摘要
本文从分析水听器基衬的径长、耦合振动入手,建立基衬的运动方程.然后根据边界条件求得基衬的位移、应变和应力.最后由PVDF与基衬粘接处应变连续条件和压电方程导出圆管型PVDF水听器的轴向加速度响应的数学表达式,并进行了数值计算和实验验证.理论计算与实验测试结果相吻合,
By analyzing the radial-longitudinal coupling vibration of the hydrophone's back structure, the vibrating equation of the back structure has been established.From the solution and with the boundary conditions, the displacement, strain and the stress distribution of the structure have also been derived.Based on these, according to the piezoelectric equation and to the continuity condition of the strain at the contact surface between the PVDF P polymer film and the back structure, the axial acceleration response of the cylindrical PVDF hydrophone has been developed mathematically.Experimental data are shown to support the numerical study.
关键词
聚偏二氟乙烯
水听器
水声换能器
polyvinylidenefluoride
hydrophone
underwater acoustic transducer
