论文部分内容阅读
汽车前保险杠吸能盒是重要的缓冲吸能结构,在整车发生正面碰撞时通过塑性变形吸收碰撞产生的能量。基于液压成形管件重量轻、刚度和强度高、耐撞性能好等优点,设计液压成形吸能盒替代原始冲压焊接结构。采用数值模拟方法分析吸能盒设计中关键吸能特性指标,如最大压垮载荷、总吸能、平均压垮载荷和比吸能等,对比原始冲压吸能盒和改型液压成形吸能盒在缓冲吸能方面的能力,并通过落锤冲击试验验证。成功研制出质量轻、耐撞性好的液压成形吸能盒。
The front bumper energy-absorbing box is an important buffer energy-absorbing structure that absorbs the energy generated by the collision through plastic deformation in the event of a frontal collision of the vehicle. Based on the advantages of light weight, high stiffness and strength, and good crashworthiness of hydroformed tubes, a hydroformed box is designed to replace the original stamping welded structure. Numerical simulation method is used to analyze the key energy-absorbing properties such as maximum crush load, total energy absorption, average crush load and specific energy absorption in the energy-absorbing box design. Compared with the original energy- Absorption capacity in the buffer, and by drop hammer impact test verification. Successfully developed a light weight, crashworthiness of the hydroformed box.