固体火箭发动机多层结构参数变化对Lamb波的影响  

The Effect of Solid Rocket Motor Multi-layer Structure Parameter Change on Lamb Wave

作　　者：郭旭飞[1,2] 韩焱 GUO Xufei;HAN Yan(Shanxi Key Laboratory of Signal Capturing&Processing,North University of China,Taiyuan 030051,China;Luliang University,Shanxi Lvliang 033001,China)

机构地区：[1]中北大学信息探测与处理山西省重点实验室,太原030051 [2]吕梁学院,山西吕梁033001

出　　处：《弹箭与制导学报》2021年第4期108-112,共5页Journal of Projectiles,Rockets,Missiles and Guidance

基　　金：山西省自然科学基金(201801D121156,201901D111165);国防重点实验室基金(6142001200406);信息探测与处理山西省重点实验室开放基金(ISTP2020-8)资助。

摘　　要：为预测固体火箭发动机多层结构间的粘结质量与发动机燃烧过程中药柱厚度的变化情况,应用半解析有限元法,分别对固体火箭发动机3种不同界面黏接质量的兰姆波频散曲线进行了求解。结果表明,当胶层质量相对变差时,频散曲线整体向左漂移。而当药柱厚度大于100 mm以后,频散曲线不再发生变化。药柱厚度从100 mm逐渐递减到0 mm的过程,频散曲线的整体向右漂移,且阶数越来越少,低阶模态波变化明显。In order to predict the bonding quality between the solid rocket motor multilayer structure and the change of the grain thickness during the combustion process of the engine,the semi-analytical finite element method is applied to solve the Lamb wave dispersion curves of the three different interface bonding qualities of the solid rocket motor.The results show that when the quality of the adhesive layer is relatively poor,the overall dispersion curve drifts to the left.When the thickness of the grain is greater than 100 mm,the dispersion curve no longer changes.As the thickness of the grain gradually decreases from 100 mm to 0 mm,the overall dispersion curve drifts to the right,and the number of orders decreases,and the low-order modal waves change significantly.

关 键 词：固体火箭发动机 药柱 半解析有限元法 兰姆波 频散曲线 

分 类 号：V435[航空宇航科学与技术—航空宇航推进理论与工程]