高階層梁之部分應力模態理論

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Title:	高階層梁之部分應力模態理論
Other Titles:	PHSM Applied to Higher-Order Laminated Beams Theory
Authors:	曾一平;陳芳誠
Contributors:	淡江大學土木工程學系
Keywords:	部分應力模態;高階層梁理論;橫向剪應力;直交異向性積層梁;撓曲應力;勁度;位移分析;Partial Hybrid Stress Method;Higher-Order Beam Theory;Transverse Shear Stress;Orthotropic Laminated Beam;Flexural Stess;Stiffness;Displacement Analysis
Date:	1990-11
Issue Date:	2014-02-08 19:30:24 (UTC+8)
Publisher:	臺北市：臺灣大學造船工程研究所
Abstract:	本文結合部分應力模態(Partial Hybrid Stress Method,PHSM)應用於高階層梁理論。針對直交異向性積層梁,修正 Hellinger-Reissner principle,於撓曲部分包含撓曲應力.sigma.x,橫向剪力部分則以橫向剪應力場.gamma. xz假設之,經由變分可推導得PHSM的元素勁度矩陣,在撓曲部分為位移法勁度矩陣,而在橫向剪力部分則是hybrid法勁度矩陣。於淺梁,中厚梁及深梁的位移與應力分析中,本法遠較位移法精確,更可改進沿積層板方向橫向剪應力分布。 The PHSM (Partial Hybrid Stress Method) is applied to the higher-order beam theory for orthotropic laminated beams in this paper. .sigma./sub x/ is included in the flexural part, and assumed transverse shear stress field.gamma./sub xz/ is included in the transverse shear part. Through variation, the stiffness of PHSM is the assembly of the flexural stiffness by displacement formulation and of the transverse shear stiffness by hybrid formulation. For displacement and stress analysis of thin, moderately thick and thick laminated beams, PHSM obtains much better results than the finite element displacement formulation of higher-order beam theory. Moreover, the through thickness distribution of transverse shear stress is grately improved.
Relation:	第三屆中國造船及輪機工程研討會論文集，頁97-106
Appears in Collections:	[Graduate Institute & Department of Civil Engineering] Proceeding

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