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Behavior of Industrial Steel Rack Connections

机译：工业钢架连接的行为

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摘要

Beam-to-column connections (BCCs) used in steel pallet racks (SPRs) play a significant role to maintain the stability of rack structures in the down-aisle direction. The variety in the geometry of commercially available beam end connectors hampers the development of a generalized analytic design approach for SPR BCCs. The experimental prediction of flexibility in SPR BCCs is prohibitively expensive and difficult for all types of commercially available beam end connectors. A suitable solution to derive a particular uniform M-θ relationship for each connection type in terms of geometric parameters may be achieved through finite element (FE) modeling. This study first presents a comprehensive description of the experimental investigations that were performed and used as the calibration bases for the numerical study that constituted its main contribution. A three dimensioned (3D) non-linear finite element (FE) model was developed and calibrated against the experimental results. The re model took into account material nonlinearities, geometrical properties and large displacements. Comparisons between numerical and experimental data for observed failure modes and M-θ relationship showed close agreement. The validated FE model was further extended to perform parametric analysis to identify the effects of various parameters which may affect the overall performance of the connection.
机译：钢制托盘架（SPR）中使用的梁对柱连接（BCC）在保持机架结构在下通道方向上的稳定性方面起着重要作用。市售梁端连接器的几何形状多种多样，阻碍了SPR BCC通用分析设计方法的发展。对于所有类型的市场上可买到的梁端连接器，SPR BCC的灵活性的实验性预测价格过高且困难。可以通过有限元（FE）建模来实现一种合适的解决方案，以根据几何参数得出每种连接类型的特定均匀M-θ关系。这项研究首先全面介绍了进行的实验研究，并将其用作构成其主要贡献的数值研究的校准基础。开发了三维（3D）非线性有限元（FE）模型，并针对实验结果进行了校准。重新模型考虑了材料的非线性，几何特性和大位移。观察到的破坏模式和M-θ关系的数值和实验数据之间的比较显示出紧密的一致性。经过验证的有限元模型进一步扩展为执行参数分析，以识别可能影响连接整体性能的各种参数的影响。

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