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首页> 外文期刊>Engineering Structures >Quasi-static crushing behaviour of the energy absorbing connector with polyurethane foam and multiple pleated plates
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Quasi-static crushing behaviour of the energy absorbing connector with polyurethane foam and multiple pleated plates

机译：具有聚氨酯泡沫和多个褶皱板的能量吸收连接器的准静态粉碎行为

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摘要

In this study, a novel energy absorbing connector with polyurethane (PU) foam and multiple pleated (MP) plates was contrived to dissipate energy, and the energy absorbing response was experimentally, numerically and analytically examined. First, quasi-static loading tests on the connectors were performed, from which the deformation modes, force-displacement curves, and energy absorbing performances (such as specific energy absorption (SEA) and crushing force efficiency (CFE)) were obtained. In addition, a numerical method was adopted to facilitate the evaluation of energy absorbing performance of the connectors. It was found that SEA could be increased by increasing the MP plate thickness, angle between the MP plate and flat plate (theta(o)), and filling PU foam. Moreover, the PU foam-filled connector was also found to be superior to the empty connector with regards to higher CFE. Finally, an energy-balance based analytical model was established to forecast the force-displacement response of the proposed connector. The experimental and analytical results were found to be similar.
机译：在该研究中，具有聚氨酯（PU）泡沫和多个褶皱（MP）板的新型能量吸收连接器以散发能量，并且通过实验，在数值和分析检查能量吸收响应。首先，进行连接器上的准静态加载测试，从中获得了变形模式，力 - 位移曲线和能量吸收性能（例如特定的能量吸收（SEA）和破碎力效率（CFE））。此外，采用了数值方法来促进对连接器的能量吸收性能的评估。结果发现，通过增加MP板厚度，MP板和平板（θ（O））和填充PU泡沫之间的角度可以增加海洋。此外，还发现PU泡沫填充的连接器，对于更高的CFE，也发现优于空连接器。最后，建立了基于能量平衡的分析模型，以预测所提出的连接器的力位移响应。发现实验和分析结果类似。

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