. The effects of stochastic fluctuation which is influenced by the inhomogeneous microscopic structure of materials are subsequently examined (i.e. stochastic growth model). Based on the stochastic differential equation, a Fokker-Planck equation which governs the evolution of the transition probability is derived. The analytical solution for the transition probability is then obtained and the effects of stochastic fluctuation is discussed. The statistical and stochastic analyses may provide effective approaches to reveal the physics of damage evolution and dynamic failure process in ductile materials. |
| Subject Area | 力学 |
| URL | 查看原文 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000089404200001 |
| WOS Keyword | BRITTLE-FRACTURE ; SOLIDS ; MODELS |
| WOS Research Area | Materials Science ; Mechanics ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Ceramics ; Mechanics ; Metallurgy & Metallurgical Engineering ; Materials Science, Composites |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/17680 |
| Collection | 力学所知识产出(1956-2008) |
| Corresponding Author | Huang, ZP (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100080, Peoples R China. |
| Recommended Citation GB/T 7714 | Huang ZP,Li HL,Huang, ZP . Statistical and stochastic description of microvoid evolution observed in dynamic failure of ductile materials[J]. Key Engineering Materials,2000,177-180,Advances in Engineering Plasticity,:1-12. |
| APA | Huang ZP,Li HL,&Huang, ZP .(2000).Statistical and stochastic description of microvoid evolution observed in dynamic failure of ductile materials.Key Engineering Materials,177-180(Advances in Engineering Plasticity),1-12. |
| MLA | Huang ZP,et al."Statistical and stochastic description of microvoid evolution observed in dynamic failure of ductile materials".Key Engineering Materials 177-180.Advances in Engineering Plasticity(2000):1-12. |
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| KEM.177-180.1.pdf（824KB） | 开放获取 | -- | View Download | |||
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