摘要
基于鼓形面拟合双曲率车门玻璃的原理,提出了基于双曲率玻璃参数化模型的优化方法;结合梯度算法优化得出最佳的鼓轴位置以及最优的鼓形面,并模拟出鼓形双曲率玻璃在导轨中的运动,优化后玻璃的拟合及运动误差都控制在0.5mm以内,满足工程设计要求。针对鼓形双曲率玻璃的复杂运动轨迹,传统的二维摩擦作用建模已经无法满足空间约束下的运动阻力分析;利用非线性弹簧模拟车窗密封系统非线性夹持约束,建立车窗密封系统仿真模型,提取升降摩擦力,为后续优化设计提供参考。
Based on the theory of drum surface fitting the dual-curvature glass, a optimization method of dual-curvature glass parameter model was proposed. Gradient arithmetic was used to create the best drum axis and the drum surface which was closest to the a surfaces. The movement of the dual-curvature glass was imitated. The error after the optimization was below 0.5mm, which shows that the optimizing method can meet the needs of the design precision of dual-curvature glass. Facing complex motion trail of dual-curvature glass, conventional 2D model can not satisfy movement analysis under spatial constraint. The window sealing model was constructed by using non-linear spring for modelling nonlinear constraint. Friction was extracted from the simulation result, which provides a referenee for subsequent optimization design.
出处
《机械设计与制造》
北大核心
2017年第12期7-10,13,共5页
Machinery Design & Manufacture
基金
国家自然科学基金项目(51305269)
关键词
鼓形面
双曲率玻璃
优化设计
非线性弹簧
车窗密封
摩擦力
Drum Surface Dual--Curvature Glass
Optimization Design
Nonlinear Spring
Window Sealing
Friction
