How Can Automobiles Achieve Lightweighting?

[ManuelMarie]

To achieve lightweighting in automobiles, there are primarily three approaches: 1. Application of high-strength and lightweight materials, such as high-strength steel, ultra-high-strength steel plates, aluminum alloys, magnesium alloys, engineering plastics, and fiber-reinforced composite materials. 2. From a technical perspective, carbon fiber composites, aluminum-magnesium alloys, and advanced high-strength steel are currently the three major directions explored by automakers. These materials can replace the current mainstream low-carbon steel, achieving weight reductions of 60%, 40%, and 25%, respectively. 3. Optimizing the lightweight design of the vehicle body structure through structural analysis and technologies like CAD and CAE can reduce unnecessary materials, decrease wall thickness, and minimize the number of components. Additionally, advanced manufacturing processes such as laser welding, roll forming, hot forming of high-strength steel, and internal high-pressure forming, as well as advanced joining techniques like structural adhesive bonding and riveting of dissimilar materials, can be employed.