带筋壁板筋条双侧激光喷丸成形研究  

Investigation on Laser Peen Forming at Double Sides of Stiffeners in Stiffened Panel

作　　者：李宝旺 唐鑫森 王印博 江剑成 胡永祥[2] LI Baowang;TANG Xinsen;WANG Yinbo;JIANG Jiancheng;HU Yongxiang(CRRC Tangshan Co.,Ltd.,Tangshan 064000,China;State Key Laboratory of Mechanical System and Vibration,School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]中车唐山机车车辆有限公司,河北唐山064000 [2]上海交通大学机械与动力工程学院,机械系统与振动国家重点实验室,上海200240

出　　处：《电加工与模具》2024年第1期46-51,共6页Electromachining & Mould

基　　金：国家自然科学基金项目(U21A20135)。

摘　　要：带筋壁板能显著提高飞行器的结构效率与气密性,是现代航空航天飞行器广泛采用的结构形式,而激光喷丸成形作为新型无模柔性成形工艺,是带筋壁板成形的有效工艺途径。带筋壁板的可喷丸区域包括筋条双侧与内外侧蒙皮,考虑筋条双侧喷丸可精确调控带筋壁板的几何形状,首先对带筋壁板筋条双侧激光喷丸的变形特征进行分析,并基于激光喷丸固有应变理论推导筋条双侧喷丸等效弯矩解析公式,进而建立筋条双侧喷丸等效弯矩数值模型。研究表明,建立的等效弯矩模型可为筋条双侧喷丸的带筋壁板激光喷丸成形的变形预测与工艺规划提供有效途径。Stiffened panels can significantly improve the structural efficiency and airtightness of aerospace aircraft,and they are widely used structural forms in modern aerospace vehicles.Laser peen forming(LPF)is a novel flexible forming process without requiring expensive dies,and it is desired for producing stiffness panels.Besides conducting laser peening(LP)on the skin,performing LP on both sides of the stiffener will contribute to precise control of panel geometry.Based on it,the study investigated the deformation characteristics of LP on the both sides of the panel stiffener,and the eigenstrain theory was used to derive an analytical formula for the equivalent bending moment induced by double-sided LP on the stiffener.Subsequently,a numerical model of the equivalent bending moment was developed to efficiently predict the bending deformation of the double-sided LP on the stiffeners.The result indicated that the proposed equivalent bending moment model may serve as an effective tool for deformation prediction and process planning of LPF for stiffened panels.

关 键 词：带筋壁板 激光喷丸成形 激光喷丸 等效弯矩 

分 类 号：TG665[金属学及工艺—金属切削加工及机床]