Modal analysis of cold-formed pallet rack structures with semi-rigid connections

Bajoria, Kamal M.; Sangle, Keshav K.; Talicotti, Rajshekar S.

doi:10.1016/j.jcsr.2009.10.005

Cited by 35 publications

(20 citation statements)

References 5 publications

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“…Members with mono-symmetric or complex (asymmetric or non-symmetric) cross-section, or complete structures realized with them, should be accurately investigated via FE shell models: as an example, Sangle et al [55] and Bajoria et al [56] carried out extensive numerical researches on pallet racks via very refined finite element models using shell elements to simulate uprights, beams and connections. This modeling technique is however not properly indicated for routine rack design.…”

Section: Buckling Interaction Between Axial Load and Bending Momentmentioning

confidence: 99%

European design approaches for isolated cold-formed thin-walled beam–columns with mono-symmetric cross-section

Bernuzzi

Simoncelli

2015

Engineering Structures

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Section: Buckling Interaction Between Axial Load and Bending Momentmentioning

confidence: 99%

European design approaches for isolated cold-formed thin-walled beam–columns with mono-symmetric cross-section

Bernuzzi

Simoncelli

2015

Engineering Structures

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“…Double cantilever has better illustration in actual frame shear to moment ratio. Steel pallet rack systems or structures have a great experience subjected to seismic load [ 31 ]. From semirigid connection experimental study (conventional cantilever method and double cantilever method) and finite element model analysis, an analytical model was developed to describe the seismic behaviour in down aside direction.…”

Section: Researches On Cold-formed Steel Connectionsmentioning

confidence: 99%

Review on Cold-Formed Steel Connections

Lee

Tan

Mohammad

et al. 2014

The Scientific World Journal

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The concept of cold-formed light steel framing construction has been widespread after understanding its structural characteristics with massive research works over the years. Connection serves as one of the important elements for light steel framing in order to achieve its structural stability. Compared to hot-rolled steel sections, cold-formed steel connections perform dissimilarity due to the thin-walled behaviour. This paper aims to review current researches on cold-formed steel connections, particularly for screw connections, storage rack connections, welded connections, and bolted connections. The performance of these connections in the design of cold-formed steel structures is discussed.

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“…일반적이다. 이러한 부재는 단면이 복잡한 형상을 띄므로 엄밀한 응답해석을 위해서는 기존 연구자들 [1][2][3][4] 이 수행한 바 와 같이 상세 유한요소법(Finite Element Method; FEM)이 요 구되나, 본 연구에서는 전체 구조물의 동적 안전성 개선을 위한 거동 특성 및 경향성 평가를 목적으로 하므로 기존 연구들로부터 단순화된 등가 프레임 요소(equivalent frame element)를 사용하였다 4) . 정밀해석을 통하여 등가 환산된 각 부재별 단면 물성치는 .…”

Section: 서 론unclassified

Behavioral Characteristics Investigation of Rack Structure Depending on Forklift Impact Scenarios and Storage Distributions

Ok¹,

Kwon²,

Paik³

2013

Journal of the Korean Society of Safety

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The statistics of recent accidents in warehouses show that a heavy toll of lives were produced by various accidents, e.g. collision, overturn, fall, slip, exposure to harmful substances or environments, etc. Of significant concern amongst them is the collision, especially the collision between forklift and storage rack structure. Accordingly, this study focuses on behavioral characteristics of rack structure subjected to dynamic impact loading of a forklift. For this purpose, time-domain response analysis has been performed on a standard 2-bay six-story rack structure consisting of columns, beams and bracing members with perforated open section. In order to investigate the most critical scenario, the impact loads are applied in both down-aisle and cross-aisle directions, and the impact locations are also varied along the shelves of the palettes. In order to deal with storage distributions, three types of rack structures are further taken into account: original empty rack structure with no storage, half-loaded rack structure and fully-loaded rack structure. The numerical simulation results demonstrate that the dynamic characteristics of the rack structure are significantly dependent on the distribution of the storage goods and its natural period varies from 0.24sec to 1.06sec, approximately 4.4 times. Further, the parametric studies show that the forklift impact is most critical to the safety of the rack structure when it collides either at the base or at the top of the rack structure.

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Modal analysis of cold-formed pallet rack structures with semi-rigid connections

Cited by 35 publications

References 5 publications

European design approaches for isolated cold-formed thin-walled beam–columns with mono-symmetric cross-section

European design approaches for isolated cold-formed thin-walled beam–columns with mono-symmetric cross-section

Review on Cold-Formed Steel Connections

Behavioral Characteristics Investigation of Rack Structure Depending on Forklift Impact Scenarios and Storage Distributions

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