Analysis and optimization of impact energy absorption performance of mine refuge chamber filled with concave triangular negative poisson's ratio material

In this paper, negative poisson's ratio material is used to fill the interlayer of mine refuge chamber, and its characteristics such as light weight, thermal insulation, vibration isolation impact resistance are improve insulation ability chamber. The equivalent density, elastic modulus yield strength structure Q345 were obtained by simulation analysis. was filled into energy absorption explosion transient analysis carried out. results show that compared with prototype, maximum inner skin temperature chamber reduced 44.86%, transverse longitudinal stiffeners nearly 46.77%, deformation 35mm, which has better safety performance. response surface optimization method optimize whole material, more secure than before.