用弯曲模型推导二组元复合材料杨氏模量新公式

DEDUCING THE NEW FORMAULAS OF TWO ISOTROPIC MATERIALS COMPOSITE YONG'S MODULUS FROM BENDING MODEL

用弯曲模型推导了适用于悬丝耦合弯曲共振法检测金属第二组元的杨氏模量的理论公式 ,通过实验数据计算 ,结果表明在两组元h2 h1 ≈ 1时与文献〔2〕的计算结果几乎接近 ,为用悬丝耦合弯曲共振法检测各种减振材料、陶瓷材料杨氏模量提供了理论公式 ;同时用改进后的弯曲模型推导出了适用于纤维复合材料横向杨氏模量的预测公式。

A yong's modulus formulas which is suitable for measuring the second isotropic by dispersion wire couple bending resonance method has been deduced.The calculating shows that the result is the same as reference〔2〕 at h 2/h 1≈1.A formulas is suggested for measuring yong's modulus of vibration-damping materials and ceramic materials by dispersion wire couple bending resonance method.At the same time,a predicting formulas which is suitable for fiber composite E r has been deduced from bending model.