Design And Analysis Of Kirigami Structure

Kirigami brings new inspiration to the structure design.Physical properties of the raw material can change significantly with its topology changing,especially in the aspects of mechanics,acoustics and optics.The design that only changes its structure form without changing its chemical composition,provides a clear direction for the development of new materials.In this paper,the Kirigami structures were studied in mechanics and acoustics.Firstly,the numerical model of Pyramid-Kirigami was established to deduce the relationship between load and displacement.In order to verify the feasibility of the numerical model,nine cases were analyzed by changing geometric or material properties,and then the results were compared with those obtained from the simulation analysis of ABAQUS.Based on the Kirigami structure,the self-assembly of the three dimensional structure driven by magnetic field was simulated in COMSOL.And it was found that with the change of magnetic field intensity,the two dimensional can be transformed into three dimensional structure smoothly.Then,the negative Poisson's ratio material and its band-gap property were studied.Because the negative Poisson's ratio property of this kind of structure was closely related to the geometric parameters,here,the relationship model between the geometric parameters and the Poisson's ratio function was established.And the analytical results were compared with the result of finite element analysis to verify the correctness of the mathematical model.Considering that periodic structure often had band-gap properties,the effects of geometric parameters on band-gap properties were studied.If the structure with band-gap property,arraying them periodically and applying the different frequencies of excitation along the X direction,in order to observe its vibration isolation performance.