光敏树脂基Warren点阵结构力学性能研究

STUDY ON MECHANICAL PROPERTIES OF WARREN TRUSS LATTICE BASED ON PHOTOSENSITIVE RESIN

摘要: 通过3D打印的方式，制备了以V5韧性树脂为基材，相对密度分别为13.9%，24.0%，29.5%，34.2% 的Warren点阵结构材料。通过静载压缩以及模拟仿真的方式分析了Warren点阵结构材料的力学性能。实验结果表明，Warren点阵结构材料压缩过程分为弹性阶段，屈服阶段，坍塌阶段以及紧密阶段等四个阶段。模拟结果与实验结果具有良好的一致性。Warren点阵结构材料的弹性模量、抗压强度、归一化刚度、归一化强度等力学性能均随着相对密度的增大而上升，并且相对密度越大时，吸能性越好。

Abstract: Warren truss lattice structural materials with V5 tough resin for relative densities of 13.9%, 24.0%, 29.5% and 34.2% were prepared by 3D printing. The mechanical properties of Warren truss lattice materials are analyzed by static compression experiment and numerical simulation. The experimental results show that the compression process of Warren truss lattice materials can be divided into four stages: elastic stage, yield stage, collapse stage and compact stage. The simulation results are in good agreement with the experimental results. The elastic modulus, compressive strength, compressive stiffness coefficient and compressive strength coefficient of Warren truss lattice materials increase with the increase of relative density, and the greater the relative density, the better the energy absorption.