OPTIMAL DESIGN FOR PRESCRIBED BUCKLING LOADS

A gradient method is formulated for the least-weight design of structural systems, reporesented by finite element assemblages, that must sustain prescribed buckling loads. An approach applied previously to free vibration problems is extended to stability problems. Included are the effects of nonlinear wieght-stiffness relationships and a lower-bound constraint on the design parameter. Results are compared with existing analytical solutions for single-span columns involving nonlinear weight-stiffness relations and the method is applied to cases of continuous columns and frameworks. A further practical use of the method incorporates an averaging technique whereby design parameters over prescribed segments are constrained to vary uniformly.

  • Corporate Authors:

    American Society of Civil Engineers

    345 East 47th Street
    New York, NY  United States  10017-2398
  • Authors:
    • MURTHY, K N
    • Christiano, P
  • Publication Date: 1974-11

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: p. 2175-90
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00264773
  • Record Type: Publication
  • Report/Paper Numbers: Proc. Paper 10912
  • Files: TRIS
  • Created Date: Jan 29 1975 12:00AM