基于Pareto遗传算法的腹板梁结构抗屈曲疲劳优化设计研究  

RESEARCH ON OPTIMAL DESIGN OF PLATE-WEB BEAM STRUCTURE AGAINST FATIGUE BUCKLING BASED ON PARETO GENERAL ALGORITHM

作　　者：苏少普[1] 徐广涛[2] 董登科[1] 陈安[1] SU ShaoPu;XU GuangTao;DONG DengKe;CHEN An(Third Department,Avic Aircraft Strength Research Institute,Xi'an 710065,China;School of Mechanical Engineering,Zhengzhou University,Zhengzhou 450001,China)

机构地区：[1]中国飞机强度研究所三室,西安710065 [2]郑州大学机械工程学院,郑州450001

出　　处：《机械强度》2018年第6期1371-1376,共6页Journal of Mechanical Strength

基　　金：航空科学基金(2016ZA23011)资助~~

摘　　要：依据疲劳分析中的细节疲劳额定值法,提出一种基于遗传算法的腹板梁结构抗屈曲疲劳的优化设计模型。通过有限元计算及试验分析,采用半经验方法建立结构屈曲疲劳分析模型,并应用遗传算法进行优化计算,获取了质量最小情况下结构疲劳寿命最高的结构设计方案,优化后理论分析的腹板梁结构屈曲疲劳寿命比初始结构寿命有了显著提高,为通用飞机结构减重提供设计依据。In virtue of Detail Fatigue Rating method (DFR),an optimization design method of aircraft plate-web beam structure against fatigue buckling is proposed based on genetic algorithm.After finite element,analysis and experimental verification,an optimized model of structure life on fatigue buckling is built by engineering method,and the structure design solution in the condition of minimum mass is achieved with maximum fatigue life.The theoretical results illustrated that the life can excessively increase than that of the original beam.This technology will provide the design strategy of reducing aircraft mass and cost production for general aircraft structure.

关 键 词：屈曲疲劳 临界屈曲载荷 Pareto遗传算法 细节疲劳额定值 

分 类 号：V215.52[航空宇航科学与技术—航空宇航推进理论与工程]