有限元法对车载钢制天然气瓶疲劳分析

该文首先系统地阐述了基于疲劳损伤理论的气瓶寿命的计算方法;再针对车用钢制天然气气瓶使用过程中会对气瓶强度产生影响的因素进行探讨;最后在某型车用气瓶强度分析的基础上依据损伤理论以及计算方法给出了该型气瓶的使用寿命情况,同时也系统地分析了一些使用因素对气瓶寿命的影响。该计算方法与分析过程可以为车用天然气气瓶的安全使用以及检测提供理论基础和依据。

This paper systematically expounded cylinder life calculation method based on the theor y of fatigue damage;In the process of the use of steel for the vehicle,the factors af fecting the strength of the cylinder are discussed;Finally on the basis of a certain t ype of car cylinder strength analysis,According to the damage theory and calculation method,the service life of this type of cylinder is given,The inf luence of some factors on the life of the cylinder is also analyzed.The calculation method and analysis process can provide a theoretical basis and foundation for the CNG cylinders for safe use and testing.