基于能量法的泡沫铝Taylor杆动态特性研究

Dynamic Characteristics Analysis on Aluminum Foam of Taylor Rod Based on Energy Method Formula

  • 摘要: 泡沫铝因具有密度低、耐高温、能量吸收高等优异的物理及力学性能而被广泛应用于航空、航天等领域。由于多孔材料的可压缩性,经典Taylor杆理论无法适用,该文在一定假设基础上,基于能量法分析Taylor冲击下多孔材料弹体的塑性变形特征,建立了Taylor冲击下多孔材料弹体的塑性变形分析模型,并通过泡沫铝Taylor冲击试验数据验证了模型的有效性。研究结果可以为多孔材料物理及力学性能结构参数的优化设计提供指导。

     

    Abstract: The Aluminum foam is widely used in aerospace field for it has excellent physical and mechanical properties such as low density, high temperature resistance and good energy absorption, etc. Due to the compressibility of porous materials, the classical Taylor rod theory cannot be applied. On the basis of certain assumptions, the plastic deformation characteristics of the porous material elastic body under Taylor impact are analyzed by using the energy method formula in this paper. Then, the plastic deformation analysis model of porous material elastic body under Taylor impact is constructed, and validity of the model is verified through the data of aluminum foam Taylor impact tests. The results can provide guidance for optimization design of the physical and mechanical properties and structural parameters of porous material.

     

/

返回文章
返回