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Lateral buckling of thin-walled members with shear lag using spline finite member element method

✍ Scribed by Quanfeng Wang; W.Y. Li

Book ID: 104269185
Publisher: Elsevier Science
Year: 2000
Tongue: English
Weight: 235 KB
Volume: 75
Category: Article
ISSN: 0045-7949
DOI: 10.1016/s0045-7949(99)00057-7

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✦ Synopsis

Based on the displacement variational principle, a general method, called the spline ®nite member element method, is developed for lateral buckling analysis of thin-walled members. A transformed B 3 -spline function presented in the paper is used to simulate the longitudinal warping displacement ®eld along the cross section of the thin-walled member. The analysis takes into account the eect of shearing strains of the middle surface of walls on the buckling, which re¯ects the shear lag phenomenon. Compared with the results from classical theory and other methods, the numerical results proposed in the paper demonstrate the versatility, accuracy and eciency of the proposed method. The fast convergency, shown in numerical examples, predicts the reliability of the results.

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