Theoretical and Experimental Results on the Dynamic Behaviour of Composite Beams, Plates and Shells

1987 ◽  
pp. 72-88 ◽  
Author(s):  
Mahir Sayir
Keyword(s):  
Dynamic Behaviour ◽  
Composite Beams ◽  
Experimental Results ◽  
Plates And Shells

scholarly journals Flexural Behavior of Fiber-Reinforced Self-Stressing Concrete T-Shaped Composite Beams

2020 ◽  
Vol 2020 ◽  
pp. 1-17 ◽  
Author(s):  
Boxin Wang ◽  
Ruichang Fang ◽  
Qing Wang
Keyword(s):  
Composite Beam ◽  
Mechanical Analysis ◽  
Composite Beams ◽  
Experimental Results ◽  
Flexural Behavior ◽  
Fiber Reinforced ◽  
Beam Test ◽  
Test Beam ◽  
Bending Performance ◽  
Laminated Layer

Given the excellent crack resistance performance of steel fiber-reinforced self-stressing concrete (SFRSSC), the bending performance of some composite beams with SFRSSC laminated layers was studied. The experiment conducted in this study comprised a single-span composite beam test (including 3 test beams) and a two-span continuous composite beam test (including 2 test beams). All the test beams were T-shaped. The cracking load, yielding load, and ultimate load of all the test beams were recorded and comparatively analyzed. Experimental results showed that the cracking load of the test beam with an SFRSSC laminated layer is significantly increased. Mechanical analysis and numerical simulation of the test beams were conducted, and the obtained results agreed well with the experimental results. The composite beams under different working conditions were also numerically simulated. Through the simulation, reasonable ranges of precompressive stress and length of the SFRSSC laminated layer at intermediate support of continuous composite beam were obtained.

Dynamik des Zerfalls von Inversionswänden in einem nematischen flüssigen Kristall / Dynamics of the Annihilation of Inversion Walls in a Nernatic Liquid Crystal

1974 ◽  
Vol 29 (9) ◽  
pp. 1356-1366 ◽  
Author(s):  
G. Heppke ◽  
F. Schneider
Keyword(s):  
Magnetic Field ◽  
Liquid Crystal ◽  
Electric Conductivity ◽  
Dynamic Behaviour ◽  
Numerical Procedure ◽  
Experimental Results ◽  
Conductivity Measurements

Inversion walls are generated by rotating the direction of a magnetic field by 180° with respect to the director in the homeotropically aligned nematic layer. A numerical procedure based on the Leslie-Ericksen theory allows for the calculation of the dynamic behaviour of the inversion walls. Experimental results obtained with MBBA by electric conductivity measurements show satisfying agreement with theory.

Dynamic behaviour of steel-concrete composite beams retrofitted with various bolted shear connectors

2017 ◽  
Vol 131 ◽  
pp. 115-135 ◽  
Author(s):  
I.E.J. Henderson ◽  
X.Q. Zhu ◽  
B. Uy ◽  
O. Mirza
Keyword(s):  
Dynamic Behaviour ◽  
Composite Beams ◽  
Shear Connectors

Optimal lay-up of hybrid composite beams, plates and shells using cellular genetic algorithm

2003 ◽  
Vol 16 (5) ◽  
pp. 557-580
Author(s):  
S. Rajasekaran ◽  
K. Nalinaa ◽  
S. Greeshma ◽  
N.S. Poornima ◽  
V. Vinoop Kumar
Keyword(s):  
Genetic Algorithm ◽  
Hybrid Composite ◽  
Composite Beams ◽  
Cellular Genetic Algorithm ◽  
Plates And Shells

scholarly journals Structural Behavior of Reinforced Self-Compacted Engineered Cementitious Composite Beams

2016 ◽  
Vol 2016 ◽  
pp. 1-12 ◽  
Author(s):  
Bashar S. Mohammed ◽  
M. F. Nuruddin ◽  
Muhammad Aswin ◽  
Nursyuhada Mahamood ◽  
Hashem Al-Mattarneh
Keyword(s):  
Reinforced Concrete ◽  
Large Scale ◽  
Concrete Beam ◽  
Failure Modes ◽  
Reinforced Concrete Beam ◽  
Composite Beams ◽  
Experimental Results ◽  
Structural Behavior ◽  
Cementitious Composite ◽  
Engineered Cementitious Composite

Eight large-scale reinforced self-compacted engineered cementitious composite (R-SC-ECC) beams with different steel reinforcement ratios have been designed, prepared, cast, cured, and tested to failure at the age of 28 days. The experimental results have been compared with theoretical values predicted using EC2, RILEM, and VecTor2 models. Results show that failure modes in flexure and shear of R-SC-ECC beams are comparable to that of normal reinforced concrete beam. Nevertheless, contrary to VecTor2, models of EC2 and RILEM are not suitable for predicting reasonable ultimate moments for the beams, while results using VecTor2 model have successfully predicted the failure modes and load-deflection curves for all R-SC-ECC beams. It has been concluded that R-SC-ECC fall in the category of ductility class medium to high which gives advantages of using R-SC-ECC beams in regions susceptible to seismic activities.

scholarly journals Effect of skin-core debonding on the dynamic behaviour of GFRP composite beams

2013 ◽  
Author(s):  
Indunil Jayatilake ◽  
Karu Karunasena ◽  
Weena Lokuge
Keyword(s):  
Dynamic Behaviour ◽  
Composite Beams ◽  
Gfrp Composite

Vibration Control of a Rotor System Utilizing a Bearing Housing With Controllable Spring Nonlinearity

1994 ◽  
Author(s):  
Baojiang Liu ◽  
Litang Yan ◽  
Qihan Li ◽  
Zigen Zhu
Keyword(s):  
Vibration Control ◽  
Nonlinear Vibration ◽  
Dynamic Behaviour ◽  
Rotor System ◽  
Experimental Results ◽  
Squeeze Film ◽  
Solution Curve ◽  
Operating Process ◽  
Squeeze Film Dampers ◽  
Vibration Performance

On the basis of characteristics of vibration in the rotor system with spring nonlinearity, a new method for vibration control has been developed. In the method, the spring characteristics of a bearing housing are controlled to be of softening nonlinearity when the rotor supported on it is accelerated and to be of hardening one when it is decelerated. So vibratory amplitudes of the rotor system always vary along the smallest solution curve in the whole operating process. A model of vibration of the rotor system supported on the controllable hearing housing is derived. Its dynamic behaviour is predicted and verified by experiments. Both theoretical and experimental results show that not only vibratory amplitudes and transmitted forces are suppressed significantly but also nonlinear vibration performance of the rotor supported on squeeze film dampers, such as “lock up” at rotor pin-pin critical speeds and asynchronous vibration, can be avoided.

Dynamic Behaviour of Debonded GFRP Composite Beams

2013 ◽  
Vol 1 (2) ◽  
pp. 113-122 ◽  
Author(s):  
INDUNIL JAYATILAKE ◽  
WARNA KARUNASENA ◽  
WEENA LOKUGE
Keyword(s):  
Dynamic Behaviour ◽  
Composite Beams ◽  
Gfrp Composite
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