| 颗粒增强聚合物复合材料损伤模型 |
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| 引用本文： | 樊建平,邓泽贤,崔智帮.颗粒增强聚合物复合材料损伤模型[J].华中科技大学学报(自然科学版),2007,35(8):112-114. |
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| 作者姓名： | 樊建平 邓泽贤 崔智帮 |
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| 作者单位： | 1. 华中科技大学,土木工程与力学学院,湖北,武汉,430074
2. 香港理工大学,工业与系统工程学系,香港 |
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| 摘 要： | 研究了颗粒增强聚合物复合材料的力学行为,研究得知:材料屈服、裂纹形核、扩展与贯通直至最终断裂是一逐渐劣化过程,而损伤理论正是这一劣化过程的良好描述.通过假设自由能和耗散势函数,导出了损伤演化规律,与实验比较,模型和试验结果基本符合.进一步采用改进的Dugdale模型,重点研究损伤对GB/PPO复合材料宏观裂纹起裂的影响,通过建立损伤模型来描述材料的劣化行为和裂纹扩展,结果表明,损伤区域严重影响裂尖的性能,材料损伤对宏观裂纹起裂影响不可忽略.
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| 关 键 词： | 聚合物复合材料 损伤演化 单胞模型 断裂 颗粒增强 聚合 物复合材料 损伤模型 polymer composites reinforced model 材料损伤 性能 裂尖 严重 损伤区域 裂纹扩展 行为 影响 裂纹起裂 重点 改进 结果 试验 |
| 文章编号： | 1671-4512（2007）08-0112-03 |
| 修稿时间： | 2006-08-07 |
Damage model for micro-particle reinforced polymer composites |
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| Fan Jianping,Tang Chakyin,Tsui Chipong.Damage model for micro-particle reinforced polymer composites[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2007,35(8):112-114. |
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| Authors: | Fan Jianping Tang Chakyin Tsui Chipong |
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| Institution: | 1 College of Civil Engineering and Mechanics, Huazhong University of Science and Technology, Wuhan 430074, China; 2 Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong, China |
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| Abstract: | Damage mechanism plays an important role in governing the post yielding mechanical properties of these materials.Mechanical behaviour of micro-particle reinforced polymer composites(MPRPC) was investigated.The damage evolution rule was derived after the free energy and dissipating potential were hypothesized.The numerical prediction and the experiment measurement are in good agreement with the damage development.Furthermore,a damage modelling technique,in which the effect of damage and predicting the cracking phenomenon of a glass-bead-filled polyphenylene oxide(GB/PPO) composite are characterized,is presented using update Dugdale model.The results demonstrate that the damage zone has a considerable effect on the behaviour of crack tip zone. |
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| Keywords: | polymer composites damage evolution unit cell model fracture |
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