基于ANSYS/LS-DYNA的移动式压力容器动态碰撞仿真分析

Dynamic Impact Simulation Analysis for Mobile Pressure Vessel Based on ANSYS /LS-DYNA

运用有限元和瞬态动力学的有关理论和方法对移动式压力容器受碰撞后的安全性进行了研究。首先采用三维建模软件建立了移动式压力容器运输车的实体模型,然后分别利用有限元分析软件ANSYS和瞬态动力学仿真软件LS-DYNA对模型进行前处理分析和求解计算,分别得到车速为60 km/h车尾受到碰撞时车架、压力容器罐体、组合支座及相关辅件的动态碰撞应力响应情况。计算结果表明:车架及连接螺栓失效,但有效降低了对压力容器罐体的冲击,基本保证了其安全性,并为今后的优化设计提供了理论支撑。

The theories and methods of finite element and transient dynamics are used to study the safety of post-collision mobile pressure vessel. The physical model of mobile pressure vessel transporter is established by using Solidworks 3D-modeling software,and then pre-treat analyses are performed by ANSYS finite element anal- ysis software and LS-DYNA transient dynamic software. The dynamic impacting stress response of vehicle frame,pressure vessel, combined supports and other auxiliary components is obtained at the speed of 60 km/h. The re- suits show that though vehicle frame and connecting bolts are destroyed, the impact to pressure vessel is effec- tively decreased. The safety of pressure vessel is guaranteed and these analyses provide theoretical supports for fu- ture optimization design.