A modified Vlasov theory for dynamic analysis of thin-walled and variable open section beams

2000 ◽  
Vol 22 (8) ◽  
pp. 890-900 ◽  
Author(s):  
Ricardo Daniel Ambrosini ◽  
Jorge Daniel Riera ◽  
Rodolfo Francisco Danesi
Keyword(s):  
Dynamic Analysis ◽  
Open Section ◽  
Thin Walled ◽  
Vlasov Theory

Dynamic analysis of thin-walled open section beam under moving vehicle by transfer matrix method

2008 ◽  
Vol 30 (5) ◽  
pp. 603-617 ◽  
Author(s):  
Tianyu Xiang ◽  
Tengfei Xu ◽  
Xinpeng Yuan ◽  
Renda Zhao ◽  
Yuqiang Tong
Keyword(s):  
Dynamic Analysis ◽  
Transfer Matrix ◽  
Transfer Matrix Method ◽  
Matrix Method ◽  
Moving Vehicle ◽  
Open Section ◽  
Thin Walled

Dynamic analysis of thin-walled and variable open section beams with shear flexibility

1995 ◽  
Vol 38 (17) ◽  
pp. 2867-2885 ◽  
Author(s):  
Ricardo Daniel Ambrosini ◽  
Jorge Daniel Riera ◽  
Rodolfo Francisco Danesi
Keyword(s):  
Dynamic Analysis ◽  
Open Section ◽  
Thin Walled

scholarly journals Spectral Dynamic Analysis of Torsional Vibrations of Thin-Walled Open Section Beams Restrained Against Warping at One End and Transversely Restrained at the Other End

2018 ◽  
Vol 1 (1) ◽  
Author(s):  
Chellapilla Kameswara Rao 1 ◽  
Lokavarapu Bhaskara Rao 2
Keyword(s):  
Dynamic Analysis ◽  
Torsional Vibration ◽  
Natural Frequencies ◽  
Frequency Equation ◽  
The Other ◽  
Graphical Form ◽  
Open Section ◽  
Torsional Frequency ◽  
Thin Walled ◽  
Spectral Frequency

The present paper deals with spectral dynamic analysis of free torsional vibration of doubly symmetric thin-walled beams of open section. Spectral frequency equation is derived in this paper for the case of rotationally restrained doubly-symmetric thin-walled beam with one end rotationally restrained and transversely restrained at the other end. The resulting transcendental frequency equation with appropriate boundary conditions is derived and is solved for varying values of warping parameter and the rotational and transverse restraint parameter. The influence of rotational restraint parameter, transverse restraint parameter and warping parameter on the free torsional vibration frequencies is investigated in detail. A MATLAB computer program is developed to solve the spectral frequency equation derived in this paper. Numerical results for natural frequencies for various values of rotational and transverse restraint parameters for various values of warping parameter are obtained and presented in both tabular as well as graphical form showing the influence of these parameters on the first fundamental torsional frequency parameter.

Pretwisted Curved Beams of Thin-Walled Open Section

1972 ◽  
Vol 39 (3) ◽  
pp. 779-785 ◽  
Author(s):  
A. I. Soler
Keyword(s):  
Numerical Technique ◽  
Equations Of Motion ◽  
Highway Bridges ◽  
Major Effect ◽  
Curved Beams ◽  
Open Section ◽  
Straight Beam ◽  
Thin Walled ◽  
Bending Modes ◽  
Axes Of Symmetry

Equations of motion are derived for coupled extension, flexure, and torsion of pretwisted curved bars of thin-walled, open section. The derivation is based on energy principles and includes inertia terms. The major effect of initial pretwist is to allow coupling of all possible beam deformation modes; however, if the bar is straight and has two axes of symmetry, pretwist causes coupling only between the two bending modes, and between extension and torsion. The governing equations are presented in first-order form, and a numerical technique is suggested for the case of space varying pretwist. It is suggested that these equations may form the basis for a simplified study of the effect of superelevation on the static and dynamic response of curved highway bridges. Finally, a simple straight beam with uniform pretwist is studied to compare effects of pretwist and restrained torsion in a thin-walled beam of open section.

A generalized Vlasov theory for thin-walled composite beam structures

1994 ◽  
Vol 30 (1) ◽  
pp. 43-54 ◽  
Author(s):  
J. Altenbach ◽  
H. Altenbach ◽  
V. Matzdorf
Keyword(s):  
Composite Beam ◽  
Beam Structures ◽  
Thin Walled ◽  
Vlasov Theory
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