Knowledge Management System of Institue of Mechanics, CAS
| Dynamic damage and failure in viscoplastic materials | |
Zheng J(郑坚); Wang ZP ; JIAN, Z (reprint author), CHINESE ACAD SCI,INST MECH,NON LINEAR MECH CONTINUOUS MEDIA LAB,BEIJING 100080,PEOPLES R CHINA.
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| Source Publication | Engineering Fracture Mechanics
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| 1995 | |
| Volume | 52Issue:6Pages:1065-& |
| ISSN | 0013-7944 |
| Abstract | In this paper, a dynamic damage model in ductile solids under the application of a dynamic mean tensile stress is developed. The proposed model considers void nucleation and growth as parts of the damage process under intense dynamic loading (strain rates epsilon greater than or equal to 10(3) s(-1)). The evolution equation of the ductile void has the closed form, in which work-hardening behavior, rate-dependent contribution and inertial effects are taken into account. Meanwhile, a plate impact test is performed for simulating the dynamic fracture process in LY12 aluminum alloy. The damage model is incorporated in a hydrodynamic computer code, to simulate the first few stress reverberations in the target as it spalls and postimpact porosity in the specimen. Fair agreement between computed and experimental results is obtained. Numerical analysis shows that the influence of inertial resistance on the initial void growth in the case of high loading rate can not be neglected. It is also indicated that the dynamic growth of voids is highly sensitive to the strain rates. |
| Keyword | Fracture Ductile Copper |
| DOI | 10.1016/0013-7944(95)00061-Y |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:A1995TJ14700009 |
| WOS Keyword | FRACTURE ; DUCTILE ; COPPER |
| WOS Research Area | Mechanics |
| WOS Subject | Mechanics |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/39176 |
| Collection | 力学所知识产出(1956-2008) |
| Corresponding Author | JIAN, Z (reprint author), CHINESE ACAD SCI,INST MECH,NON LINEAR MECH CONTINUOUS MEDIA LAB,BEIJING 100080,PEOPLES R CHINA. |
| Recommended Citation GB/T 7714 | Zheng J,Wang ZP,JIAN, Z . Dynamic damage and failure in viscoplastic materials[J]. Engineering Fracture Mechanics,1995,52,6,:1065-&. |
| APA | 郑坚,Wang ZP,&JIAN, Z .(1995).Dynamic damage and failure in viscoplastic materials.Engineering Fracture Mechanics,52(6),1065-&. |
| MLA | 郑坚,et al."Dynamic damage and failure in viscoplastic materials".Engineering Fracture Mechanics 52.6(1995):1065-&. |
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