TORSIONAL STRESS CONCENTRATION IN THIN-WALLED BEAMS

This is a study of the rectangular thin-walled cross section beam under torsion, with particular regard to the local effects by improving the mathematical model proposed in a previous study (Mentrasti 1987). The shearing strain is considered explicitly in order to easily investigate the loading and the constraint conditions that are not considered in the classical analysis. The details of the study are described. It was found that when the shearing stress is taken into account by means of polynomial shape functions up to degree five in the web, the governing equilibrium equations of a rectangular thin-walled box beam can be written as a differential system in the unknown functions theta(zeta) and phi(zeta). This and other findings are discussed.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/07339399
• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • Mentrasti, L
• Publication Date: 1989-9

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: p. 1882-03
• Serial:
  • Journal of Engineering Mechanics
  • Volume: 115
  • Issue Number: 9
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-9399
  • EISSN: 1943-7889
  • Serial URL: http://ascelibrary.org/journal/jenmdt

Subject/Index Terms

• TRT Terms: Box beams; Cross sections; Mathematical models; Shear strain; Stresses; Thin walls; Torsion
• Subject Areas: Bridges and other structures; Highways; I20: Design and Planning of Transport Infrastructure;

Filing Info

• Accession Number: 00488826
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 31 1989 12:00AM