带弹性膜的部分充液罐车罐体内液体横向晃动的瞬态响应分析  

Liquid slosh in a partially filled liquid tank truck with an elastic membrane

作　　者：王琼瑶 Subhash Rakheja 上官文斌[1] WANG Qiongyao;RAKHEJA Subhash;SHANGGUAN Wenbin(School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou 510640,China)

机构地区：[1]华南理工大学机械与汽车工程学院,广州510640

出　　处：《振动与冲击》2019年第5期98-105,共8页Journal of Vibration and Shock

基　　金：国家自然科学基金(51475171);广东省自然科学基金(6140310)

摘　　要：针对部分充液罐车转向过程中罐体内液体的晃动问题,提出了一种新型抑制液体晃动的阻尼装置:弹性膜。建立了相应的罐体内带弹性膜的流体-弹性膜耦合动力学模型,并通过实验验证了模型的有效性。通过计算仿真方法研究了弹性膜及其预应力的大小对液体瞬态时的晃动力和载荷转移量的影响。研究结果表明:弹性膜能限制液体的晃动幅值,从而减小液体晃动时对罐体壁面产生的侧倾力矩;弹性膜增大了液体横向晃动的固有频率,使液体横向晃动的固有频率远离了液罐车的紧急转向频率,从而避免了液罐车紧急转向时共振现象的发生。An elastic membrane taken as a new anti-slosh device was proposed for a partially filled liquid tank truck in steering process.In the corresponding tank,the liquid-elastic membrane coupled dynamic model was established.The effectiveness of the dynamic model was verified with tests.The effects of elastic membrane and its pre-stress on liquid sloshing force and load transfer quantity were studied through numerical simulation.The results showed that elastic membrane can limit liquid slosh amplitude to reduce the roll moment caused by liquid sloshing on tank wall;elastic membrane can increase liquid slosh’s natural frequency to be far away from the emergency steering frequency of tank truck,so as to avoid the occurrence of resonance phenomenon in emergency steering of liquid tank truck.

关 键 词：液罐车 液体晃动 弹性膜 流固耦合 

分 类 号：O359.1[理学—流体力学]