I do not know if everyone has felt that sitting in the back of the car is more violent than the front bump. What are the reasons for this? And the bumpiness of various types of vehicles is not the same. The car is more comfortable. The bumps of various buses will be very obvious. Is it because of the poor performance of the bus? Please see the following specific case analysis: First, if we do not consider the car's shock absorber system, consider the car as a rigid body to analyze the displacement of the car body during bumps: Assume that the car is driving and the front wheel presses a stone. At this moment, the rear wheel of the car was also pressed on the ground and the front of the car was tilted. At this time, the highest part of the car body is the front part of the car, the part that does not lift up is the rear wheel part, and the tail part is slightly lowered. Assume that the car is driving and the front wheel presses a stone. At this moment, the rear wheel of the car was also pressed on the ground and the front of the car was tilted. At this time, the highest part of the car body is the front part of the car, the part that does not lift up is the rear wheel part, and the tail part is slightly lowered. In this set of bumpy actions, we found: The position with the largest total displacement and the most bumpy position is in the front driver's seat and the last row in the rear. There are fewer passenger seats in the front position, so the rear seat is the main location for passenger jolts. What is the smallest position of bumps? Although sitting on the top of the wheel allows you to avoid one of the two bumps, the other bump is also very difficult. What's more, there are other problems with this position (such as being unable to reach out). The experimenter believes that the minimum position of the bump should be at the midpoint of the front and rear wheels, where the strength experienced by the two bumps is the same and is not very strong. Second, the comfort of different types of cars is different: Considering that most buses use a rear-mounted or mid-engined layout, passengers are more likely to be located in the rear of the car, so the rear axle load is usually greater than the front axle. This leads to the need for rear suspension to use stiffer elastic elements, which directly leads to the effect that the "rear seat always is overturned". The rear axle of the passenger car adopts the integral drive axle and the suspension of the leaf spring. The axle housing, the main reducer, the differential and the half shaft are all unsprung masses, so the ability to absorb road impacts is poor, resulting in poor comfort. Generally, the front and rear axle loads of the car are not significantly different. The stiffness of the front and rear suspension springs is close to each other, so the difference between the comfort of the front row and the rear row is not significant. Editor's Note: In addition to the above reasons, the rear bumper of the car is also related to the driver's driving habits. When the driver goes through bumpy roads, it slows down. After that, it accelerates. After the speed increases, it will bump even more. Shenzhen Beautiful Earth technology Co.,Ltd , https://www.siliconekeyfobcover.com