长圆形囊式气囊隔振器由于其横纵向结构不同的特点，适用于某些回转形气囊隔振器无法安装使用的场合。根据长圆形气囊隔振器的结构特点，通过模型分析及理论推导得到了其有效面积表达式；结合气体多变方程，提出了一种长圆形气囊隔振器的垂向刚度表达式；根据所得表达式，分析了长圆形气囊隔振器垂向刚度的影响因素；为验证理论模型准确性，试制了相应样机，并开展了相关静、动刚度试验。试验结果表明：长圆形囊式气囊隔振器刚度理论计算结果与试验结果相对误差较小，理论模型精确度较高。
Abstract
Due to its feature of different longitudinal structure and lateral one, a long round bellow type airbag isolator is suitable for some places of rotary airbag isolators being not able to be installed. According to its structural characteristics, its effective area expression was obtained with model analysis and theoretical derivation. Combined with the gas multi-variate equation, the vertical stiffness expression for a long round bellow type airbag isolator was proposed. According to obtained expressions, factors affecting the isolator’s vertical stiffness were analyzed. In order to verify the correctness of the theoretical model, the corresponding prototype was fabricated to conduct relevant static and dynamic stiffness tests. Test results showed that the relative error between theoretical calculation results and test ones is smaller; the proposed theoretical model has a higher accuracy.
关键词
气囊隔振器 /
有效面积 /
垂向刚度 /
试验
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Key words
airbag isolator /
effective area /
vertical stiffness /
test
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