蜂窝夹芯减振板结构设计的力学参数计算

从力学性能和减振性两方面分析了用瞬间液相扩散复合法得到的蜂窝板的蜂窝结构,确定了面板厚度、芯材厚度、蜂窝格边长、蜂窝格壁厚4个结构参数作为设计变量,以剪切强度、弯曲强度、抗弯刚度、临界屈曲载荷、固有频率、质量6个性能参数为目标函数进行优化,并对优化结果进行了实验研究. 结果表明,优化设计的蜂窝板的力学性能及减振性能优于对比板,实验值与计算值基本相符.

Mechanical parameters calculation in structure design of vibration damping sandwich panels

The structure of sandwich panels bonded by brazing and transient liquid diffusion welding was analyzed from mechanical properties and vibration damping. Structure optimization of the sandwich panels was performed with the thicknesses of plate and honeycomb, and the length and thickness of honeycomb sides as the designed variables, and with shearing strength, bending strength, bending rigidity, critical bucking load, inherent frequency and mass as the objective functions. The optimized data were studied by test. Experimental results showed that the mechanical properties and vibration damping of the optimized sandwich panel were better than those of the compared sandwich panels, and the tested values were basic coincident with the calculated ones. This structure design can be used for vibration damping sandwich panels and commercial production.