柔弹性复合点阵结构面内剪切性能及交互机制研究

doi:10.3969/j.issn.1004-132X.2025.05.022

中国机械工程 ›› 2025, Vol. 36 ›› Issue (05): 1103-1110.DOI: 10.3969/j.issn.1004-132X.2025.05.022

柔弹性复合点阵结构面内剪切性能及交互机制研究

牛国法¹;纪小刚^1,2*;王炜¹;王广阳¹

1.江南大学机械工程学院，无锡，214122
2.江苏省食品先进制造装备技术重点实验室，无锡，214122

出版日期:2025-05-25 发布日期:2025-06-27
作者简介:牛国法，男，1999年生，硕士研究生。研究方向为CAD/CAM、点阵结构等。发表论文2篇。E-mail：niu1999tt@163.com。
基金资助:
国家自然科学基金(52175234,51105175);江苏省“六大人才高峰”项目(JXQC-006)

Study on In-plane Shear Behavior and Interaction Mechanism of Flexible Elastic Composite Lattice Structures

NIU Guofa¹;JI Xiaogang^1,2*;WANG Wei¹;WANG Guangyang¹

1.School of Mechanical Engineering,Jiangnan University,Wuxi,Jiangsu,214122
2.Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment Technology,Wuxi,
Jiangsu,214122

Online:2025-05-25 Published:2025-06-27

摘要/Abstract

摘要： 通过试验和数值模拟对复合点阵结构在面内剪切载荷状态下的剪切性能和交互机制进行研究。试验分析了基体体心立方（BCC）结构的损伤失效历程和失效方式；以BCC单胞结构为基体，采用结构嵌合的方式探寻嵌合结构杆径对复合结构剪切强度和剪切模量的影响规律；最后通过面心立方（FCC）结构的试验验证了有限元分析的可靠性，探究了FCC-BCC结构在面内剪切载荷下的交互机制。试验结果表明，结构之间的嵌合增强了复合点阵结构的承载能力，同时结构的嵌合会影响复合结构的应变；当结构杆径尺寸均为0.45 mm时，FCC-BCC和简单立方体心立方（SC-BCC）的极限剪切强度相比于基体本身分别提高了159%和80%。

关键词: 组织工程支架, 点阵结构, 柔弹性树脂, 剪切模量, 交互效应

Abstract: The shear behavior and interaction mechanism of composite lattice structures were studied under in-plane shear loads by tests and numerical simulations. The damage failure courses and failure modes of matrix body centered cube(BCC) structures were analyzed experimentally. Using BCC cell structure as matrix, the influences of the diameter of chimeric structures on shear strength and shear modulus of composite structures were investigated by means of chimeric structure. Finally, the reliability of finite element analysis was verified by face centered cubic(FCC) structure tests, and the interaction mechanism of FCC-BCC structures was explored under in-plane shear loads. The testing results show that the mosaicism amang structures enhances the bearing capacity of the composite lattice structures, and influences the strains of the composite structures. The ultimate shear strength of FCC-BCC and simple cube-body centered cube(SC-BCC) are as 159% and 80% higher than that of the matrix respectively when the diameter size of the structural rods are both 0.45 mm.

Key words: tissue engineering scaffold, lattice structure, flexible elastic resin, shear modulus, interaction effect

中图分类号:

牛国法1, 纪小刚1, 2, 王炜1, 王广阳1. 柔弹性复合点阵结构面内剪切性能及交互机制研究[J]. 中国机械工程, 2025, 36(05): 1103-1110.

NIU Guofa1, JI Xiaogang1, 2, WANG Wei1, WANG Guangyang1. Study on In-plane Shear Behavior and Interaction Mechanism of Flexible Elastic Composite Lattice Structures[J]. China Mechanical Engineering, 2025, 36(05): 1103-1110.

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https://www.cmemo.org.cn/CN/Y2025/V36/I05/1103

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柔弹性复合点阵结构面内剪切性能及交互机制研究

Study on In-plane Shear Behavior and Interaction Mechanism of Flexible Elastic Composite Lattice Structures

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