拓扑优化体心立方结构平压性能研究  

Flatwise compression property of topology optimized body centered cubic structures

作　　者：孙思远 盛亚鹏 段玥晨[1] 齐佳旗 SUN Siyuan;SHENG Yapeng;DUAN Yuechen;QI Jiaqi(School of Mechanical and Power Engineering,Zhengzhou University,Zhengzhou 450001,China;Zhumadian Cigarette Factory of China Tobacco Henan Industry Co.,Ltd.,Zhumadian 463000,China)

机构地区：[1]郑州大学机械与动力工程学院,郑州450001 [2]河南中烟工业有限责任公司驻马店卷烟厂,驻马店463000

出　　处：《复合材料科学与工程》2025年第3期7-14,共8页Composites Science and Engineering

基　　金：国家自然科学基金(52175153,U1833116)。

摘　　要：为了增强体心立方(BCC)结构平压吸能性能,采用周期边界条件和ESO拓扑优化方法,对BCC结构的周期性单胞进行了优化设计,发现拓扑优化BCC单胞的等效平压模量远优于传统BCC单胞等效平压模量。通过ABAQUS软件建立了由单胞组成的4×4拓扑优化芯子结构平压模型,对芯子进行了平压试验,将两者结果对照,证明了仿真模型的可行性。对比分析了传统结构和拓扑优化结构在平压载荷下的吸能指标,发现优化后的模型峰值力提升了79.2%,有效吸能量提升了48.5%,单位体积比吸能、单位质量比吸能提升了47.8%。基于BCC单胞的拓扑优化,使BCC单胞的等效平压模量得到较大提升的同时,也使BCC芯子结构在平压载荷下的吸能指标有更好表现。To enhance the flatwise compression property of BCC structures,an optimization design is performed using periodic boundary conditions coupled with the ESO method,and it is found that the equivalent compressive modulus of the topologically optimized BCC unit cells significantly surpasses that of traditional BCC cells.The flatwise compression simulation model of the 4×4 core structure composed of optimized unit cell is constructed in the ABAQUS software,followed by a comparative compressive experiment to demonstrate the feasibility of the simulation model.Comparison analysis between traditional structures and topologically optimized structures under compressive loads shows that the peak force in the optimized model is increased by 79.2%,and the effective energy absorption is enhanced by 48.5%.The specific energy absorption per unit volume and per unit mass is augmented by 47.8%.The optimization based on the BCC cell,not only significantly increases the equivalent compressive modulus of the BCC cells but also results in better energy absorption property under compressive loads.

关 键 词：复合材料 周期边界条件 拓扑优化 平压 能量吸收 

分 类 号：TB332[一般工业技术—材料科学与工程]