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Showing 1 to 20 of 53 for “"local buckling"”.
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Local buckling and crippling of composite stiffener sections
The local buckling, postbuckling, and crippling (failure) of channel, zee, and I- and J-section stiffeners made of AS4/3502 graphite-epoxy unidirectional tape are studied by experiment and analysis. Thirty-six specimens were loaded in axial compression as intermediate length columns. Examination of …
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The effects of corner radii on the local buckling of cold-formed sections
… neglected in codes for hot-rolled shapes, namely local and torsional buckling. The elements of a box or channel section formed from thin sheet may buckle locally, leading to collapse. To calculate the buckling stress the manufacturing process, makes the measurement of the width uncertain. Codes …
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Structural behavior of members consisting of flat and curved elements
<p>"Local buckling of stiffened and unstiffened curved elements has been investigated both experimentally and analytically. Stiffened curved elements are supported on all four edges while unstiffened curved elements are supported along three edges with one longitudinal edge free.</p> <p>A series of …
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Nonlinear inelastic analysis of concrete-filled steel tubular slender beam-columns
… tubular (CFST) slender beam-columns may undergo local and global buckling when subjected to biaxial loads, preloads or cyclic loading. The local buckling effects of steel tube walls under stress gradients have not been considered in existing numerical models for CFST slender beam-columns. This …
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Commercial application of aluminum honeycomb and foam in load bearing tubular structures
… but its maximum value is limited by the onset of local buckling. Tubular natural structures subjected to a complex load system have often an outer shell of solid material supported by a low density, compliant core, which makes them more resistant to local buckling. Biomimicking of natural …
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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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Structural analysis and optimum design of geodesically stiffened composite panels
… analysis approach is developed to predict the buckling of geodesically stiffened composite panels under in-plane loads. This procedure accounts for the discrete flexural contribution of each stiffener through the use of Lagrange multipliers in an energy method solution. An analysis is also …
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Effect of Column Axial Load on Skewed SMF RBS Connection Demands
… load, and applied connection rotations lead to local buckling issues within deep column moment frame configurations; however, increasing beam-skew and axial load has little effect on connection moment capacity prior to column local buckling initiation. Beam-skew angle is the dominate contributor …
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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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Reliability-based Design Optimization of a Nonlinear Elastic Plastic Thin-Walled T-Section Beam
… under combined loads and with flexural-torsional buckling and local buckling failure modes. First, a nonlinear elastic-plastic T-beam was modeled using a simple 6 degree-of-freedom non-linear beam element. To address the problems of RBDO, such as the high non-linearity and derivative discontinuity …
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Flambagem local de paredes associadas
… showed that with the hipothesis adopted, the local buckling is not largely influencied by the association of multiple walls.
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Analysis of bending stresses on horizontally corrugated steel silo wall panels
… ratio for the plate thickness was checked for local buckling. The width-to-thickness was found to be in the allowable region of the standards therefore, the local buckling was not a concern.
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Feasibility Study on Highly Slender Circular Concrete Filled Tubes Under Axial Compression
… As the strength of these tubes is dependent on local buckling, tests on many combinations of high strength steel and concrete are needed to extend these material limits. This preliminary research work focuses on understanding the local buckling behavior of highly slender sections and the effect …
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A Framework for Cyclic Simulation of Thin-Walled Cold-Formed Steel Members in Structural Systems
… capture the energy dissipation and damage due to buckling and cross-sectional deformations in thin-walled CFS components subjected to cyclic loads such as those induced by earthquakes. Likewise, models for screw-fastened CFS connections should capture the energy dissipation and damage due to …
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Experimental and Analytical Studies of the Behavior of Cold-Formed Steel Roof Truss Elements
… engineer typically tries to improve the local buckling behavior of the cold-formed steel elements. The complex hat shape has proved to limit the negative influence of local buckling, however, distortional buckling can be the controlling mode of failure in the design of chord members with …
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Instabilidade e sensibilidade de cascas cilíndricas circunferencialmente enrijecidas
An analysis of the buckling load and the imperfection-sensitivity of ring stiffened cylinders under external pressure is presented. Koiter's general post-buckling theory provides the basis to estimate the imperfection-sensitivity by relating it to the initial post-buckling behavior of the perfect …
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Mechanics of planar periodic microstructures
… into the voids in specified patterns. A local buckling instability in the square lattice and shear instability in the hexagonal lattice trigger the change in pattern in the structure upon reaching a critical stress during compression. Experimental and numerical results are obtained that …
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Failure and crippling of graphite-epoxy stiffeners loaded in compression
… tested to failure. Seventeen specimens exhibited local buckling of flanges and webs prior to failure, four exhibited global column buckling prior to failure, two exhibited material short column failure, and one exhibited unstable postbuckling behavior prior to failure. The buckling loads for each …
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Modeling of Hysteretic Behavior of Beam -Column Connections Based on Self -Learning Simulation
… in that it can handle complex behavior due to local buckling and tearing of connecting elements. Moreover, its numerical implementation is more efficient than the conventional models since it does not need an interaction equation and a plastic potential. A new approach based on a self-learning …
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