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Showing 1 to 20 of 21 for “"Lateral-Torsional Buckling"”.
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Lateral Torsional Buckling of Built-Up Beams
… in long-span applications without adequate lateral bracing, their strength is often governed by lateral-torsional buckling (LTB). The LTB behaviour of these systems is further complicated by the presence of discrete mechanical fasteners, which provide only partial interaction between plies, …
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Inelastic Lateral-Torsional Buckling of Beam-Columns
Made available in DSpace on 2014-12-08T23:56:24Z (GMT). No. of bitstreams: 1 6511844.pdf: 2617610 bytes, checksum: 655412831b310d6219b7e6ee9a3b82a3 (MD5) Previous issue date: 1965
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Cyclic lateral-torsional buckling of short I-beams
This report concerns the inelastic lateral buckling and post-buckling behavior of short I-beams subjected to cyclically reversing loads. The eccentrically braced frame, used in the earthquake resistant design of building structures, provides an application in which lateral buckling of short I-beams …
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Lateral-torsional buckling behaviour of monosymmetric steel sections formed with flange upstands
The study of the lateral-torsional buckling behaviour of steel beams has been largely focused on doubly symmetric beams and less so on monosymmetric sections. Monosymmetric sections, however, do offer some advantages over doubly symmetric beams if the monosymmetry is applied in a way that it can be …
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Elastic Lateral Torsional Buckling of Beams Strengthened with Cover Plates while under Loading
… it becomes a challenging task to assess the lateral torsional buckling (LTB) capacity of the member under present steel design standards (e.g., CAN/CSA-S16 2019 and ANSI/AISC360 2022) which do not consider the effect of pre-strengthening loads on LTB resistance. Within this context, the …
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Lateral-Torsional Buckling Instability Caused by Individuals Walking on Wood Composite I-Joists
… wood I-joists have poor resistance to applied lateral and torsional loads and are susceptible to lateral-torsional buckling instability. Workers walking on unbraced or partially braced wood I-joists can induce axial and lateral forces as well as twist. Experimental testing demonstrated that …
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An investigation into the effects of the shifting centroid and shear centre in notched steel beams undergoing elastic lateral torsional buckling
… at different vertical heights. The design for Lateral Torsional Buckling (LTB) in standard prismatic sections accounts for the monosymmetry through the monosymmetry factor which accounts for the additional twisting moment. However, this is not used in the analysis of notched regions for beams …
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Stability of Castellated Beams During Erection
… unbraced member is based on its resistance to lateral-torsional buckling. The cross-sectional properties that are related to lateral-torsional buckling, such as out-of-plane bending, warping constant, and torsional constant were calculated using three different approaches to model the unique …
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Large 3-D Deflection and Force Analysis of Lateral Torsional Buckled Beams
… beams with rectangular cross-sections undergoing lateral torsional buckling. The large 3-D deflection path of buckling beam tips was closely approximated by circular arcs in two planes. A new chain algorithm element was created from pseudo-rigid-body segments and used in a chain calculation that …
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Refined design expressions for in-plane girder stiffness and system buckling capacity
Lateral-torsional buckling at the system level (global buckling) has been the subject of several research studies over the past 20 years. This buckling mode often controls over conventional lateral-torsional buckling (buckling between braces points) when the girder system is long and narrow. One of …
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LRFD evaluation of full-scale metal building rigid frame tests
… ones in this study. The provisions concerning lateral-torsional buckling of singly-tapered segments were found to inappropriately contain AISC ASD factors of safety. New provisions were developed and recommended to correct this problem. The suggested provisions were found to be slightly more …
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Analytical Evaluations of Buckling Behavior of Wood Composite I-Joist with Sinusoidal Web
Flexural-torsional buckling or lateral torsional buckling is an important limit state for wood composite I-joist because the in-plane bending stiffness is typically greater than torsional lateral bending stiffness. Web local buckling is another important limit state because of the thin-walled web …
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Flange bracing requirements for metal building systems
… In this research, an inelastic eigenvalue buckling procedure is developed for calculation of the ideal bracing stiffness demands in general framing systems. Additionally, the software provides a method of calculating the elastic lateral-torsional buckling load of members with generally …
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Modelling of a Bio-inspired Bistable Structure for Potential Application in Fish Telemetry Tags
… to determine the effect of the aspect ratio, buckling displacement and thickness of the proposed harvester on the static force-displacement curve. The sensitivity analysis has highlighted that the assembly and geometric parameters of the bistable structure affect multiple aspects of the …
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Elastic and inelastic analysis of panel collapse by stiffener buckling
A method is developed for analyzing the flexural-torsional and lateral-torsional buckling ("tripping") behavior of flanged stiffeners subjected to axial force, end moment, lateral pressure and any combination of these. The effects of cross-sectional distortion, postbuckling behavior of the plate …
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Experiments on Cold-Formed Steel Beams with Holes
Experimental testing and elastic buckling studies were performed on 68 C-section cold-formed steel joists with unstiffened rectangular web holes. Four Steel Stud Manufacturers Association (SSMA) cross-section types; 800S200-33, 800S200-43, 1000S162-54, and 1200S162-97, were evaluated to explore the …
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Evaluating Shear links for Use in Seismic Structural Fuses
… and improve the reliability of structures. Buckling resistant shear panels can be used to form new structural systems, which have been shown in preliminary analysis to have improved hysteretic behavior including increased stiffness and energy dissipating ability. Both of these …
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Bending and Shear Behavior of Pultruded Glass Fiber Reinforced Polymer Composite Beams With Closed and Open Sections
… in three governing modes of failure: local buckling failure in the compression flange (4 ≤ L/h < 6), combined strain failure at the web-flange junction (6 ≤ L/h ≤ 10), and bending failure in the tension flange (10 < L/h ≤ 42). Broadly, the proposed equations are predicting …
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Finite Element Analysis of Unbraced Structural Wood I-Joists Under Construction Loads
… analysis and finite element modeling of the lateral and rotational response of unbraced wood composite I-joists to worker loads. All experimentation and modeling was conducted on simply supported I-joists varying from 11-7/8 inches to 14 inches in depth and 20 feet to 24 feet in length. …
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