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| 压电功能梯度材料裂纹端部场分析 | |
| 引用本文： | 朱再思,刘忠和,庞帅,孙军,陈金凤,刘立新.压电功能梯度材料裂纹端部场分析[J].石油机械,2003,31(8):9-12. |
| 作者姓名： | 朱再思 刘忠和 庞帅 孙军 陈金凤 刘立新 |
| 作者单位： | 1. 江汉机械研究所 2. 长庆石油勘探局机械制造总厂 3. 大港油田分公司第一采油作业区 |
| 基金项目： | 国家自然科学基金(项目号:A10102006,立项时间:2002年1月) |
| 摘 要： | 功能梯度材料作为一种新型材料,其性能优于单一材料。在石油工业中,由于单一材料并不能很好地满足工业的需求,而这种新型材料恰好弥补了这一缺陷与不足。同时,材料的断裂问题是任何机械工业中所不可避免的。鉴于此,借助有限元方法,对压电功能梯度材料的裂纹端部场进行了详细分析。主要研究力、电耦合载荷作用下,裂纹在梯度材料中的位置以及裂纹深度对裂纹端部应力的分布及其大小的影响。 |
| 关 键 词： | 功能梯度材料 石油工业 裂纹端部场 |
Analysis of crack tip field in piezoelectric functionally graded materials |
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| Zhu Zaisi.Analysis of crack tip field in piezoelectric functionally graded materials[J].China Petroleum Machinery,2003,31(8):9-12. | |
| Authors: | Zhu Zaisi |
| Abstract: | As one of the most advanced materials, the functionally graded materials has better properties compared with the homogenous material. The new material can meet the need of use in petroleum industry, while the homogenous material is hard to find good use in this sector. In addition, the fracture problems inevitably exist in various industry fields. The current study investigates the crack tip field of piezoelectric functionally graded materials by using the finite element method. The influences of the crack location and crack length on the stress field of the crack tip under the action offerees and electric coupling loading are studied. |
| Keywords: | Subject Concept Terms functionally graded material petroleum industry crack tip field |
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