Mesomechanical analysis of the ELASTO-PLASTIC behavior of a 3D composite-structure under tension

2005 ◽  
Vol 36 (6) ◽  
pp. 475-483 ◽  
Author(s):  
V. A. Romanova ◽  
E. Soppa ◽  
S. Schmauder ◽  
R. R. Balokhonov
Keyword(s):  
Composite Structure ◽  
Plastic Behavior ◽  
3D Composite

scholarly journals Design of a 3D composite structure considering data uncertainties and various failure mechanisms

PAMM ◽  
2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Martin Drieschner ◽  
Yuri Petryna ◽  
Lukas Eichner
Keyword(s):  
Composite Structure ◽  
Failure Mechanisms ◽  
3D Composite

A novel 3D composite structure with tunable Poisson's ratio and stiffness

2015 ◽  
Vol 252 (7) ◽  
pp. 1565-1574 ◽  
Author(s):  
Xiaonan Hou ◽  
Hong Hu
Keyword(s):  
Composite Structure ◽  
Poisson’S Ratio ◽  
Poisson's Ratio ◽  
3D Composite

A 3D-composite structure of FeP nanorods supported by vertically aligned graphene for the high-performance hydrogen evolution reaction

2017 ◽  
Vol 5 (22) ◽  
pp. 11301-11308 ◽  
Author(s):  
Dongqi Li ◽  
Qingyu Liao ◽  
Bowen Ren ◽  
Qiuyan Jin ◽  
Hao Cui ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Composite Structure ◽  
High Performance ◽  
Graphene Nanosheets ◽  
Vertically Aligned ◽  
3D Composite

A 3D-composite structure of FeP nanorods on vertically aligned graphene nanosheets has been fabricated for the high-performance hydrogen evolution reaction.

Computational Study on Mechanical Behavior of Steel-Concrete Composite by using Interface Elements

2007 ◽  
Vol 345-346 ◽  
pp. 909-912
Author(s):  
Dae Seock Shin ◽  
Heung Shik Lee ◽  
Chong Du Cho
Keyword(s):  
Composite Structure ◽  
Bonding Strength ◽  
Computational Study ◽  
Critical Role ◽  
Sensitivity Analyses ◽  
Interface Fracture ◽  
Interface Element ◽  
Plastic Behavior ◽  
Interface Properties ◽  
Concrete Interface

Although steel-concrete interface has significant influence on bonding strength and shear strength, the composite structure with the consideration of the interface fracture has been rarely conducted. In this study, sensitivity analyses are performed to find out steel-concrete interface characteristics by using interface finite elements, defined as elastic-plastic behavior. In order to verify computational accuracy, the analyzed interface properties are compared with experimental results. Generally, interface in steel-concrete composite structure plays a critical role of controlling bonding strength as well as transferring loads between steel and concrete. The composite interface should be avoided to reach to an interface fracture condition; otherwise composite structure may deviate from intended behavior even under low stress state. It is then led to catastrophic fracture or collapse of the structure. This study shows that interface properties of steel-concrete can be analyzed by using the interface element, and the results provide more reliable prediction for the steel-concrete composite behavior.

Damping Analysis of 3D Composite Structure Embedded with Visco-Elastic Layer

2011 ◽  
Vol 383-390 ◽  
pp. 2719-2722 ◽  
Author(s):  
Muhammad Iqbal Sabir ◽  
Er Bao Liu ◽  
Wan Tao Guo ◽  
Zhen Li ◽  
Li Li
Keyword(s):  
Composite Structure ◽  
Elastic Layer ◽  
Composite Structures ◽  
Transient Analysis ◽  
Dynamic Behaviour ◽  
Fatigue Loading ◽  
Resonant Vibrations ◽  
Reinforced Composite ◽  
3D Composite ◽  
Damping Capability

Recently, the fiber reinforced composite embedded with visco-elastic layer has received great attention because of its good damping capability. Damping is an important feature for dynamic behaviour of composite structures, which alleviates the resonant vibrations and thus prolongs the service life of structures under fatigue loading or impact. The present paper deals with the dynamic response of a 3D composite structure embedded with visco-elastic layer. The modal analysis, harmonic analysis and transient analysis are carried out respectively. The amplitude of z-displacement of a specific node on the bottom reduces quickly due to the high damping of the visco-elastic layer.

Multiscale Modeling of Hybrid Composite Structures

2011 ◽  
Vol 471-472 ◽  
pp. 916-921 ◽  
Author(s):  
Milan Růžička ◽  
Jiří Had ◽  
Viktor Kulíšek ◽  
Ondřej Uher
Keyword(s):  
Multiscale Modeling ◽  
Cross Sections ◽  
Composite Structure ◽  
Hybrid Composite ◽  
Composite Structures ◽  
Unidirectional Composite ◽  
Scale Model ◽  
Practical Applications ◽  
Macro Scale ◽  
3D Composite

A novel type of hybrid composite structure has been developed, experimentally investigated and used for many practical applications. The main supporting elements of composite structures are formed by the stamping process of partially cured and axially-oriented carbon fibre rods. This system can fill relatively thick parts of cross sections of beams without risk of delamination. Typical macroscopic sub-cells are formed in the transversal cross section of the part due to this technology. An advantage of this final 3D composite structure is its high shear strength and stiffness in comparison with thick unidirectional composite parts. To absorb the dynamic energy and increase the damping, a rubber-cork layer can be inserted during production, before the final pressing and curing of the whole part. The final stiffness property of the whole 3D composite is obtained from multiscale modeling. It is based on an averaging process and a homogenization technique in FEA. A parametric study was carried out to determine the influence of the size, orientation and thickness of the cell border winding layer on the components of the global elastic material matrix. A comparison of a numerical analysis prediction with experimental results shows acceptable agreement of the elastic modules. A mezzo scale model can be applied for designing a real part on a macro scale.

scholarly journals LSPR optical fiber biosensor based on a 3D composite structure of gold nanoparticles and multilayer graphene films

2020 ◽  
Vol 28 (5) ◽  
pp. 6071 ◽  
Author(s):  
Can Li ◽  
Zhen Li ◽  
Shuanglu Li ◽  
Yanan Zhang ◽  
Baoping Sun ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Optical Fiber ◽  
Composite Structure ◽  
Multilayer Graphene ◽  
Graphene Films ◽  
3D Composite

Delamination in the scoring and folding of paperboard

TAPPI Journal ◽  
2012 ◽  
Vol 11 (1) ◽  
pp. 61-66 ◽  
Author(s):  
DOEUNG D. CHOI ◽  
SERGIY A. LAVRYKOV ◽  
BANDARU V. RAMARAO
Keyword(s):  
Finite Element ◽  
Plane Deformation ◽  
Strain Analysis ◽  
Local Strain ◽  
Uniaxial Stress ◽  
Material Model ◽  
Element Model ◽  
Plastic Behavior ◽  
Stress Strain ◽  
Strain Fields

Delamination between layers occurs during the creasing and subsequent folding of paperboard. Delamination is necessary to provide some stiffness properties, but excessive or uncontrolled delamination can weaken the fold, and therefore needs to be controlled. An understanding of the mechanics of delamination is predicated upon the availability of reliable and properly calibrated simulation tools to predict experimental observations. This paper describes a finite element simulation of paper mechanics applied to the scoring and folding of multi-ply carton board. Our goal was to provide an understanding of the mechanics of these operations and the proper models of elastic and plastic behavior of the material that enable us to simulate the deformation and delamination behavior. Our material model accounted for plasticity and sheet anisotropy in the in-plane and z-direction (ZD) dimensions. We used different ZD stress-strain curves during loading and unloading. Material parameters for in-plane deformation were obtained by fitting uniaxial stress-strain data to Ramberg-Osgood plasticity models and the ZD deformation was modeled using a modified power law. Two-dimensional strain fields resulting from loading board typical of a scoring operation were calculated. The strain field was symmetric in the initial stages, but increasing deformation led to asymmetry and heterogeneity. These regions were precursors to delamination and failure. Delamination of the layers occurred in regions of significant shear strain and resulted primarily from the development of large plastic strains. The model predictions were confirmed by experimental observation of the local strain fields using visual microscopy and linear image strain analysis. The finite element model predicted sheet delamination matching the patterns and effects that were observed in experiments.

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