摘要
在高超声速飞行的过程中,导弹舵面会出现颤振问题,可在短短几秒内导致结构破坏甚至解体.为了改善舵面颤振特性,并让设计过程更加科学和高效,结合拓扑优化技术,开发了相应的优化程序应用于导弹折叠舵结构颤振抑制设计,获得比原始设计方案拥有更大颤振临界速度的折叠舵结构.结果表明该方法具有如下优点:相比传统的配重等方法,从拓扑优化的新思路高效、准确地获得新构型;将拓扑优化的前沿技术创造性地应用到改善导弹折叠舵颤振特性的实际工程问题上,并在设计后进行强度校核;将颤振这种复杂的流固耦合问题从结构动力学问题逐步简化为静力学模型,进而用拓扑优化方法高效解决.
On the high-speed flight condition,the pucker rudder of missiles usually flutters,rendering the structure to damage even collapse abruptly.To improve the flutter characteristic of pucker rudder and make this process more scientific and efficient,the topology optimization technology is employed to develop aprogram,by which a pucker rudder structure with higher critical flutter speed is designed.The results show that the present method has several advantages.Compared with the traditional matching mass method,the present topology optimization technology can obtain a new structure efficiently and accurately.With the aid of topology optimization,the flutter characteristic of the missile＇s pucker rudder is greatly improved.By the present method,the complex fluid-solid coupling dynamic problem is transferred into a simple static problem thus can be solved more efficiently.
出处
《固体力学学报》
CAS
CSCD
北大核心
2015年第1期69-75,共7页
Chinese Journal of Solid Mechanics
关键词
折叠舵
颤振抑制
拓扑优化
pucker rudder
flutter suppression
topology optimization
