Vibration of FG Porous Three-Layered Beams Equipped by Agglomerated Nanocomposite Patches Resting on Vlasov's Foundation

2021 ◽  
Author(s):  
Mohammad Khorasani ◽  
Hassan Elahi ◽  
Marco Eugeni ◽  
Luca Lampani ◽  
Omer Civalek
Keyword(s):  
Layered Beams

Actuation of Piezoelectric Layered Beams With $d_{31}$ and $d_{33}$ Coupling

2018 ◽  
Vol 65 (5) ◽  
pp. 815-827 ◽  
Author(s):  
Cuong H. Nguyen ◽  
Ulrik Hanke ◽  
Einar Halvorsen
Keyword(s):  
Layered Beams

scholarly journals The elastic-plastic delamination analysis of layered beam configurations

2019 ◽  
Vol 39 (2) ◽  
pp. 165-173
Author(s):  
Victor Rizov
Keyword(s):  
Analytical Solutions ◽  
Strain Energy Release ◽  
Integral Approach ◽  
J Integral ◽  
Elastic Plastic ◽  
Crack Location ◽  
Layered Beams ◽  
Delamination Fracture ◽  
Non Linear ◽  
Point Bend

The elastic-plastic delamination fracture in layered beams was studied theoretically. Two Four Point Bend (FPB) beam configurations (the Double Leg Four Point Bend (DLFPB) and the Single Leg Four Point Bend (SLFPB)) were analyzed. An elastic-plastic constitutive model with power law hardening was used in the analysis. Fracture behavior was studied by applying the J-integral approach. The analytical solutions of the J-integral were obtained at characteristic levels of the external load. The solutions obtained were verified by analyzing the strain energy release rate with taking into account the material non-linearity. The variation of J-integral value in a function of crack location along the beam dept was investigated. The effect of material non-linearity on the fracture was evaluated. The analysis revealed that the J-integral value decreased with increasing the lower crack arm thickness. It was also found that the material non-linearity has to be taken into account in fracture mechanics based safety design of structural members and components made of layered materials. The analytical solutions obtained are very useful for non-linear investigations, since the simple formulae derived capture the essentials of non-linear fracture in the layered beams under consideration.

scholarly journals Experimental study of flexural behaviour of layered steel fibre reinforced concrete beams

2017 ◽  
Vol 23 (6) ◽  
pp. 806-813 ◽  
Author(s):  
Inmaculada MARTÍNEZ-PÉREZ ◽  
Juozas VALIVONIS ◽  
Remigijus ŠALNA ◽  
Alfonso COBO-ESCAMILLA
Keyword(s):  
Reinforced Concrete ◽  
Steel Fibre ◽  
Load Capacity ◽  
Reinforced Concrete Beams ◽  
Internal Layer ◽  
Fibre Reinforced Concrete ◽  
Test Results ◽  
Flexural Behaviour ◽  
Steel Fibre Reinforced Concrete ◽  
Layered Beams

The building of structures from steel fibre reinforced concrete (SFRC) in the external and conventional rein­forced concrete (RC) in the internal layer represents an economical alternative of structures effectively using SFRC. The paper presents test results of flexural behaviour of layered beams with SFRC external layers and RC internal layer. The behaviour of these beams is compared to test results of SFRC and conventional RC beams. The test results show, that the flexural load capacity for all series of beams is nearly similar, but the deflections of layered beams are less comparing to monolithic ones. It also been shown that the equations indicated in the Eurocode 2 can be used to design the flexural reinforcement in layered SFRC beams.

scholarly journals The edge effects in layered beams

2018 ◽  
Vol 365 ◽  
pp. 042049 ◽  
Author(s):  
Vladimir Andreev ◽  
Robert Turusov ◽  
Nikita Tsybin
Keyword(s):  
Edge Effects ◽  
Layered Beams

scholarly journals A New Approach for Severity Estimation of Transversal Cracks in Multi-layered Beams

2016 ◽  
Vol 13 (8) ◽  
pp. 1526-1544 ◽  
Author(s):  
Gilbert-Rainer Gillich ◽  
Nuno M. M. Maia ◽  
Ion-Cornel Mituletu ◽  
Marius Tufoi ◽  
Vasile Iancu ◽  
...  
Keyword(s):  
New Approach ◽  
Severity Estimation ◽  
Layered Beams

Connection Efficiency of Wood-Concrete Structural Floor System

2014 ◽  
Vol 600 ◽  
pp. 105-110
Author(s):  
Ruy Alexandre Sá Ribeiro ◽  
Marilene Gomes Sá Ribeiro
Keyword(s):  
Rural Areas ◽  
Bottom Layer ◽  
Brazilian Amazon ◽  
Construction Site ◽  
Wide Beam ◽  
Layered Beams ◽  
Concrete Layer ◽  
Brazilian Amazon Region ◽  
Composite Wood ◽  
Floor System

The wood-concrete research project uses medium to high density reclaimed tropical hardwoods from the Brazilian Amazon region and steel rods scraps from a construction site. The beams studied are composed of a bottom layer of staggered wood boards and a top layer of concrete. The wood members are laterally nailed together to form a wide beam, and horizontal rebar connectors are installed before the concrete layer is applied on top. Wood-concrete layered beams with horizontal rebar connectors were tested in third-point loading flexural bending. An improvement on the previously conceived connection detail for a composite wood-concrete structural floor system was achieved. The new layout of the horizontal rebar connectors added more strength and higher composite efficiency for the beams tested. Further analysis is suggested to optimize the connection parameters in terms of spacing and number of connectors. Composite wood-concrete decks can attend a large demand for pedestrian and road bridges in rural areas, as well as residential and commercial slabs.

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