THE INFLUENCE OF MAXWELL STRESS ON THE PERIODICAL CRACKS IN PIEZOELECTRIC MATERIAL

摘要：

　　The effects of Maxwell stress on semi-permeable periodical cracks in piezoelectric material under combined mechanical and electric loadings at infinity is studied.Based on the extended Stroh formalism, the closed-form expression of electric displacement in cracks, the stress and electrostatic fields and field intensity factors are obtained in a concise way.Numerical results are given to discuss the effects of Maxwell stress on the stress and electric displacement intensity factors with increasing remote loadings.Additionally, we find that when relatively big period (over four times the crack length) is adopted, one can obtain similar solutions from the case of a single crack.

关键词： Piezoelectric fracture Maxwell stress periodical cracks Semi-permeable crack Stress intensity factor

作者: Guang YANG Cun-fa GAO

作者单位: State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

会议类型: 国际会议

会议名称: The 2017 Symposium on Piezoelectricity,Acoustic Waves and Device Applications(2017全国压电和声波理论及器件技术研讨会)

会议地点: 成都

会议语种:英文

页码: 319-324

在线出版日期: 2017-10-27（万方平台首次上网日期，不代表论文的发表时间）