负泊松比管状支架结构的压缩刚度特性分析OA

Negative Poisson ratio structures were widely used in engineering because of their unique structural properties,high energy absorption and good deformation adaptability.The performance optimiza-tion of tubular supports was studied with negative Poisson ratio structure in engineering applications.Com-bining structural design and mechanics analyses,the compressive performance of tubular supports was sys-tematically investigated.Based on the unique inward shrinkage deformation characteristics of negative Pois-son's ratio structures,four new tubular stent structures were designed and prepared.By analyzing the stress distribution and load displacement curve through physical compression test and numerical simulation,a multi-dimensional evaluation system was constructed including peak load,energy absorption and compres-sion stiffness.The results show that the stabilitys of FB-H structure is the best under continuous radial pressure,and the compressive strength of FB-X structure and FB-S structure are increased by 42%and 123%,respectively.Different structures show differences under axial loads.The FB-X and FB-S brackets have high rigidity and are suitable for scenarios requiring support stability.The FB-N and FB-H brackets are flexible and suitable for large deformation scenes.