一、前言随着材料科学的发展,特别是复合材料用于结构部件,由于纤维增强复合材料的E/G 值很大,一般为20≤E/G≤50左右.对各种部件或结构,在力学分析时必须考虑剪切效应.因而剪切模数G 值很重要.同时在动荷载条件下,材料的动态弹性模量与静态模量有着明显 I. INTRODUCTION With the development of materials science, especially composite materials used in structural components, due to the large E/G value of fiber-reinforced composite materials, generally 20 ≤ E/G ≤ 50 or so. For various components or structures, The shear effect must be considered in the mechanical analysis. Therefore, the value of the shear modulus G is very important. At the same time, under the dynamic load conditions, the dynamic elastic modulus of the material and the static modulus have obvious