ELASTIC STABILITY AND BUCKLING LOADS OF 3-DIMENSIONAL NONUNIFORM FRAMED SYSTEMS BY FINITE-ELEMENT METHOD USING SPATIAL LINE ELEMENTS

被引：2

作者：

BAGCI, C

机构：

[1] Department of Mechanical Engineering, Tennessee Technological University, Cookeville

来源：

COMPUTERS & STRUCTURES | 1979年 / 10卷 / 05期

关键词：

D O I：

10.1016/0045-7949(79)90037-3

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

A numerical computer method using spatial finite line elements for the determination of buckling loads of three-dimensional framed systems having complex boundary conditions is presented. A joint at end of an element experiences three rotational and three linear displacements. An element experiences axial, torsional and flexural deformations in two orthogonal planes. Buckling loads and corresponding mode vectors are determined by the solution of linear set of eigen value equations of elastic stability, where the elastic stability matrix is the product of three-dimensional sidesway flexibility matrix and the second-order sidesway stiffness matrix. Four numerical examples are included-a column, planar frame, four-legged system and three-legged triangular frame; having mixture of fixed, spherical, revolute, cylindrical and planar pairs at supports and joints. © 1979.

引用

页码：731 / 743

页数：13

共 13 条

[11]

Mehta, Bagci, Force and torque analysis of constrained space mechanisms and plane mechanisms with offset links by matrix displacement-direct element method, J. Mech. Machine Theory, 9, 3-4, pp. 385-403, (1974)

[12]

Brasfield, Bagci, Matrix displacement-direct element method for force and torque analysis of determinate and indeterminate space mechanisms with arbitrary skew angles, Trans. ASCE, J. Engng Industry, 97, pp. 671-681, (1975)

[13]

Bagci, Actual versus artificial finite line elements in force-displacement related problems of mechanics, ASME, J. Mech. Engng News, 14, 4, pp. 35-47, (1977)

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