scholarly journals Study and Analysis of the Magneto-Mechanical Behavior of Smart Composite Sandwich Beam in Elastomer

Mechanika ◽  
2019 ◽  
Vol 25 (4) ◽  
pp. 320-325 ◽  
Author(s):  
SETTET Ahmed Tidjani ◽  
AGUIB Salah ◽  
NOUR Abdelkader ◽  
ZERROUNI Nassim
Keyword(s):  
Magnetic Field ◽  
Mechanical Behavior ◽  
Sandwich Beam ◽  
Rheological Parameters ◽  
Smart Composite ◽  
Complex Materials ◽  
Three Point Bending ◽  
Composite Sandwich ◽  
Linear Behavior ◽  
Small Deformations

The purpose of this work is to analyze the nonlinear magneto-mechanical behavior of sandwich structures with a magnetorheological elastomer (MRE) core subjected to a permanent magnetic field. A detailed study is first carried out to characterize the mechanical behavior of these structures. The tests were carried out in three-point bending on beams of these complex materials for several distances between supports. An experimental study of the static response, is realized using a Zwick 2.5kN machine, allows to measure displacements as a function of force. The results deduced from the numerical simulation by the Abaqus software are compared with those obtained from the theoretical analysis. This study made it possible to show that these structures exhibit a non-linear behavior even at small deformations due to the rheological parameters which are more sensitive by the application of a magnetic field.

Quasi-Static Failure Analysis of Honeycomb Sandwich Beam with Composite Facesheets

2010 ◽  
Vol 160-162 ◽  
pp. 855-859 ◽  
Author(s):  
Li Qing Meng ◽  
Yan Wu ◽  
Shi Zhe Chen ◽  
Xue Feng Shu
Keyword(s):  
Sandwich Beam ◽  
Indentation Test ◽  
Core Material ◽  
Honeycomb Core ◽  
Three Point Bending ◽  
Composite Sandwich ◽  
Sandwich Construction ◽  
Honeycomb Sandwich ◽  
Nomex Honeycomb ◽  
Static Failure

Sandwich construction consists of two thin composite or metal facesheets separated by a core material. Despite extensive researches on the sandwich constructions, their mechanical properties and failure behaviours are still not fully understand. The objective of the paper is to use a experimental and theoretical predicting failure mode for sandwich beam consisting of GFRP facesheets and Nomex honeycomb core. Two kinds of composite sandwich beams are observed in quasi-static three-point bending and indentation test.

Study on the Vibration of a Sandwich Beam with Smart Composites—MRF

2007 ◽  
Vol 546-549 ◽  
pp. 1649-1654 ◽  
Author(s):  
Bai Xiang Hu ◽  
Guo Liang Zheng ◽  
Pin Qi Xia
Keyword(s):  
Magnetic Field ◽  
Composite Material ◽  
Composite Beam ◽  
Vibration Analysis ◽  
Natural Frequencies ◽  
Sandwich Beam ◽  
Smart Composite ◽  
Smart Composites ◽  
Vibration Model ◽  
Vibration Responses

Smart composite material-MRF’s rheological properties such as viscosity and shear modulus can vary when subjected to different magnetic fields. This paper established the vibration model of the smart composite beam featuring MRF. The vibration analysis was finished under different magnetic field strengths using the method of complex stiffness. The experiment was performed to validate the theoretical predicted vibration responses. From both studies, the natural frequencies and loss factors of the MRF beam were shifted to a higher lever when the applied magnetic field increases. From the findings of the analysis, it is observed that MRF presents vibration control capabilities.

Degradation Mechanism of the Balsa Wood Core Composite Sandwich Beam From Heating From One Side

2001 ◽  
Author(s):  
Piyush K. Dutta ◽  
David Hui ◽  
Marta Argueso
Keyword(s):  
High Temperature ◽  
Room Temperature ◽  
Degradation Mechanism ◽  
Sandwich Beam ◽  
Bending Test ◽  
Balsa Wood ◽  
Three Point Bending ◽  
Composite Sandwich ◽  
Different Temperatures

Abstract An experimental study of the behavior at different temperatures of Balsa Wood Core Composite Sandwich (BWCCS) panels proposed to be used in shipboard structures is presented. It characterizes the high temperature failure of the BWCCS under a flexural load. The study includes two different experiments. The first is the determination of temperature distribution along the thickness of BWCCS panels. In the second, the panels are studied in a three-point bending test at two different temperatures: room temperature (20°C) and high temperature (79°C).

Bending Response of Composite Sandwich Beams with M-Type Folded Cores

2014 ◽  
Vol 1049-1050 ◽  
pp. 452-455
Author(s):  
Li Xin Cong ◽  
Yu Guo Sun
Keyword(s):  
Failure Modes ◽  
Fiber Composite ◽  
Sandwich Beam ◽  
Deformation Mode ◽  
Sandwich Beams ◽  
The Finite Element Method ◽  
Carbon Fiber Composite ◽  
Maximum Displacement ◽  
Three Point Bending ◽  
Composite Sandwich

Bending properties and failure modes of sandwich structure with carbon fiber composite M-type folded cores were investigated and presented in this paper. Three point bending responses of both sandwich beams were measured. The finite element method was utilized to determine deformation mode of sandwich beam with M-type folded cores. Cores buckling and debonding have been studied under three point bending and the maximum displacement was also studied using FE-analytical and experimental methods.

Deformation and Energy Absorption of Composite Sandwich Beams

2014 ◽  
Vol 626 ◽  
pp. 468-473
Author(s):  
Martin Vcelka ◽  
Yvonne Durandet ◽  
Christopher C. Berndt ◽  
Dong Ruan
Keyword(s):  
Energy Absorption ◽  
Sandwich Beam ◽  
Low Velocity Impact ◽  
Sandwich Beams ◽  
Low Velocity ◽  
Three Point Bending ◽  
Fibre Breakage ◽  
Composite Sandwich ◽  
Analytical Expressions ◽  
Composite Face

Experimental observations and data are employed to elucidate the effect of indenter size on the deformation and energy absorption of composite sandwich beams. Unlike metal face sheets that yield and plastically deform to create an intact indentation zone; composite face sheets tend to fail in a brittle manner resulting in fibre breakage that leads to widespread fracture. This mode of failure can dictate how the load is transferred throughout the structure and directly affect the energy absorption character of the composite sandwich beam. Quasi-static and low velocity impact (LVI) three-point bending experiments with various indenter diameters were conducted to observe the interaction between indenter and face sheet and the energy absorption properties. The results are compared with existing analytical expressions.

scholarly journals Special Issue on Advanced Theoretical and Computational Methods for Complex Materials and Structures

2021 ◽  
Vol 11 (6) ◽  
pp. 2532
Author(s):  
Francesco Tornabene ◽  
Rossana Dimitri
Keyword(s):  
Composite Materials ◽  
Mechanical Behavior ◽  
Computational Methods ◽  
Complex Geometries ◽  
Structural Members ◽  
Complex Materials ◽  
Special Issue ◽  
Scientists And Engineers

The large use of composite materials and shell structural members with complex geometries in technologies related to various branches of engineering, has gained increased attention from scientists and engineers for the development of even more refined approaches, to investigate their mechanical behavior [...]

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