Thin-walled closed box beam element for static and dynamic analysis

✍ Scribed by Yoon Young Kim; Jin Hong Kim

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 170 KB
• Volume: 45
• Category: Article
• ISSN: 0029-5981
• DOI: 10.1002/(sici)1097-0207(19990610)45:4<473::aid-nme603>3.0.co;2-b

✦ Synopsis

A new displacement-based ÿnite element is developed for thin-walled box beams. Unlike the existing elements, dealing with either static problems alone or dynamic problems only with the additional consideration of warping, the present element is useful for both static and dynamic analyses with the consideration of coupled deformation of torsion, warping and distortion. We propose to use a statically admissible in-plane displacement ÿeld for the element sti ness matrix and a kinematically compatible displacement ÿeld for the mass matrix so that the present element is useful for a wide range of beam width-to-height ratios. The axial variation of cross-sectional deformation measures is approximated by C 0 continuous interpolation functions. Numerical examples are considered to conÿrm the validity of the present element.