| 非均匀材料损伤破坏的多尺度耦合理论 |
| |
| 引用本文： | 张天军,许鸿杰,李树刚,马咪娜.非均匀材料损伤破坏的多尺度耦合理论[J].固体力学学报,2011,32(1):29-36. |
| |
| 作者姓名： | 张天军 许鸿杰 李树刚 马咪娜 |
| |
| 作者单位： | 西安科技大学理学院 |
| |
| 基金项目： | 国家自然科学基金项目(50574072,50874089); 陕西省教育厅专项科研基金项目(08JK366)资助 |
| |
| 摘 要： | 为研究微损伤对非均匀材料宏观破坏的影响,建立了非均匀材料的三维微单元强度分布模型,在平均场模型和集团分担模型的基础上,根据模拟计算结果建立了邻近单元加权分担模型;采用细观统计的方法建立了微观损伤造成宏观破坏的概率函数及跨尺度敏感性函数.结果表明:材料的损伤分数和名义应力越大,破坏集团之间的距离越近,宏观破坏概率就越大;...
|
| 关 键 词： | 多尺度 强度分布 破坏概率 敏感性 |
| 收稿时间： | 2009-05-26 |
A MULTI-SCALE COUPLING THEORY FOR DAMAGE AND FAILURE OF HETEROGENEOUS MATERIALS |
| |
| Tianjun Zhang,Hongjie Xu,Shugang Li,MiNa Ma.A MULTI-SCALE COUPLING THEORY FOR DAMAGE AND FAILURE OF HETEROGENEOUS MATERIALS[J].Acta Mechnica Solida Sinica,2011,32(1):29-36. |
| |
| Authors: | Tianjun Zhang Hongjie Xu Shugang Li MiNa Ma |
| |
| Institution: | Tianjun Zhang1 Hongjie Xu1 Shugang Li2 MiNa Ma1(1 College of Sciences,Xi'an University of Science and Technology,Xi'an,710054)(2 College of Energy,710054) |
| |
| Abstract: | In order to study the impact of micro-damage on the macro-failure of heterogeneous materials,we built a 3-D micro-element strength distribution model for heterogeneous materials.On the basis of the average field model and the group sharing model,and in accordance with the simulation results,an adjacent element weight sharing model was built.We used the microscopic statistical method to establish the probability function and the trans-scale sensitivity function of macroscopic failure caused by microscopic da... |
| |
| Keywords: | multi-scale strength distribution damage probability sensitivity |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《固体力学学报》浏览原始摘要信息 |
| 点击此处可从《固体力学学报》下载免费的PDF全文 |
|
