Πλοήγηση ανά Συγγραφέα "Sophianopoulos, D. S."
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Analytical treatment of in-plane parametrically excited undamped vibrations of simply supported parabolic arches
Sophianopoulos, D. S.; Michaltsos, G. T. (2003)The present work offers a simple and efficient analytical treatment of the in-plane un-damped vibrations of simply supported parabolic arches under parametric excitation. After thoroughly dealing with the free vibration ... -
Bifurcations and catastrophes of a two-degrees-of-freedom nonlinear model simulating the buckling and postbuckling of rectangular plates
Sophianopoulos, D. S. (2007)The nonlinear buckling and postbuckling behavior of rectangular plates in symmetric and antisymmetric modes is re-examined, in the context of Bifurcation and Catastrophe Theories, using a two-degrees-of-freedom model, which ... -
Dipolar gradient elasticity of cables
Giannakopoulos, A. E.; Petridis, S.; Sophianopoulos, D. S. (2012)The increasing structural use of cables and cable-systems has given rise to a substantial technical literature concerning their static and dynamic response. However, the majority of these works is based on classical ... -
Earthquake resistant design and rehabilitation of masonry historical structures
Asteris, P. G.; Tzamtzis, A. D.; Vouthouni, P. P.; Sophianopoulos, D. S. (2005)A general methodology for the earthquake resistant design and rehabilitation of damaged masonry historical structures is presented. The whole process is illustrated through a case study: The rehabilitation of Zoodohos Pigi ... -
The effect of infinitesimal damping on the dynamic instability mechanism of conservative systems
Sophianopoulos, D. S.; Michaltsos, G. T.; Kounadis, A. N. (2008)The local instability of 2 degrees of freedom (DOF) weakly damped systems is thoroughly discussed using the Lienard-Chipart stability criterion. The individual and coupling effect of mass and stiffness distribution on the ... -
The effect of joint flexibility on the free elastic vibration characteristics of steel plane frames
Sophianopoulos, D. S. (2003)The present work offers a simplified approach for establishing the effect of joint flexibility on the free vibration characteristics of steel plane frames. Based on the beam-to-column model of Eurocode 3, the presented ... -
Flexural-torsional vibration of simply supported open cross-section steel beams under moving loads
Michaltsos, G. T.; Sarantithou, E.; Sophianopoulos, D. S. (2005)The present work deals with linearized modal analysis of the combined flexural-torsional vibration of simply supported steel beams with open monosymmetric cross-sections. acted upon by a load of constant magnitude, traversing, ... -
In-plane stability of uniform steel beam-columns on a Pasternak foundation with zero end-shortening
Sophianopoulos, D. S.; Papachristou, K. S. (2012)The linearized buckling response of uniform steel beam-columns resting on a Pasternak foundation type is dealt with in this work. The corresponding two-point boundary value problem depends on the two parameters associated ... -
Interpolation based numerical procedure for solving two-point nonlinear boundary value problems
Sophianopoulos, D. S.; Asteris, P. G. (2004)The present paper offers a simple, efficient and accurate straightforward numerical method for solving two-point nonlinear boundary value problems (NBVPs), which are frequently encountered in a broad discipline of sciences. ... -
Mathematical Macromodeling of Infilled Frames: State of the Art
Asteris, P. G.; Antoniou, S. T.; Sophianopoulos, D. S.; Chrysostomou, C. Z. (2011)The primary objective of this paper is to present a general review of the different macromodels used for the analysis of infilled frames. A number of distinct approaches in the field of analysis of infilled frames since ... -
MODAL DYNAMICS APPROXIMATIONS OF CANTILEVERS UNDER PARTIAL FOLLOWER LOAD
Sophianopoulos, D. S.; Katsamagou, S.; Kefou, N. (2010)Presented herein is a modified Galerkin discretization procedure for determining the qualitative dynamic behavior of elastic cantilevers with internal damping under partial follower step loading at their tips. For this ... -
Numerical method for the undamped forced dynamics of steel cable network structures
Sophianopoulos, D. S.; Asteris, P. G. (2006) -
Parameters affecting response and design of steel moment frame reduced beam section connections: An overview
Sophianopoulos, D. S.; Der, A. E. (2011)The most crucial parameters that affect the response as well as the design of Steel Moment Frame (SMF) Reduced Beam Section (RBS) connections are discussed. After a brief historical background concerning the development ...