Title of Paper:Multilevel Bionic Modelling and Optimization Techniques

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Affiliation of Author(s):机电学院

Journal:Zhongguo Jixie Gongcheng

Abstract:Aimmed at the non-coexistence problems between high hardness and high fracture of the objects produced by additive manufacturing methods. Inspired by the multilevel structures in nature, a multilevel lattice structure modeling methodology was proposed. Firstly, a family of multi lattices with specific mechanical properties was established. Secondly, different lattices were filled in multistage space. Isosurface geometry modeling algorithm was used to achieve transitional connection between the lattices and gradient design. Thirdly, the FEA (finite element analysis) results were used to actuate the porosity and size of lattice structures by using image mapping method. An object which could satisfy biomechanics properties was obtained through multiple iterations. Finally, the experimental results validate this method may well control the elastic modulus and impact toughness. Moreover, this method was applied to the design of teeth, and achieves good results. © 2019, China Mechanical Engineering Magazine Office. All right reserved.

ISSN No.:1004-132X

Translation or Not:no

Date of Publication:2019-05-10

Co-author:Yu, Changjiang,Li, Dawei,Cheng xiao sheng

Correspondence Author:dn