What is the difference between a monocoque body and a body-on-frame structure?

[VioletMarie]

Here are the main differences between monocoque body and body-on-frame structure: 1. The core of a body-on-frame structure is a component called the frame. The frame is usually composed of two longitudinal beams and several cross beams, running through the entire body, with high strength and torsional resistance. (1) Advantages: The frame absorbs some engine vibrations and road shocks, reducing interior noise and providing protection to the body. (2) Disadvantages: The frame is heavy and positioned high, raising the vehicle's center of gravity, which reduces stability at high speeds. The heavy frame also increases the vehicle's weight, leading to higher fuel consumption. 2. The characteristic of a monocoque body is the absence of a separate frame, with the entire body integrated into one unit. (1) Advantages: Vehicles with monocoque bodies are lighter, have a lower center of gravity, offer smoother handling, and consume less fuel. (2) Disadvantages: Due to the lack of a frame, when driving on uneven roads with uneven wheel forces, the body is more prone to deformation.