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Research on Dual-Trapezoid Curve Construction of Automobile Collision Acceleration Based on Feature Parameter Extraction

机译：基于特征参数提取的汽车碰撞加速度双梯形曲线构建研究

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摘要

Automobile collision acceleration is an important parameter that directly reflects the collision process of automobile. It is closely related to occupant injury and widely used in the design of automobile safety structure. Usually the collision acceleration waveform is simplified into dual-trapezoid curve, in order to analyze the relationship between automobile body structure and occupant injury. However, the construction of dual-trapezoid curve relies mainly on the subjective experience of technicians, which limits the popularization and practical application of dual-trapezoid curve. On the basis of ensuring that the real vehicle collision waveform and the dual-trapezoid curve are equivalent in terms of operation time and energy, this paper proposes a feature parameter extraction method based on real vehicle collision waveform, which can simplify the complex and ever changing collision acceleration waveform into dual-trapezoid curve in parameters. And it also conducts trolley contrast test on the original waveform and dual-trapezoid curve, and injury response and movement gesture of the dummies are well matched. The results show that the dual-trapezoid curve of collision acceleration constructed can replace the corresponding original automobile collision waveform to be applied in the development of vehicle safety system.
机译：汽车碰撞加速度是直接反映汽车的碰撞过程中的一个重要参数。这是密切相关的乘员的伤害，并广泛应用于汽车安全结构的设计。通常，碰撞加速度波形简化为双梯形曲线，以便分析车身结构和乘员的伤害之间的关系。然而，双梯形曲线的建设主要依靠技术人员的主观经验，这限制了普及和双梯形曲线的实际应用。在确保实车碰撞波形和双梯形曲线是在工作时间和精力方面等同的基础上，本文提出了一种基于实车碰撞波形特征参数提取方法，它可以简化复杂和不断变化的碰撞加速度波形进入参数双梯形曲线。而且还就假人良好匹配的原始波形和双梯形曲线，损伤反应与轨迹小车对比试验。结果表明，在车辆安全系统的开发应用构造可以代替相应的原始汽车碰撞波形碰撞加速度的双梯形曲线。

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