Axial compression characteristic of hollow auxetic cylinder lattice structures

A hollow auxetic cylinder lattice structure (HCLS) is proposed with tapered three-dimensional reentrant cells (TRCs) and connecting plates. The compressive performance of HCLSs is studied by finite element analysis (FEA) and compression test. HCLSs show excellent energy absorption and negative Poisson's ratio properties as well as unique rotational deformation mode during compression. The influences of structural parameters on the compression performance of HCLS are further studied. The values of the maximum rotation angle of H-h(s)2.0 and minimum negative Poisson's ratio (MPR) of H-la.3 are 37.32 degree and -0.653, respectively. HCLSs exhibit various functional properties and have great potential for application.

Automated summary

A hollow auxetic cylinder lattice structure with tapered three-dimensional reentrant cells and connecting plates is proposed. The compressive performance of the structure is studied using finite element analysis and compression test, revealing excellent energy absorption, negative Poisson's ratio properties, and unique rotational deformation mode during compression. The influences of structural parameters are further investigated, with the maximum rotation angle and minimum negative Poisson's ratio found to be 37.32 degrees and -0.653, respectively. The structure exhibits various functional properties and holds great potential for applications.