气囊有限元简化模型的建立及弹簧系数变化规律研究

考虑到气囊模型的特性与弹簧模型的特性相似,利用有限元法把复杂的气囊模型简化为常用的弹簧模型。弹簧系数通过作用力与位移的关系体现,其大小与气囊的内压、相互间接触位置(倾角)及直径有关。探讨了弹簧系数在不同气囊参数下的变化规律,为其在工程保障中的应用打下基础。

Study of the Simplified Finite-Element Model and the Law of Spring Coefficient Variation

Considering that the property of the gasbag model is similar to that of the spring model,the complex gasbag model is simplified to a general spring model in the light of the Finite Element Method.The spring coefficient is embodied through the relation of active force and displacement.Its magnitude relates to the internal pressure,inter-contacting location between each other（obliquity）and the diameter of the gasbags.The law of spring coefficient variation in different parameters of the gasbag is explored,which lays a foundation for the application of gasbags to engineering support.