Mesoscale simulation on the shock response of functionally graded Al-PTFE material

Abstract In this paper, the shock response of functionally graded Al-PTFE granular composites is firstly investigated by means mesoscale simulations. A tailored arrangement filler infiltrated with matrix to study effects density gradient on mechanical and chemical characteristics material under impact loading. Based wave propagations, noticeable differences among pressure, temperature, strain are visualized at grain-level. Results demonstrate that higher pressure concentrated in front decrease over time. Moreover, a much greater energy-releasing deformation exhibit along grain/matrix interfaces. Compared uniform reactive material, decreased has initial velocity propagation, sample increased superior capability attenuation, level hot-spots concentration.