聚氨酯汽车座椅H点静态平衡位置的研究  

Research on Static Equilibrium Position of the H-point for Polyurethane Foam Car-Seat

作　　者：李睿[1] 郭立新[1] 

机构地区：[1]东北大学机械工程与自动化学院,辽宁沈阳110819

出　　处：《东北大学学报（自然科学版）》2013年第9期1310-1313,共4页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(51275082;51135003);教育部高等学校博士学科点专项科研基金资助项目(20100042110013);中央高校基本科研业务费专项资金资助项目(N110403008)

摘　　要：为了研究以聚氨酯泡沫为材料的汽车座椅H点的位置,创建了一个简化的二维人椅系统模型,人体与座椅之间的作用力建模为具有非线性黏弹性的弹簧.对此模型采用可变阶的运动微分方程Matlab ode15s求解器,求解出人椅系统的平衡位置.结果表明:材料越硬,静态平衡位置越接近泡沫材料未压缩时的人体初始位置;弹簧K3刚度越大,人体最终的平衡位置就越接近初始位置,K3越向前移动,人体就会越陷入座椅中;人体与坐垫之间的摩擦系数μ1过小,人体就会滑出座椅.A simplified 2D model for system of passenger and car-seat was created in order to study the H-point of polyurethane foam car-seat,in w hich the interaction betw een human body and seat w as treated as spring model w ith nonlinear and viscoelastic properties.The Matlab integrodifferential-algebraic solver ode15s w as used to solve equilibrium position of the passenger and car-seat model.The results show that the harder the material is,the closer the static equilibrium position is to the initial position of human body before the foam compressed.The larger the K 3 spring stiffness is,the final equilibrium position of the body is more close to the initial position.The more forward K 3 is moving,the body will be more slip into the seat.If μ 1,the coefficient of friction between human body and cushion,is too small,body tends to slip out of seat.

关 键 词：H点 车辆人椅系统模型 聚氨酯泡沫 非线性黏弹性特性 拉格朗日方程 

分 类 号：U461.1[机械工程—车辆工程]