摘要
针对某异型喷管结构特点,采用实验设计(Design of experiment,DOE)中的全因子实验设计方法,建立优化数据模型,经过仿真计算和规律分析,最后使用多目标优化方法优化异型喷管结构参数,使其最大应力、最大变形及质量都取得合适值。此项研究选取异型喷管的三个主要构成因子——加强环高度、加强环厚度和喷管壁厚,经过分析这三个因子分别对该异型喷管的质量、最大应力和最大变形等响应目标的影响规律,从而得出传递函数,最终利用响应优化器求出最优解因子组合。该项研究得出:在保证强度使用要求的情况下,异型喷管的质量同比减轻24.45%。
In the light of the structural characteristics of a shaped nozzle,the optimized data model is established by using the total divisor experiment in design of experiment( DOE). Through the simulation calculation and regular analysis,the multi-objective optimization method is used to optimize the structure parameters of the shaped nozzle so that their maximum stress,maximum deformation and mass are all appropriate. Three main structure parameters of the shaped nozzle-the height of the stiffening ring,the thickness of the stiffening ring and the thickness of the nozzle wall,are selected. After analyzing their respective influence rules on the mass,maximum stress and maximum deformation,and getting the transfer function,the optimal solution factor combination is obtained by using the response optimizer. The result shows that the mass of the shaped nozzle is reduced by 24. 45% in the case of ensuring the use of strength requirements.
出处
《南京航空航天大学学报》
EI
CAS
CSCD
北大核心
2017年第S1期40-44,共5页
Journal of Nanjing University of Aeronautics & Astronautics
关键词
DOE全因子
结构优化
质量
异型喷管
传递函数
total divisor in design of experiment
structural optimization
mass
shaped nozzle
transfer function
