Application of the Finite Element Method in Screening of Body Turn up Heights for Radial Truck Tires

2001 ◽  
Vol 29 (3) ◽  
pp. 186-196 ◽  
Author(s):  
X. Yan
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Material Model ◽  
The Finite Element Method ◽  
Truck Tires ◽  
Contact Constraint ◽  
Nonlinear Mechanical ◽  
Critical Regions ◽  
Constraint Method ◽  
Element Method

Abstract A method is described to predict relative body turn up endurance of radial truck tires using the finite element method. The elastomers in the tire were simulated by incompressible elements for which the nonlinear mechanical properties were described by the Mooney-Rivlin model. The belt, carcass, and bead were modeled by an equivalent orthotropic material model. The contact constraint of a radial tire structure with a flat foundation and rigid rim was treated using the variable constraint method. Three groups of tires with different body turn up heights under inflation and static footprint loading were analyzed by using the finite element method. Based on the detail analysis for stress analysis parameters in the critical regions in the tires, the relative body turn up edge endurance was predicted.

scholarly journals Analysis of planes within reduced micromorphic model

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
A. R. El Dhaba ◽  
S. Mahmoud Mousavi
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Three Dimensional ◽  
Continuum Theory ◽  
Material Model ◽  
External Loading ◽  
The Finite Element Method ◽  
Governing System ◽  
Generalized Continuum ◽  
Element Method

AbstractA plane within reduced micromorphic model subjected to external static load is studied using the finite element method. The reduced micromorphic model is a generalized continuum theory which can be used to capture the interaction of the microstructure. In this approach, the microstructure is homogenized and replaced by a reduced micromorphic material model. Then, avoiding the complexity of the microstructure, the reduced micromorphic model is analyzed to reveal the interaction of the microstructure and the external loading. In this study, the three-dimensional formulation of the reduced micromorphic model is dimensionally reduced to address a plane under in-plane external load. The governing system of partial differential equations with corresponding consistent boundary conditions are discretized and solved using the finite element method. The classical and nonclassical deformation measures are then demonstrated and discussed for the first time for a material employing the reduced micromorphic model.

Tire Rolling Loss Computation with the Finite Element Method

1994 ◽  
Vol 22 (4) ◽  
pp. 206-222 ◽  
Author(s):  
J. R. Luchini ◽  
J. M. Peters ◽  
R. H. Arthur
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Strain Tensor ◽  
Rolling Resistance ◽  
Material Model ◽  
Hysteretic Behavior ◽  
Fe Model ◽  
The Finite Element Method ◽  
Stress Strain ◽  
Element Method

Abstract This paper describes a process for the prediction of rolling resistance in tires. A new Directional Incremental Hysteresis (DIH) theory describing the hysteretic behavior of carbon black filled rubber is presented. The steps required to implement the DIH theory in a material model, within a Finite Element (FE) model, and to predict tire rolling resistance are described. The material model using the DIH theory is a strain-based model which includes an incremental formulation to deal with nonsinusoidal cycles within tires. The material model is also enhanced by a directional formulation which is active in situations where the strain tensor has a substantial change in direction with minimal change in magnitude. The hysteresis material model is developed only for the rubber compounds of the tire. While there is no direct contribution of cord hysteresis to predicted rolling loss, the structural effects of the cord on the rubber stress-strain behavior are included and will contribute to the tire rolling loss by affecting the stress-strain cycle of the rubber. Experimental work used to determine the parameters of the material model for specific compounds is outlined. Some example DIH parameters are listed by compound application. The DIH theory within the Finite Element method is then used to predict rolling resistance for a specific tire design. The results are compared to experimental data taken using SAE J-1269. The value of the tire rolling resistance is predicted within a few percent. In addition, the sensitivities of the tire to changes in load and inflation pressure are predicted and they are found to compare favorably to the experimental results. The DIH theory is implemented within a quasi-static FE model, and was not intended for use in dynamic applications such as the prediction of standing wave phenomena. While the quasi-static FE model used in this study can predict deformed shapes, stress distributions, and temperatures, there is presently no coupling between the thermal and mechanical models.

scholarly journals On the computational modelling of nonlinear electro-elasticity in heterogeneous bodies at finite deformations

2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Anas Kanan ◽  
Michael Kaliske
Keyword(s):  
Mechanical Properties ◽  
Finite Element Method ◽  
Finite Element ◽  
Numerical Solutions ◽  
Volume Fraction ◽  
Material Model ◽  
Electric Response ◽  
Tube Model ◽  
The Finite Element Method ◽  
Element Method

AbstractDielectric elastomer actuators (DEA) have been demonstrated to exhibit a quasi-immediate electro-mechanical actuation response with relatively large deformation capability. The properties of DEA make them suitable to be used in the form of major active components within soft robotics and biomimetic artificial muscles. However, some of the electro-active material properties impose limitations on its applications. Therefore, researchers attempt to modify the structure of the homogeneous DEA material by the incorporation of fillers that possess distinct electro-mechanical properties. This modification of the material’s structure leads to a fabricated inhomogeneous composite. From the point of mathematical material modelling and numerical simulation, we propose a material model and a computational framework using the finite element method, which is capable of emulating nonlinear electro-elastic interactions. We consider a coupled electro-mechanical description with the electric and the electro-mechanical properties of the material assumed to be nonlinearly dependent on the deformation. Furthermore, we demonstrate a coupled ansatz that expresses the electric response as dielectrically quasi-linear with only density-dependent electric permittivity. We couple the electro-mechanical models to the extended tube model, which is a suitable approach for the realistic emulation of the hyperelastic response of rubber-like materials. Thereafter, we demonstrate analytical and numerical solutions of a homogeneous electro-elastic body with the Neo-Hookean material model and the extended tube model to express the hyperelastic response. Finally, we use the finite element method to investigate several heterogeneous configurations consisting of soft DEA matrix filled with spherical stiff inclusions with changing volume fraction and ellipsoidal inclusions with varying aspect ratio.

Simulation of tuning graphene plasmonic behaviors by ferroelectric domains for self-driven infrared photodetector applications

Nanoscale ◽  
2019 ◽  
Vol 11 (43) ◽  
pp. 20868-20875 ◽  
Author(s):  
Junxiong Guo ◽  
Yu Liu ◽  
Yuan Lin ◽  
Yu Tian ◽  
Jinxing Zhang ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Interfacial Effect ◽  
Infrared Photodetector ◽  
The Finite Element Method ◽  
Ferroelectric Domains ◽  
Element Method

We propose a graphene plasmonic infrared photodetector tuned by ferroelectric domains and investigate the interfacial effect using the finite element method.

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