基于MMC的自修复材料结构与微胶囊的协同优化  

Collaborative Optimization of Self-Healing Material Structure and Microcapsule Based on MMC

作　　者：李鹏 张昌有 杜艺博 程文涛 占金青 唐赣 Li Peng;Zhang Changyou;Du Yibo;Cheng Wentao;Zhan Jinqing;Tang Gan(School of Mechatronics&Vehicle Engineering,East China Jiaotong University,Nanchang 330013,China;Key Laboratory of Conveyance Equipment of the Ministry of Education,East China Jiaotong University,Nanchang 330013,China)

机构地区：[1]华东交通大学机电与车辆工程学院,江西南昌330013 [2]华东交通大学载运工具与装备教育部重点实验室,江西南昌330013

出　　处：《华东交通大学学报》2023年第3期97-103,共7页Journal of East China Jiaotong University

基　　金：江西省教育厅科技项目(GJJ210631)。

摘　　要：自修复材料作为一种力学构件不仅需要结构宏观构型的拓扑优化,而且需要兼顾自修复剂载体微胶囊的尺寸和分布对自修复材料力学性能和修复效果的影响,因此对结构宏观构型与内置微胶囊进行协同优化具有重要的意义。研究基于可移动变形组件法,以结构柔度为目标函数,材料面积为约束条件,建立了内置微胶囊组件的二维数学模型,基于移动渐近线法(MMA),给出了协同优化自修复材料的设计方法,并与经典自修复材料进行了对比研究,验证了协同优化的优越性。研究表明:两类自修复材料的构型具有相似性;两类自修复材料的结构柔度均随微胶囊体积分数的增加而提高,力学性能发生不同程度的劣化;与经典自修复材料相比,随着体积分数的增加,协同优化自修复材料呈现出更为优异的力学性能,当体积分数接近14%时,其柔度值仅为经典自修复材料的66.1%。Self-healing material is usually used as a mechanical component,which not only needs to consider the topological optimization of the macro-configuration of the structure,but also the influence of the size and distribution of self-healing agent carrier microcapsules on the mechanical properties and healing effect of self-healing material.Therefore,the collaborative optimization of structural macroscopic configuration and internal microcapsules is of great significance.Based on movable morphable component,using structural compliance as the objective function,the material area as constraint condition,a two-dimensional mathematical model with built-in microcapsules component was established.Based on the method of moving asymptote(MMA),collaborative optimization design method of self-healing materials was given,and compared with the classic self-healing materials,the superiority of collaborative optimization was verified.The results show that:The configuration of two self-healing materials is similar;The structural compliance of the two kinds of self-healing materials increases with the increase of microcapsule volume fraction,and the mechanical properties deteriorated to different degrees;Compared with the classical self-healing materials,the collaborative optimized self-healing materials showed more excellent mechanical properties with the increase of volume fraction.When the volume fraction is close to 14%,the compliance of the collaborative optimized self-healing materials is only 66.1%of that of the classical self-healing materials.

关 键 词：自修复 拓扑优化 微胶囊 可移动变形组件法 

分 类 号：TB381[一般工业技术—材料科学与工程] O342[理学—固体力学]