首页> 外文期刊>International Journal of Fracture >AN ELECTRICALLY CHARGED CRACK IN A PIEZOELECTRIC MATERIAL UNDER REMOTE ELECTROMECHANICAL LOADING
【24h】

AN ELECTRICALLY CHARGED CRACK IN A PIEZOELECTRIC MATERIAL UNDER REMOTE ELECTROMECHANICAL LOADING

机译:远程机电载荷作用下压电材料的带电裂纹

获取原文
获取原文并翻译 | 示例
           

摘要

The problem of electrically charged crack in a piezoelectric material under the action of remote electromechanical load is considered. The material is polarized in the direction orthogonal to the crack faces. Assuming that all fields are independent of the coordinate co-directed with the crack front and using the special presentations of electromechanical quantities via sectionally-analytic function, the problem is reduced to the vector Hilbert problem and solved exactly. All required electromechanical quantities are presented by means of simple formulas. The behavior of stresses, electric field and electric displacement jump are analyzed. It is shown that the electric charge can eliminate the field singularities at one of the two crack tips. The proposed solution, together with the presented table of parameters for some widely used piezoceramics materials, like PZT-4 and many others, can be easily used by the reader for an engineering calculation of the near-crack-tip electromechanical fields in these materials.
机译:考虑了在远距离机电载荷作用下压电材料中带电裂纹的问题。材料在垂直于裂纹面的方向上极化。假定所有场都独立于与裂纹前沿共同指向的坐标,并通过截面分析函数使用机电量的特殊表示,则该问题可简化为向量希尔伯特问题,并得以精确求解。所有所需的机电量均通过简单的公式表示。分析了应力,电场和位移位移的行为。结果表明,电荷可以消除两个裂纹尖端之一处的场奇异性。对于一些广泛使用的压电陶瓷材料(例如PZT-4等),所提出的解决方案以及所提供的参数表可以很容易地被读者用来对这些材料的近裂纹尖端机电领域进行工程计算。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号