Tank vehicles rollover threshold acceleration under fluid sloshing considering the method of mapping

According to the importance of tank vehicles in carrying liquid and fuel and also low levels of rollover threshold, studying effects of baffles on the stability and dynamic behavior of the vehicles are very important. In this paper, in order to investigate the lateral acceleration of the tank vehicle as well as the transient response, the mapping method is applied to convert circular cross section into rectangular strip. The mechanical spring-mass model is used to analyse the sloshing model. Then, the the modal masses are obtained. Using the baffles decreases the free surface elevation as well as the forces and moments acting on the walls of the container. Horizontal baffles reduce lateral forces to a greater degree in comparison to vertical baffles. In horizontal baffle the maximum rollover threshold acceleration occurs in the 50% filling and baffle length of L/d=0.01 for two time t=1.95s and t=3.65s. and the value is constant in ay=0.439(g) for other times . Also in the surface-01 piercing vertical baffle, the maximum rollover threshold acceleration of the 50% filling and length of baffle L/d=0.99 is ay=0.45(g).