东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2013, Vol. 34 ›› Issue (9): 1310-1313.DOI: -

• 机械工程 • 上一篇    下一篇

聚氨酯汽车座椅H点静态平衡位置的研究

李睿，郭立新   

  1. (东北大学机械工程与自动化学院，辽宁沈阳110819)
  • 收稿日期:2013-02-26 修回日期:2013-02-26 出版日期:2013-09-15 发布日期:2013-04-22
  • 通讯作者: 李睿
  • 作者简介:李睿(1980-)，女，辽宁鞍山人，东北大学博士研究生；郭立新(1968-)，男，辽宁沈阳人，东北大学教授，博士生导师.
  • 基金资助:
    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).

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

LI Rui， GUO Lixin   

  1. School of Mechanical Engineering ＆ Automation， Northeastern University， Shenyang 110819， China.
  • Received:2013-02-26 Revised:2013-02-26 Online:2013-09-15 Published:2013-04-22
  • Contact: GUO Lixin
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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Matlabode15s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K3刚度越大，人体最终的平衡位置就越接近初始位置，K3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μ1过小，人体就会滑出座椅.

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

Abstract: 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 which the interaction between human body and seat was treated as spring model with nonlinear and viscoelastic properties. The Matlab integrodifferentialalgebraic solver ode15s was 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.

Key words: Hpoint, model for system of passenger and carseat, polyurethane foam, nonlinear and viscoelastic properties, Lagrange equation

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