纤维缠绕复合材料实芯球形结构单元耐撞性多目标优化  

Crashworthiness optimization of filament wound composite solid spherical structure element

作　　者：梅志远[1] 周晓松[1,2] 吴梵 MEI Zhiyuan;ZHOU Xiaosong;WU Fan(College of Naval Architecture and Ocean Engineering,Naval University of Engineering,Wuhan 430033,China;National Academy of Defense Science and Technology Innovation,Academy of Military Sciences,Beijing 100071,China)

机构地区：[1]海军工程大学舰船与海洋学院,湖北武汉430033 [2]军事科学院国防科技创新研究院,北京100071

出　　处：《国防科技大学学报》2018年第5期138-145,共8页Journal of National University of Defense Technology

基　　金：国家自然科学基金面上资助项目(51479205)

摘　　要：为了提高纤维缠绕复合材料实芯球形结构单元的耐撞能量耗散性能,在初始结构单元耐撞性分析的基础上,建立以结构单元中心承载圆柱体高径比、球形芯材短轴长轴比以及纤维缠绕复合材料表层壁厚比和缠绕角度为结构优化设计参数,以比吸能效率和冲击峰值载荷为评价指标的多目标优化模型。采用分级递进优化方法将多目标优化模型分解为两级单目标优化子模型,并通过有限元软件Abaqus得到不同子模型的碰撞响应。结合径向基函数构造近似函数模型,并采用第二代非劣排序遗传算法对结构优化设计参数进行两级递进求解,得到耐撞性能最优的结构单元。进一步开展的试验验证和破坏模式分析表明,优化设计后结构单元的耐撞吸能水平得到大幅提高,从而验证了该多目标优化分析模型的有效性。In order to improve the energy dissipation performance of the filament wound composite solid ball structure element,the maximization of the SEA(specific energy absorption)and the minimization of the IPF(impact peak force)of the structure element were chosen as the evaluation indexes.Based on the crashworthiness performance of the initial design scheme,the ratio of height to diameter for core cylinder,centrifugal rate of spherical core and filament winding thickness ratio and winding angle of composite surface were chosen as optimal design variables to establish a multi-objective optimization model.The multi-objective optimization model was decomposed into two single-objective optimization models by the hierarchical progressive optimization method.The finite element software Abaqus was adopted to compute the impact responses of the structure element with different design parameters.Furthermore,an approximate objective function was constructed with the radial basis functions,the optimal design was performed in two stages by using the second generation non-dominated sorting genetic algorithm.After the optimization,the ideal and optimal structure element was obtained for crashworthiness and energy absorption.Further experimental studies and failure modes analysis show the effectiveness of the optimization model and the improvement of the energy dissipation performance of the structure element.

关 键 词：纤维缠绕 复合材料 球形结构 耐撞性能 优化设计 

分 类 号：TB330.1[一般工业技术—材料科学与工程]