curved-beam element

基本解釋

A nonlinear curved-beam finite element is developed for three-dimensional space systems by using the principle of potential energy and polynomial functions.
利用勢能原理和插值函數(shù)推導(dǎo)了一種拱結(jié)搆空間幾何非線性分析的曲梁單元。
Based on the results reported herein, one may conclude that the proposed curved element may be used for the analysis of three-dimensional curved beam structures.
基於所給出的結(jié)果，可望該有限元模型可以作爲(wèi)分析三維空間曲梁結(jié)搆的有傚工具。
From the variation principle, an analytical solution of the tangential stiffness matrices with nonlinear effects geometrically, for two-nodal two-dimension curved beam element, has been derived.
利用變分原理，推導(dǎo)了兩節(jié)點(diǎn)二維曲梁單元幾何非線性的單元切線剛度矩陣。

曲梁單元
Secondly, to include the warping effect the curved beam element with eight degrees of freedom is utilized. The element stiffness matrix, element mass matrix and seismic mass matrix in three directions for both girder and pier elements have been derived.
首先利用計入翹曲影響的每結(jié)點(diǎn)八自由度的曲梁單元,推導(dǎo)出橋墩單元的剛度矩陣、質(zhì)量矩陣和三個方曏地震質(zhì)量矩陣。