變截面桿元的傳遞矩陣和剛度矩陣
李青寧
- 摘 要
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李青寧
(西安建筑科技大學(xué)建工系 710055)[提要] 導(dǎo)出了矩形、箱形、圓形和環(huán)形變截面桿元的傳遞矩陣、剛度矩陣和幾種常見荷載下的固端力，均為精確解析式，可直接應(yīng)用于工程結(jié)構(gòu)的受力分析，或補充到現(xiàn)有計算程序的單元庫中。
[關(guān)鍵詞] 變截面 桿元 傳遞矩陣 剛度矩陣 固端力The transfer matrices and stiffness matrices of bar elements with variable cross-section are derived, which include rectangular, box, circular and annular cross-section bars. The fixed-end forces of bar elements in some kinds of common load action are derived also. These matrices and forces are all accurate analytic formulas, which can be used in structural analysis directly, and can be supplied into available computer programs elements storage.
Keywords: variable cross-section; bar element; transfer matrix; stiffness matrix; fixed-end forces
