A theoretical study of low-velocity impact of geometrically asymmetric sandwich beams

作者：Zhang, Jianxun; Qin, Qinghua^*; Xiang, Chunping; Wang, Zhengjin; Wang, T. J.

来源：International Journal of Impact Engineering, 2016, 96: 35-49.

DOI：10.1016/j.ijimpeng.2016.05.011

• Sandwich beam
• Geometrical asymmetry
• Metal foam
• Low-velocity impact
• Overall bending

This paper uses the quasi-static method to investigate plastic behavior of fully clamped geometrical asymmetric sandwich beams with a metal foam core subjected to low-velocity impact. An analytical model is developed to predict the dynamic response of the geometrically asymmetric sandwich beams. Effects of local denting and core strength on the overall bending are considered. Good agreement is achieved between the analytical predictions and numerical results. It is demonstrated that the asymmetric sandwich beams with asymmetric factor alpha > 1 have the larger energy absorption than those with asymmetric factor 0 < alpha <1.

• 出版日期2016-10
• 单位机械结构强度与振动国家重点实验室; 西安交通大学