Integrating Advanced Composite Materials Into the Chassis of a Sports Car

2004 ◽  
Author(s):  
Christopher J. Osborn ◽  
John M. Kennedy
Keyword(s):  
Element Model ◽  
Fiber Reinforced Polymer ◽  
Foam Core ◽  
Shell Elements ◽  
Advanced Composite ◽  
Weight Saving ◽  
Reinforced Polymer ◽  
Advanced Composite Materials ◽  
Total Vehicle ◽  
Isotropic Foam

This work evaluated the feasibility of replacing the current stamped-steel floor-pan bulkhead assembly (FBA) of a popular street car with one made of fiber reinforced polymer matrix composite material. To evaluate the feasibility, a finite element model was constructed which incorporated much of the midsection of the vehicle’s chassis. Each part of the chassis section assembly was modeled, meshed, and constrained such that the actual physical assembly relations were upheld. Shell elements were used to model the FBA, and brick and tetrahedron elements modeled the surrounding chassis. Six loading cases were considered: a torsion case, a bending case, and four seat load cases. The chosen composite consisted of an intermediate modulus fiber (AS4) and a typical thermal-set epoxy (3501-6). Four laminate stacking sequences were studied: two quasi-isotropic laminates, a zero-dominated laminate, and a symmetric laminate. A sandwich laminate case was also studied, which utilized quasi-isotropic face-sheets and an isotropic foam core. For comparison a steel case was also simulated. The overall result of the model showed that the sandwich case proved to be superior with the smallest displacements and stresses while reducing weight. The overall weight saving was an astonishing 3% of total vehicle weight which represents a significant savings for an automobile. Based on the results it was determined that the replacement of the steel FBA with a composite FBA is feasible.

scholarly journals Computational Investigation of through the Width Delamination of a Composite Laminate using VCCT

2021 ◽  
Vol 9 (VI) ◽  
pp. 128-131
Author(s):  
K. S. Vishwanath
Keyword(s):  
Transverse Direction ◽  
Computational Prediction ◽  
Fiber Reinforced Polymer ◽  
Computational Investigation ◽  
Shell Elements ◽  
Delamination Growth ◽  
Weight Saving ◽  
Reinforced Polymer ◽  
Growth Initiation ◽  
Polymer Laminates

The fiber reinforced polymer laminates have found extensive applications because of its advantages over other materials in terms of strength, stiffness, stability, weight saving features, resistance to corrosion and erosion and many more. But due to poor transverse direction strength, a failure mechanism called delamination will occur in case of poor manufacturing or when tools are dropped which would make an impact. In this paper, VCCT is implemented at the interface between base and sub laminate to investigate for 20mm through the width buckling driven delamination growth. The computational prediction of delamination growth initiation is obtained by solving a T300/976 specimen for geometric non linearity using SC8R continuum shell elements of Abaqus CAE and by plotting the required energy release rate at the edge of delamination geometry.

Simulation Analysis of Secondary-Load Rc Square Columns Strengthened with IFRP

2014 ◽  
Vol 501-504 ◽  
pp. 578-582
Author(s):  
Liang Hsu ◽  
Ming Long Hu ◽  
Jun Zhi Zhang
Keyword(s):  
Finite Element ◽  
Simulation Analysis ◽  
Element Model ◽  
Fiber Reinforced Polymer ◽  
Experimental Result ◽  
Compression Process ◽  
Reinforced Polymer ◽  
Secondary Load ◽  
The Impact ◽  
The Finite Element Model

Considering secondary load, simulate the axial compression process of reinforced concrete square columns strengthened with igneous rock fiber reinforced polymer with Abaqus. Make a comparison between the simulation result and experimental result. The finite-element model can simulate the experiment preferably. And the impact of lagged strain is very obvious.

Nonlinear Analysis of R.C Beams Strengthened with CFRP

2012 ◽  
Vol 166-169 ◽  
pp. 1517-1520
Author(s):  
Wen Sheng Li ◽  
Kai Wang
Keyword(s):  
Finite Element ◽  
Carbon Fiber ◽  
Nonlinear Analysis ◽  
Element Model ◽  
Reinforced Concrete Beams ◽  
Fiber Reinforced Polymer ◽  
Element Analysis ◽  
Flexural Performance ◽  
Reinforced Polymer ◽  
Flexural Resistance

In order to study on the flexural performances of beams strengthened with external bonded carbon fiber reinforced polymer（CFRP）sheets, nonlinear analysis is carried out by using software ANSYS. The results show that a reasonable finite element model, using a reasonable solution strategy can be a good simulation of CFRP flexural performance of reinforced concrete beams, and finite element analysis results with the experimental results have good consistency .The beams reinforced by carbon fiber polymer，the capacity of flexural resistance increased with the numbers of carbon fiber paste sheets, reinforced components of flexural capacity significantly improved, but the extent of its increase is not proportional with the numbers of carbon fiber paste sheets.

Fibre Reinforced Polymer Rebar

2015 ◽  
Vol 1124 ◽  
pp. 89-96
Author(s):  
Jan Prokeš
Keyword(s):  
Heat Transfer ◽  
Composite Materials ◽  
Concrete Cover ◽  
Fire Tests ◽  
Corrosion Attack ◽  
Advanced Composite ◽  
Reinforced Polymer ◽  
Advanced Composite Materials ◽  
Fibre Reinforced Polymer

The paper is focused on the use of advanced composite materials in the real application areas of buildings exposed to extreme environmental stress. The paper describe properties of composite rebar, especially with regards to long-term resistance to chemical and corrosion attack, minimization of heat transfer or resistance in construction with reduced concrete cover. The paper also presents behavior of composite rebar and concrete samples with composite reinforcement during loading and fire tests.

scholarly journals An Experimental and Analytical Study on the Bending Performance of CFRP-Reinforced Glulam Beams

2022 ◽  
Vol 8 ◽  
Author(s):  
Minjuan He ◽  
Yuxuan Wang ◽  
Zheng Li ◽  
Lina Zhou ◽  
Yichang Tong ◽  
...  
Keyword(s):  
Element Model ◽  
Experimental Results ◽  
Fiber Reinforced Polymer ◽  
Tensile Failure ◽  
Synthetic Fiber ◽  
Fiber Reinforced ◽  
Bending Performance ◽  
Reinforced Polymer ◽  
Bending Loads ◽  
The Difference

The fiber-reinforced polymer is one kind of composite material made of synthetic fiber and resin, which has attracted research interests for the reinforcement of timber elements. In this study, 18 glued-laminated (glulam) beams, unreinforced or reinforced with internally embedded carbon fiber–reinforced polymer (CFRP) sheets, were tested under four-point bending loads. For the reinforced glulam beams, the influences of the strengthening ratio, the modulus of elasticity of the CFRP, and the CFRP arrangement on their bending performance were experimentally investigated. Subsequently, a finite element model developed was verified with the experimental results; furthermore, a general theoretical model considering the typical tensile failure mode was employed to predict the bending–resisting capacities of the reinforced glulam beams. It is found that the reinforced glulam beams are featured with relatively ductile bending failure, compared to the brittle tensile failure of the unreinforced ones. Besides, the compressive properties of the uppermost grain of the glulam can be fully utilized in the CFRP-reinforced beams. For the beams with a 0.040% strengthening ratio, the bending–resisting capacity and the maximum deflection can be enhanced approximately by 6.51 and 12.02%, respectively. The difference between the experimental results and the numerical results and that between the experimental results and analytical results are within 20 and 10%, respectively.

Numerical Analysis of Composites Embedded With Magnetostrictive Material for Sensing Capability

2011 ◽  
Author(s):  
Jonathan Rudd ◽  
Oliver Myers
Keyword(s):  
3D Model ◽  
Magnetic Field Intensity ◽  
Numerical Models ◽  
Element Model ◽  
Fiber Reinforced Polymer ◽  
Carbon Fiber Reinforced Polymer ◽  
Magnetic Flux Density ◽  
Stress And Strain ◽  
Finite Element Software ◽  
Reinforced Polymer

In this paper, numerical models are constructed to analyze the magneto-mechanical interaction in a laminate embedded with terfenol-D (TD) for sensing purposes. The first model is a linear 3D model constructed in multi-physics finite element software and examines mechanical and magnetic sensing parameters of a sensing layer embedded in a composite laminate with a delamination along the sensing layer. The structural plies in the model are defined with the anisotropic properties of T300/ carbon fiber reinforced polymer (CFRP) plies. The results of the first model show that there is a local change in stress and strain in the region of the delamination. However, by assuming the magnetic permeability is constant in the constitutive sensing equation, the sensing parameter (magnetic flux density) does not change as a function of stress but only magnetic field intensity. The second model is a 2D boundary element model constructed in FADD2D that analyzes the stress intensity factors generated by a crack in a beam of similar geometry and loading configuration. It is loaded mechanically through two endpoints on a beam and the crack is offset from the center of the beam. The results of the second model show no significant stress increase in the crack region due to the Poisson’s effect creating crack closure on the crack. These models are used to analyze the mechanical and magnetic mechanisms that allow Terfenol-D to be used as an embedded sensor in composites.

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