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
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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.
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.
引文
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[8] 乐增, 江楠, 杨卫国. 防波板对罐车在制动时的安全稳定性的影响[J]. 压力容器, 2012, 29(4):18-22. YUE Zeng, JIANG Nan, YANG Weiguo. Baffle influence on security and stability in braking process of tank truck[J]. Pressure Vessel Technology, 2012, 29(4):18-22
[9] 刘小民, 王星, 许运宾. 运动罐体内液体晃动的双向流固耦合数值分析[J]. 西安交通大学学报, 2012, 46(5):120-126. LIU Xiaomin, WANG Xing, XU Yunbin. Numerical simulations on liquid sloshing in the moving tank during braking of a tank truck by fluid structure interaction method[J]. Journal of Xi’an Jiaotong University, 2012, 46(5):120-126.
[10] KANDASAMY T, RAKHEJA S, AHMED A K W. An analysis of baffles designs for limiting fluid slosh in partly filled tank trucks[J]. Open Transportation Journal, 2010, 4(1):23-32.
[11] BAUER H. Coupled frequencies of a liquid in a circular cylindrical container with elastic liquid surface cover[J]. Journal of Sound & Vibration, 1995, 180(5):689-704.
[12] BAUER H F, CHIBA M. Hydroelastic viscous oscillations in a circular cylindrical container with an elastic cover[J]. Journal of Fluids and Structures, 2000, 14(6):917-936.
[13] PARASIL W, WATANABE N. Nonlinear dynamic analysis of the interaction between a two-dimensional rubberlike membrane and a liquid in a rectangular tank[J]. Aerospace Science and Technology, 2016, 56:212-222.
[14] PARASIL W, WATANABE N. Nonlinear dynamical analysis of interaction between a three-dimensional rubberlike membrane and liquid in a rectangular tank[J]. International Journal of Non-Linear Mechanics, 2016, 87:64-84.
[2] IBRAHIM R A, PILIPCHUK V, IKEDA T. Recent advances in liquid sloshing dynamics[J]. Applied Mechanics Reviews, 2001, 54(2):133-199.
[3] HU X, LI W, SUN L, et al. Liquid sloshing reduces driving stability of semi-trailer liquid tank[J]. Transactions of the Chinese Society of Agricultural Engineering, 2013, 29(6):49-58.
[4] MODARESSI-TEHRANI K. Analysis of transient liquid slosh inside a partly filled tank subjected to lateral and longitudinal[J]. Nuclear Instruments and Methods in Physics Research, 2004, 366(1):53-59.
[5] RAKHEJA S, SANKAR S, RANGANATHAN R. Roll plane analysis of articulated tank vehicles during steady turning[J]. Vehicle System Dynamics, 1988, 17(1/2):81-104.
[6] POPOV G, SANKAR S, SANKAR T S. Dynamics of liquid sloshing in baffled and compartmented road containers[J]. Journal of Fluids and Structures, 1993, 7(7):803-821.
[7] WANG Z, RAKHEJA S, SUN C Z. Influence of partition location on directional stability performance of a partially-filled tank truck[C]//Truck Safety: Perceptions and Reality, 1996.
[8] 乐增, 江楠, 杨卫国. 防波板对罐车在制动时的安全稳定性的影响[J]. 压力容器, 2012, 29(4):18-22. YUE Zeng, JIANG Nan, YANG Weiguo. Baffle influence on security and stability in braking process of tank truck[J]. Pressure Vessel Technology, 2012, 29(4):18-22
[9] 刘小民, 王星, 许运宾. 运动罐体内液体晃动的双向流固耦合数值分析[J]. 西安交通大学学报, 2012, 46(5):120-126. LIU Xiaomin, WANG Xing, XU Yunbin. Numerical simulations on liquid sloshing in the moving tank during braking of a tank truck by fluid structure interaction method[J]. Journal of Xi’an Jiaotong University, 2012, 46(5):120-126.
[10] KANDASAMY T, RAKHEJA S, AHMED A K W. An analysis of baffles designs for limiting fluid slosh in partly filled tank trucks[J]. Open Transportation Journal, 2010, 4(1):23-32.
[11] BAUER H. Coupled frequencies of a liquid in a circular cylindrical container with elastic liquid surface cover[J]. Journal of Sound & Vibration, 1995, 180(5):689-704.
[12] BAUER H F, CHIBA M. Hydroelastic viscous oscillations in a circular cylindrical container with an elastic cover[J]. Journal of Fluids and Structures, 2000, 14(6):917-936.
[13] PARASIL W, WATANABE N. Nonlinear dynamic analysis of the interaction between a two-dimensional rubberlike membrane and a liquid in a rectangular tank[J]. Aerospace Science and Technology, 2016, 56:212-222.
[14] PARASIL W, WATANABE N. Nonlinear dynamical analysis of interaction between a three-dimensional rubberlike membrane and liquid in a rectangular tank[J]. International Journal of Non-Linear Mechanics, 2016, 87:64-84.