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|  | | 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。 | |
In this work, based on three-dimensional piezoelectric elasticity, an exact analysis of the free vibrations of a simply supported, homogeneous, transversely isotropic cylindrical panel is presented.
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| | The matrix of dielectric, piezoelectric and elastic complex coefficients of piezoelectricceramics fully characterizes the electromechanical properties of piezoelectric ceramics.How-ever, by traditional methods, such as IRE standard method or IEC recommended method,such coefficients can not be completely determined.A computer program by iterative me-thod based strictly on theoretical formula has been designed to meet the purpose.All of thereal and imaginary parts of the coefficients relevant to the electrome... | | 压电陶瓷的介电、压电、弹性复系数矩阵是它的机电性能的全面表征。但用以往的传统测量方法,如IRE标准方法或IEC推荐的方法均不能完全测定。 本文采用迭代法,从严格的理论公式出发,编制了用以计算整个复系数矩阵的计算机程序。只要分别测量了四种标准型振子导纳圆(或阻抗圆)上三个合适频率点处的导纳值(或阻抗值),用此程序,即可计算出压电陶瓷的全部机电性能系数的实部和虚部。 | | 文摘来源 | | Samples of Berlinite(α-AlPO_4) have been grown by slow heating method in autoclave. The piezoelectric constants and elastic constants have been measured by transmission method at room temperature. In addition, the influence of various defects in crystals on electric properties were studied. | | 用缓慢升温法在高压釜中生长了α-AlPO_4单晶体;用传输法测量了室温下α-AlPO_4单晶体的压电、弹性和介电常数,研究了晶体中缺陷对电性能的影响。 | | 文摘来源 | | In this paper formulas of coupling coefficients for thickness extensional and thickness shearing vibration modes along rotated axis for Lithium Niobate were obtained by Methods of matrix calculating and tensor calculating. Electromechanical coupling coefficients of three modes of vibration along rotated axis were calculated. These obtained curves possess some advantage for use of the crystals. | | 本文利用晶体的压电、弹性、介电矩阵,通过矩阵及张量运算,推导出铌酸锂晶体厚度模机电耦合系数的精确公式。并计算了任何切割点三个振动模式的机电耦合系数,所得曲线对使用这种晶体具有一定的参考意义。 | | 文摘来源 | |   | | << 更多相关文摘 |
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