教師資料查詢 | 類別: 期刊論文 | 教師: 姚忠達 Jong-dar Yau (瀏覽個人網頁)

標題:A new buckling theory for curved beams of solid cross sections derived from rigid body and force equilibrium considerations
學年102
學期1
出版(發表)日期2014/01/27
作品名稱A new buckling theory for curved beams of solid cross sections derived from rigid body and force equilibrium considerations
作品名稱(其他語言)
著者Yang, Y.B.; Kuo, S.R.; Yau, J.D.
單位淡江大學建築學系
出版者Abingdon: Taylor &; Francis
著錄名稱、卷期、頁數The IES Journal Part A: Civil & Structural Engineering 7(2), pp.63-72
摘要A new method is proposed for deriving the instability potential of initially stressed curved beams based on the rigid body and equilibrium considerations using the updated Lagrangian formulation. Starting from the rigid body rule, the virtual instability potential was derived for a spatially curved beam under real rigid displacements. Next, utilising the equilibrium equations for the boundary forces at the C1 and C2 states, another virtual instability potential was derived for the curved beam under virtual rigid displacements. Comparing the two potentials yields the one in total form for the curved beam. The present approach requires only simple integrations and analogical comparison of related virtual works, thereby avoiding the physically unclear, complicated derivations involved in previous procedures. Based on the first principles of rigid body rule and equilibrium, the derived potential energy is more concise than the conventional approach that requires the consideration of six stress components in the formulation. As an illustration, the present theory was successfully adopted in the buckling analysis of helical curved beams under radial loads.
關鍵字curved beam;instability potential;rigid body rule;stability
語言英文
ISSN1937-3279
期刊性質國外
收錄於EI;
產學合作
通訊作者Yang, Y.B.
審稿制度
國別英國
公開徵稿
出版型式,電子版,紙本
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