摘要
为了减小火箭发射时的起始扰动,该文对复合材料定向管的刚度进行了优化设计。建立了复合材料定向管的有限元参数化计算模型。采用多岛遗传算法和序列二次规划法相结合的优化策略。将复合材料定向管有限元参数化模态计算模型集成在多学科优化设计软件iSIGHT中,实现了优化流程自动进行。以定向管支撑约束位置为设计变量,以定向管基频最大值为目标函数,对定向管刚度进行了优化设计。计算结果表明:优化设计结果使复合材料定向管的一阶固有频率提高了29%,有效减小了火箭发射时定向管口的起始振动。
In order to decrease the initial disturbance of rocket launching, an optimum design of stiffness for composite materials launching guider is studied. A parameterized finite element model of composite materials launching guider is built. A synthetic optimization algorithm of multi-island genetic algorithm and sequential quadratic programming is adopted. The automatic optimization procedure is achieved by integrating the parameterized finite element modal analysis model of composite materials launching guider into iSIGHT, a muhidisciplinary optimization design software. In the procedure of stiffness optimization, the supporting constraint location of launching guider is used as design variables and the fundamental frequency of launching guider as object function. The calculation results show that the first order natural frequency of the optimized composite materials launching guider increases 29% , reducing the initial vibration of launching guider muzzle effectively while rocket is launching.
出处
《南京理工大学学报》
EI
CAS
CSCD
北大核心
2012年第6期1042-1046,共5页
Journal of Nanjing University of Science and Technology
关键词
复合材料
定向管
刚度
优化设计
多岛遗传算法
序列二次规划法
composite materials
launching guiders
stiffness
optimum design
multi-island geneticalgorithm
sequential quadratic programming
