Inelastic tangential stiffness for 2-D frames

Tai Yan Kam, Edwin C. Rossow, Ross B. Corotis

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


A general instantaneous or tangential stiffness matrix for a plane frame member is presented. Expressions in the form of integral equations are developed for members having axial forces and arbitrary material properties, distributed loads and moment-axial force-curvature relations. The expressions are used for w sections of elasto-plastic material and several examples of plane frames are loaded to failure. Experimental results reported in the literature for plane frames tested to inelastic failure are closely matched by the analytical technique.

Original languageEnglish (US)
Pages (from-to)2685-2697
Number of pages13
JournalJournal of Structural Engineering (United States)
Issue number11
StatePublished - Nov 1983
Externally publishedYes

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering


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