【摘要】 研究了夹芯梁在重物低速冲击下的动力计算问题。在考虑夹芯梁面板弯曲应力对夹芯梁的影响基础上，推导出了夹芯梁剪应力表达式。利用能量原理求得了夹芯梁在重物低速冲击下的动载荷系数，讨论分析了夹芯梁折减质量对动载荷系数的影响。算例分析表明，利用能量法求得的夹芯梁抗弯刚度、弯曲挠度与有关文献试验结果比较吻合。更多还原

【Abstract】 The dynamic calculation of sandwich beam under low velocity impact of heavy load is studied. Considering the effect of the bending stress of the face plate on the sandwich beam, the shear stress expression of the sandwich beam is derived. The dynamic load coefficient of the sandwich beam under low velocity impact of heavy load is obtained by using the energy principle, and the influence of the reduced mass of the sandwich beam on the dynamic load coefficient is analyzed. The calculation results show that the flexural stiffness and bending deflection of the sandwich beam obtained by energy principle is in good agreement with the experimental results in the relevant literature.更多还原