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首页> 外文期刊>International journal of crashworthiness >Effect of the blockout crushability on the response of guardrail post subjected to lateral impact
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Effect of the blockout crushability on the response of guardrail post subjected to lateral impact

机译：挡块可压性对护栏柱承受侧向冲击的响应的影响

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摘要

The aim of the present work is to demonstrate the importance of the energy absorption during the impact of a vehicle with a guardrail system. Six collapsible blockout designs, which consist of a longitudinal box member that offers higher degree of energy absorption per unit mass and a stable folding pattern during the impact are evaluated and compared to the traditional design. A finite element model, consisting of a rigid impactor head travelling with an initial velocity and striking the post at a certain height, was developed and calibrated to dynamic test. The findings of this study highlight the importance of energy absorption of the blockout to reduce the impactor load transferred to the post and to improve the post response during a lateral dynamic impact.
机译：本发明的目的是证明在具有护栏系统的车辆碰撞期间能量吸收的重要性。与传统设计相比，对六个可折叠的遮挡设计进行了评估，这些设计包括一个纵向盒状部件，该部件在冲击过程中可提供更高的单位质量能量吸收程度，并且在撞击过程中具有稳定的折叠样式。开发了一个有限元模型，该模型由刚性冲击器头组成，该冲击器头以初始速度行进并在一定高度上撞击立柱，并进行了校准，以进行动态测试。这项研究的结果突显了吸收能量的重要性，对于减少动态冲击过程中传递到柱子上的冲击器载荷和改善柱子响应，该吸收剂的重要性。

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