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3D Finite element analysis of end - plate steel joints
G.A. Drosopoulos,G.E. Stavroulakis,K.M. Abdalla 국제구조공학회 2012 Steel and Composite Structures, An International J Vol.12 No.2
This paper presents a numerical investigation of the mechanical behaviour of extended end - plate steel connections including comparison with full size experiments. Contact and friction laws have been taken into account with nonlinear, three dimensional finite element analysis. Material and geometric nonlinearities have been implemented to the model, as well. Results are then compared with experimental tests conducted at the Jordan University of Science and Technology. According to the most significant observation of the analysis, a separation of the column flange from the extended end - plate occurs. Other important structural parameters of the connection, like the impact of some column stiffeners on the overall response, local buckling of the column and friction of the beam to column interface, have been examined as well.
Comparisons of smart damping treatments based on FEM modeling of electromechanical impedance
C. P. Providakis,D.-P. N. Kontoni,M. E. Voutetaki,M. E. Stavroulaki 국제구조공학회 2008 Smart Structures and Systems, An International Jou Vol.4 No.1
In this paper the authors address the problem of comparing two different smart damping techniques using the numerical modelling of the electro-mechanical impedance for plate structures partially treated with active constrained layer damping treatments. The paper summarizes the modelling procedures including a finite element formulation capable of accounting for the observed behaviour. The example used is a smart cantilever plate structure containing a viscoelastic material (VEM) layer sandwiched between a piezoelectric constrained layer and the host vibrating plate. Comparisons are made between active constrained layer and active damping only and based on the resonance frequency amplitudes of the electrical admittance numerically evaluated at the surface of the piezoelectric model of the vibrating structure.
Comparisons of smart damping treatments based on FEM modeling of electromechanical impedance
Providakis, C.P.,Kontoni, D.P.N.,Voutetaki, M.E.,Stavroulaki, M.E. Techno-Press 2008 Smart Structures and Systems, An International Jou Vol.4 No.1
In this paper the authors address the problem of comparing two different smart damping techniques using the numerical modelling of the electro-mechanical impedance for plate structures partially treated with active constrained layer damping treatments. The paper summarizes the modelling procedures including a finite element formulation capable of accounting for the observed behaviour. The example used is a smart cantilever plate structure containing a viscoelastic material (VEM) layer sandwiched between a piezoelectric constrained layer and the host vibrating plate. Comparisons are made between active constrained layer and active damping only and based on the resonance frequency amplitudes of the electrical admittance numerically evaluated at the surface of the piezoelectric model of the vibrating structure.