Transient Dynamic Analysis of Cold-Formed Storage Rack Structures with Semi-Rigid Connection for Impact Load


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Abstract


During the motion of the forklift machine or keeping the goods on the pallet rack structures, there is possibility of hitting forklift to the structural component of the rack structures. Generally this load act as impact load on the upright of the rack structures. Thus this load creates additional stress in the uprights other than stresses due to load of the goods. This paper describes the three dimensional finite element modeling and impact analysis of 3-D semi-rigid frame of conventional pallet racking system. In this study three dimensional model of semi-rigid frames were prepared using the finite element program ANSYS and transient dynamic analysis was carried out for 9 different types of developed upright sections. Basic objective of the study is to optimize the upright section when subjected to the impact of the forklift machine. The reductions in stresses for 2.5mm thick section with comparison to 2 mm thick section have been found to be 30 – 36%.
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Keywords


Transient Dynamic Analysis; Cold Formed Steel; Semi-Rigid Connections

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