Development of Vehicle Body Structure Having Maximum Shock Energy Absorption Ability

具有最大冲击能量吸收能力的车身结构的开发

• 批准号: 07555344
• 负责人: YAMAZAKI Koetsu
• 金额: $ 3.58万
• 依托单位: Kanazawa University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07555344/
• 关键词: Shock Absorption; Vehicle Body Design; Plate and Shell Structure; Structural Optimization; Dynamic Crushing

(1) Development of Optimum Design System for Absorbing Energy MaximizationA efficient new technique for structural optimization of highly nonlinear structural behavior is developed by using the technique of design-of-experiment, analysis of variance, response surface approximation and mathematical programming, without sensitivities. The validity of the developed technique is confirmed by applying to basic numerical examples of crashworthiness.(2) Maximization of Dynamic Crushing Energy Absorption of Cylinder and Square TubesThe developed technique has been applied to the maximization design problems of dynamic crushing energy absorption of cylindrical and square tubes under mass and mean crushing force constraints. From the numerical results, maximum energy absorption is attained by increase the thickness and decrease the radius and edge length as much as possible without column bucking. The effect of stiffeners to the energy absorption was also studied, and it is found that the stiffener can reduce the mean crushing force and control the crushing patterns.(3) Crushing Experiment of Energy Absorption EffectAluminum cylinders were crushed experimentally, and the absorbing energy is measured directly and compared with the results of numerical simulation. A new type of vehicle body structure is also suggested to absorb much crushing energy to prevent passengers from injury.

(1)吸收能量最大化的优化设计系统的开发利用实验设计、方差分析、响应面近似和数学规划等技术，开发了一种无灵敏度、高非线性结构行为的结构优化的高效新技术。通过耐撞性的基本数值算例验证了所开发技术的有效性。(2)圆柱和方管动态破碎吸能最大化问题所开发的技术已应用于圆柱和方管动态破碎吸能最大化设计问题。质量和平均破碎力约束下的管。从数值结果来看，通过在不发生柱弯曲的情况下尽可能增加厚度并减小半径和边长，可以获得最大的能量吸收。研究了加强筋对能量吸收的影响，发现加强筋可以降低平均压碎力，控制破碎形态。(3)吸能效果破碎实验对铝圆筒进行破碎实验，吸收能量为直接测量并与数值模拟结果进行比较。还建议采用新型车身结构来吸收大量破碎能量，以防止乘客受伤。

项目成果

K. Yamazaki, J. Han: "Maximization of Crushing Energy of Cylindercal Shells" Computer Aided Optimum Design of Structures V. 3-12 (1997)

K. Yamazaki，J. Han：“圆柱壳破碎能的最大化”计算机辅助结构优化设计 V. 3-12 (1997)

山崎 光悦・韓昌・石川 秀樹: "円筒の衝撃圧潰吸収エネルギ最大化設計に関する研究" 日本機械学会論文集A編. 64-620(印刷中). (1998)

Koetsu Yamazaki、Masa Han 和 Hideki Ishikawa：“最大化气缸冲击破碎吸收能量的设计研究”，日本机械工程师学会汇刊，A 版（1998 年出版）。

K. Yamazaki: "Sensitivity Analysis of Nonlinear Material and Its Appications to Shape Optimization" Proc. the 36th Structural structural Dynamics and Material Conterence. 1706-1713 (1995)

K. Yamazaki：“非线性材料的灵敏度分析及其在形状优化中的应用”Proc。

K.Yamazaki: "A Study on Maximization of Crushing Energy Absorption of Cylinder" Trans.of Japan Society of Mechanical Engineers. Vol.64, No.620 (to appear). (1998)

K.Yamazaki：“缸体破碎能量吸收最大化的研究”Trans.of 日本机械工程学会。

K.Yamazaki, J.Han: "Maximization of Crushing Energy Absorption of Tubes" Structural Potimization. (掲載決定). (1998)

K.Yamazaki、J.Han：“管材破碎能量吸收的最大化”结构优化（1998 年出版）。