超声速复合材料壁板颤振特性分析  

Flutter characterization analysis of supersonic composite wall plates

作　　者：王康杰 王军利[1,2] 杨哲 李金洋 刘志远 周杨 WANG Kangjie;WANG Junli;YANG Zhe;LI Jinyang;LIU Zhiyuan;ZHOU Yang(School of Mechanical Engineering,Shaanxi University of Technology,Hanzhong 723001,China;Shaanxi Key Laboratory of Industrial Automation,Hanzhong 723001,China;Shaanxi Tianhangjian Telematics Information Technology Company,Xi’an 710000,China)

机构地区：[1]陕西理工大学机械工程学院,陕西汉中723001 [2]陕西省工业自动化重点实验室,陕西汉中723001 [3]陕西天行健车联网信息技术有限公司,西安710000

出　　处：《兵器装备工程学报》2025年第3期8-15,共8页Journal of Ordnance Equipment Engineering

基　　金：陕西省重点研发计划项目(2023-YBGY-385);陕西省自然科学基础研究计划项目(2023-JC-YB-018);陕西理工大学2024年校级研究生创新基金项目(SLGYCX2413)。

摘　　要：考虑气动加热引起壁板内的热应力以及高温对材料力学性能的改变,采用一阶活塞理论计算气动力,基于Hamilton方程和虚功原理,在定常温度场推导建立了复合材料薄壁结构的热颤振有限元模型。研究热环境下不同几何形状的复合材料壁板以及复合材料铺层方式对热颤振的影响及相关机理。研究结果表明,三角形壁板的热颤振速度和频率最高,梯形壁板次之,矩形壁板的热颤振速度和频率最低;随着温度上升,3种壁板的热颤振速度和频率均呈下降趋势;三角形壁板出现热颤振模态失稳,导致热颤振曲线出现“跳跃”现象;对称正交铺层和添加非均衡角度铺层方式的热颤振速度高于非对称铺层方式;与仅改变结构的刚度相比,通过改变热颤振的耦合模态的铺层方式,可以显著增加热颤振安全裕度。This article considers the thermal stresses induced by temperature and the changes in mechanical properties of materials at high temperatures.It uses the first-order piston theory to calculate aerodynamic forces and establishes a finite element model for thermal flutter of composite thin-walled structures based on Hamilton’s equations and the virtual work principle in a steady temperature field.The study investigates the influence of different geometric shapes of composite wall panels and the arrangement of composite layers on thermal flutter,and further explores the underlying mechanisms.The research results demonstrate that the triangular wall panel exhibits the highest thermal flutter velocity and frequency,followed by the trapezoidal wall panel,while the rectangular wall panel has the lowest thermal flutter velocity and frequency.As the temperature rises,the thermal flutter velocity and frequency of all three types of wall panels decrease.The triangular wall panel experiences thermal flutter mode instability,leading to‘jumping’phenomena in the thermal flutter curve.The thermal flutter velocities of symmetric orthogonal and non-symmetric angle-ply arrangements are higher than those of non-symmetric arrangements.Compared to solely changing the stiffness of the structure,altering the arrangement of coupled modes in thermal flutter can significantly increase the margin of safety.

关 键 词：超声速 复合材料壁板 气动加热 颤振 铺层方式 

分 类 号：V215.3[航空宇航科学与技术—航空宇航推进理论与工程]