دانلود رایگان مقاله لاتین تاثیر اعوجاج پالت راک از سایت الزویر
عنوان فارسی مقاله:
تاثیر اعوجاج پالت راک برای فشار ترکیب شده و خمش
عنوان انگلیسی مقاله:
Distortion Influence of Pallet Rack Uprights Subject to Combined Compression and Bending
سال انتشار : 2016
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مقدمه انگلیسی مقاله:
1. Introduction
The main components of a steel storage pallet are the uprights, the pallet beams and the diagonals. The uprights are usually subjected to axial load and bending moment. The loads carried by the pallet beams are transmitted to the uprights through semi-rigid connections. When the loads are symmetrically distributed, at both sides of an upright, then it is working in pure compression. Whereas when the loading scheme is asymmetric, then the upright is subjected to compression and bending. The case of pure axial load is extremely rare in rack design practice and it is generally associated with the verification of lacings. With reference to the uprights, in addition to the contribution due to axial load, it is of fundamental importance to take into account also the presence of bending moments along the principal axes of the cross-section [1]. Extensive research has been focused on members loaded under pure compression; among these, [2,3] that are devoted to experimental testing of compressed members. Three methods (analytical, experimental and FEA) to estimate the effective area and the position of the centre of gravity for perforated sections are presented in [2]. Experimental deformations were measured on specimen lengths prone to distortional buckling failure in order to analyse the interaction between distortional and global buckling modes [3]. However, little research has been done to date about the behaviour of uprights subjected to combined compression and bending. Miller and Pekoz [4] investigated the behaviour of cold-formed steel lippedchannel columns with rectangular perforation patterns eccentrically loaded, and code predictions were compared with empirical responses. The results from an experimental investigation and a finite element analysis of cold-formed channel columns with inclined simple edge stiffeners subjected to eccentric loads presented by Zhang et al. in [5], show that loading position affects the load carrying capacity and failure mode of specimens. Mohri et al. [6] investigated bi-symmetric crosssections under combined bending and axial forces and compared a non-linear model for the stability analysis to non-linear finite element results. An experimental campaign [7] is conducted on the behaviour of cold-formed steel lipped-channel beam-columns under bi-axial bending and compression to characterize the failure modes and the member capacity, and the results are used to verify the reliability of code predictions about the strength of beam-columns. Concerning racks, Davies et al. [8] compared both GBT (with treatment of perforations) and FEA for predicting the failure load of perforated cold-formed steel sections subject to axial load and bending with test results. Crisan et al. [9] carried out a testing programme including bending about minor axis of single uprights with web in compression and tension, according to Annex A.2.9 [10]. Bernuzzi and Simoncelli [11] analysed the interaction between axial loads and bending moments in rack uprights, therefore three European design approaches were compared to evaluate the beam-column capacity.
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کلمات کلیدی:
Member design - Steelconstruction.info www.steelconstruction.info/Member_design 3.4 Tension; 3.5 Compression; 3.6 Bending; 3.7 Torsion; 3.8 Shear; 3.9 Bending ..... Members which are subjected to combined bending and axial compression ... Distortional Influence of Pallet Rack Uprights Subject to Combined ... www.sciencedirect.com/science/article/pii/S2352012416300285 by J Bonada - 2016 - Cited by 1 - Related articles May 24, 2016 - However, little research has been done to date about the behaviour of uprights subjected to combined compression and bending. Miller and ... Lateral–torsional buckling of cold-formed channel sections subject to ... www.sciencedirect.com/science/article/pii/S0143974X12001836 by S Cheng - 2013 - Cited by 13 - Related articles Oct 29, 2012 - It has been found that for a section subject to combined compression and the major-axis bending the bending moment will decrease the critical ... Design of Members Subject to Combined Bending and Tension https://www.concrete.org/publications/getarticle.aspx?m=ojs&pubID=11152 reinforced concrete columns; i.e., members with combined bending and compression. But the prob- lem of members subject to significant tension combined with ... [PPT]DESIGN OF MEMBERS FOR COMBINED FORCES - Purdue University https://engineering.purdue.edu/.../Combined%20Forces/CE470_Beam_Columns.ppt H1.1 Subject to flexure and compression; The interaction of flexure and ... If bending occurs the weak axis, then the moment ratio term of this equation will be ... [PDF]Combined Plastic Bending and Compression or Tension - Wiley www.wiley.com/legacy/wileychi/inelastic/pdf/C13.PDF analysis and consider the interaction of bending moment M and normal force N. ... COMBINED PLASTIC BENDING AND COMPRESSION b) σ ...... subject to. BT s − ¯fµs = 0. (13.91). NT s ≤ ˜s0. (13.92). Kinematic approach: A kinematically ... [PDF]Combined bending and compression - nptel nptel.ac.in/courses/105106113/5_cold_form_steel/6_combined_bending.pdf A.R.Santha Kumar. Indian Institute of Technology Madras. 5.6 Combined bending and compression. Compression members which are also subject to bending ... Searches related to Subject to Combined Compression and Bending combined bending and axial load bending moment of column column bending moment calculator column bending moment diagram combined compression and bending stress axial and bending stresses in beams eccentrically loaded column example how to calculate axial load on column
