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| Study of the damage-induced anisotropy of quasi-brittle materials using the component assembling model | |
Zhang J(张晶); Liang NG(梁乃刚) ; Deng SC(邓守春); Liu JX(刘金兴); Liu XY(刘晓宇); Fu Q(付强); Zhang J
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| Source Publication | International Journal Of Damage Mechanics |
| 2008 | |
| Pages | 197-221 |
| Conference Name | 7th World Congress on Computational Mechanics |
| Conference Date | JUL 16-22, 2006 |
| Conference Place | Los Angeles, CA |
| Abstract | Damage-induced anisotropy of quasi-brittle materials is investigated using component assembling model in this study. Damage-induced anisotropy is one significant character of quasi-brittle materials coupled with nonlinearity and strain softening. Formulation of such complicated phenomena is a difficult problem till now. The present model is based on the component assembling concept, where constitutive equations of materials are formed by means of assembling two kinds of components' response functions. These two kinds of components, orientational and volumetric ones, are abstracted based on pair-functional potentials and the Cauchy - Born rule. Moreover, macroscopic damage of quasi-brittle materials can be reflected by stiffness changing of orientational components, which represent grouped atomic bonds along discrete directions. Simultaneously, anisotropic characters are captured by the naturally directional property of the orientational component. Initial damage surface in the axial-shear stress space is calculated and analyzed. Furthermore, the anisotropic quasi-brittle damage behaviors of concrete under uniaxial, proportional, and nonproportional combined loading are analyzed to elucidate the utility and limitations of the present damage model. The numerical results show good agreement with the experimental data and predicted results of the classical anisotropic damage models. |
| Keyword | Anisotropic Damage Quasi-brittle Materials Initial Damage Surface Uniaxial Tension Non-proportional Loading Component Assembling Model Continuum Mechanics Solids Microcracks Formulation Simulation Fracture Issues |
| WOS ID | WOS:000255984800003 |
| Indexed By | CPCI-S ; EI |
| Language | 英语 |
| Citation statistics | |
| Document Type | 会议论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/25438 |
| Collection | 力学所知识产出(1956-2008) |
| Corresponding Author | Zhang J |
| Recommended Citation GB/T 7714 | Zhang J,Liang NG,Deng SC,et al. Study of the damage-induced anisotropy of quasi-brittle materials using the component assembling model[C]International Journal Of Damage Mechanics,2008:197-221. |
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