基于坐应力分析的弹射座椅座垫舒适性研究  

Comfort analysis on ejection seat cushion based on sitting pressure

作　　者：李先学[1] 丁立[1] 王兴伟[2] 王丽[3] 姜昌华[3] 周前祥[1] 魏仕华[4] 

机构地区：[1]北京航空航天大学生物与医学工程学院,生物力学与力生物学教育部重点实验室,北京100191 [2]空军航空医学研究所,北京100036 [3]中国航天员中心人因工程国防科技重点实验室,北京100193 [4]泰州职业技术学院机电技术学院,泰州225300

出　　处：《医用生物力学》2014年第2期131-134,145,共5页Journal of Medical Biomechanics

基　　金：国家自然科学基金资助项目(51175021)

摘　　要：目的研究弹射座椅座垫舒适性与坐应力之间的关系。方法通过测量不同厚度座椅座垫坐应力分布,探讨接触面积、最大坐应力、平均坐应力几个坐应力客观指标,并结合座垫舒适性主观量表,研究座垫舒适性与坐应力各指标间的关系。结果接触面积、最大坐应力、平均坐应力与座垫舒适性有显著相关性,而且当座垫厚度超过4 cm后,舒适性不再明显提高。结论接触面积、最大坐应力和平均坐应力能够很好地反映座垫舒适性,可以采用这些指标对座垫舒适性进行评价,并建议采用弹射座椅的座垫厚度在4 cm左右为宜。Objective To study the relationship between comfort and sitting pressure of ejection seat cushion. Methods By measuring sitting pressure distributions on seat cushions with different thickness, indices of sitting pressure such as the contact area, maximum sitting pressure and mean sitting pressure were discussed along with the subjective comfort scores to find the relationship between seat cushion comfort and indices of sitting pressure. Results The contact area, maximum sitting pressure and mean sitting pressure were significantly correlated with the subjective comfort scores. In addition, the comfort score did not increase when thickness of the seat cushion exceeded 4 cm. Conclusions The comfort of seat cushion could be well reflected and evaluated by the contact area, maximum sitting pressure and mean sitting pressure of seat cushion, and thickness of 4 cm is recommended for designing the seat cushion with material used in this paper.

关 键 词：弹射座椅 座垫 坐应力 舒适性 接触面积 

分 类 号：R318.01[医药卫生—生物医学工程]