摘要
为了进一步优化齿轮箱加强筋的布局并降低齿轮箱的噪声,基于非线性有限元-边界元混合建模方法,构建了齿轮箱的声振耦合动力学模型,揭示了齿轮啮合频率及其倍频处为主要声辐射源,并通过板面声学贡献量分析确定下壁板为噪声主辐射区域。在此基础上,以下壁板为加强筋分布设计域,构建了以结构材料用量和加强筋厚度为约束、以法向振动速度最小化为目标的布局-尺寸双层级协同优化模型。优化结果表明,合理设计加强筋几何参数与布局方式可有效增强局部刚度、调整声传递路径,从而实现齿轮箱结构振动与噪声的显著降低。
In order to further optimize the layout of the gearbox stiffener and reduce the noise of the gearbox,this paper builds a vibro-acoustic coupled dynamic model of the gearbox using a nonlinear finite element-boundary element hybrid modeling approach.The analysis identifies the gear meshing frequency and its harmonics as the dominant sources of acoustic radiation.Through panel contribution analysis,the bottom plate of the gearbox is determined to be the primary acoustic radiation surface.Focusing on this critical region,a layout-dimension integrated optimization framework is proposed,wherein the bottom plate served as the design domain for stiffener layout.The model incorporates constraints on material consumption and stiffener thickness,and adopts the minimization of normal vibration velocity as the optimization objective.Results demonstrate that the proposed strategy-by judiciously tailoring the geometric parameters and spatial distribution of the stiffeners-not only enhances local structural stiffness but also effectively disrupts acoustic transmission pathways,thereby achieving substantial reductions in structural vibration and radiated noise.
作者
孙慧莹
王洪阳
滕晓艳
史冬岩
薛旋
徐新波
SUN Huiying;WANG Hongyang;TENG Xiaoyan;SHI Dongyan;XUE Xuan;XU Xinbo(AVIC Harbin Dongan Engine Group Co.,Ltd.,Harbin 150066,China;School of Mechanical and Electrical Engineering,Harbin Engineering University,Harbin 150001,China;Hangzhou Weiguang Electronic Co.,Ltd.,Hangzhou 310000,China)
出处
《机械工程师》
2025年第9期121-127,共7页
Mechanical Engineer
关键词
齿轮箱
声振耦合
加强筋
布局-尺寸协同优化
低噪声设计
gearbox
vibro-acoustic coupling
stiffener
stiffener layout and dimension optimization
low-noise design
