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| Construction of the constitutive force function of quasi-brittle materials based on the peridynamic theory |
| Received:March 27, 2016 Revised:August 09, 2016 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201704004 |
| KeyWord:peridynamic bond quasi-brittle material prototype microelastic brittle material constitutive force function |
| Author | Institution |
| 石宏顺 |
贵州大学 机械工程学院, 贵阳 |
| 钱松荣 |
贵州大学 机械工程学院, 贵阳 |
| 原群盛 |
贵州大学 机械工程学院, 贵阳 |
| 徐婷 |
贵州大学 机械工程学院, 贵阳 |
| 张国浩 |
贵州大学 机械工程学院, 贵阳 |
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| Abstract: |
| Peridynamic(PD) theory is a new non-local continuum mechanics theory,which can be used for studying material failure.Based on the linear and nonlinear mechanical behavior of failure process of quasi-brittle materials,the basic form constitutive force function of the quasi-brittle material was built by introducing the damage model of bond,which divided the fracture process of the bond into the linear elastic deformation stage and the nonlinear damage deformation stage,into the constitutive force function of the prototype microelastic brittle (PMB) material.Then,a typical quasi-brittle material was used as an example to build this constitutive force function.Experiment and PD numerical simulation of crack growth in rock-like material model with pre-existing single crack at different angles under a compression load were conducted.The results showed that the position of crack initiation and the direction of crack propagation were consistent to some extent,and verified that the constitutive force function of the typical quasi-brittle material was suitable for failure analysis. |
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