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A Large Deflection Analysis Method for Lateral Torsional Buckling

[+] Author Affiliations
Robert P. Chase

Spirit Aerosystems, Wichita, KS

Robert H. Todd, Larry L. Howell, Spencer P. Magleby

Brigham Young University, Provo, UT

Paper No. DETC2007-34531, pp. 47-53; 7 pages
  • ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 8: 31st Mechanisms and Robotics Conference, Parts A and B
  • Las Vegas, Nevada, USA, September 4–7, 2007
  • Conference Sponsors: Design Engineering Division and Computers and Information in Engineering Division
  • ISBN: 0-7918-4809-4 | eISBN: 0-7918-3806-4
  • Copyright © 2007 by ASME


Research is presented on describing the deflection behavior of prismatic beams with high aspect ratio rectangular cross-sections undergoing lateral torsional buckling. The 3-D large deflection path of buckling beam tips was closely approximated by circular arcs in two planes. When deflection paths of beams with different geometric and material properties were nondimensionalized with respect to the beam length, these deflection paths were the same with very little variation. Similarly, the change in the beam tip orientation as the beams deflected also remained the same as geometry and material properties were varied.

Copyright © 2007 by ASME
Topics: Buckling , Deflection



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