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Apr 21, 2006 · RE: Strong axis plate bending DaveAtkins (Structural) 21 Apr 06 09:04 I think the allowable bending stress in a case like this is 0.6*Fy*Q, with Q being based on the local buckling criteria in Chapter B in the 9th Edition of AISC.
https://www.pdhonline.com/courses/s165/s165content.pdf
bent about the strong axis, Zx / Sx will always be ≤ 1.5. The flexural design strength of compact beams, laterally supported is given by: φbMn = φb Fy Zx ≤ φb 1.5 Fy Sx (Eq. 8) and φb = 0.90 Example 1 A W 16 x 36 beam of A992 steel (Fy = 50 ksi) supports a concrete floor slab that provides continuous lateral support to the compression flange. The
http://www.bgstructuralengineering.com/BGSCM14/BGSCM008/Flexure/BGSCM0080201.htm
As you apply bending about the strong axis, the member will buckle sideways and the section will rotate so that it is no longer vertical. This is lateral torsional buckling (LTB). The experiment is illustrated in Figure 8.2.1.4. Figure 8.2.1.4 Lateral Torsional Buckling Click on hotlinks in image for larger views
https://www.chegg.com/homework-help/questions-and-answers/problem-2-span-length-20-ft-bending-strong-axis-lateral-support-provided-ends-maximum-perm-q29109527
Problem 2 with a span length of 20 ft. If bending is about the strong axis and lateral support is provided only at both ends, what is the maximum permissible applied load Q (a service concentrated live load applied at midspan of the beam as shown) that this beam can carry?
https://www.quora.com/Why-is-lateral-torsional-buckling-not-a-concern-for-weak-axis-I-Beam-bending
There is little or no torsional component to the behavior. The flanges of a beam in minor axis bending can still experience local buckling, at the point of maximum of compression, but this is not resisted through torsion and it is not a global failure mode.
https://www.aisc.org/globalassets/aisc/university-programs/teaching-aids/first-semester-design-examples.pdf
Design Examples V14.0 AMERICAN INSTITUTE OF STEEL CONSTRUCTION iii PREFACE The primary objective of these design examples is to provide illustrations of the use of the 2010 AISC Specification for Structural Steel Buildings (ANSI/AISC 360-10) and the 14th Edition of the AISC Steel Construction Manual. The design examples provide coverage of all applicable limit states whether or not a ...
https://www.aisc.org/globalassets/modern-steel/steel-interchange/2014/012014_si.pdf
plastic section modulus for both weak and strong axis bending. For fully braced strong-axis bending of a compact member, the allowable stress used to be 0.66 y F instead of 0.6 y. The quotient 0.66/0.6 equals 1.1. This F approximates the ratio of x /S x …
http://www.steel-insdag.org/TeachingMaterial/Chapter11.pdf
4.0 LATERAL TORSIONAL BUCKLING OF SYMMETRIC SECTIONS As explained earlier, when a beam fails by lateral torsional buckling, it buckles about its weak axis, even though it is loaded in the strong plane. The beam bends about its strong axis up to the critical load at which it buckles laterally [Fig. 5(a) and 5(b)]. M Plan Elevation λ Section θ
https://engineering.purdue.edu/~ramirez/CE479/FALL05/ce479wooddesignnotescompressionandbending.pdf
about the strong axis of 13.92. It must be noted that the buckling stress, FcE, for the axial check is based on the (le/d)max whereas for the P-∆ effect is based on the axis about which the bending moment occurs (strong axis based on d1). In this example, it is a coincidence that the two values of the buckling stress, FcE, are the same.
https://www.quora.com/Structural-engineering-How-to-find-Strong-Weak-Axis-of-a-given-cross-section
Nov 02, 2015 · Every member has its strong as well as weak axis. A beam fails easily along direction of lower moment of inertia, a column fails about the axis with lower radius of gyration and a shear wall may collapse easily in out of plane effects. So how to find a strong or weak axis for a given cross section.
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