Finite Element Modeling and Simulation of Thermal Distribution on Full and Ventilated Electric Vehicle Disk Brake

2014 ◽  
Vol 699 ◽  
pp. 372-377
Author(s):  
Eko Prasetya Budiana ◽  
Ubaidillah ◽  
Hafidz Adyatama ◽  
Dominicus Danardono Dwi Prija
Keyword(s):  
Mechanical Energy ◽  
Heat Distribution ◽  
Brake Disk ◽  
Disk Brake ◽  
Thermal Distribution ◽  
Vehicle Load ◽  
Ansys Cfx ◽  
Simulation Results ◽  
Braking Process ◽  
Full Disk

This paper examines the phenomenon of heat distribution on the disk while braking. Heat distribution on the brake disk is caused by the change of the kinetic energy into the mechanical energy. The energy change occurs during the process of braking due to the friction between the surfaces of the disk with the caliper pad. Friction also results in the increase of temperature, This phenomenon is very important to be highlighted in order to learn the characteristic of heat distribution occurs on the disk with different disk types namely ventilation disk and full disk. In addition, this study is also aimed to find out the effect of vehicle load on disk temperature during braking process. The purpose of this research is to analyze the thermal distribution of a vehicle disk brake. The thermal distribution on the disk brake is investigated using ANSYS CFX. This simulation results provide useful information for identifying the influence of different models of disks brake as well as the vehicle load with regard to the distribution of heat that occurs during the process of braking.

The Effect of Rigid Particle on Friction Properties of Automotive Disk Brake Based on a Local Modeling

2019 ◽  
Vol 141 (4) ◽  
Author(s):  
Zhishuai Wan ◽  
Xiandong Liu ◽  
Yingchun Shan ◽  
Tian He ◽  
Haixia Wang ◽  
...  
Keyword(s):  
Brake Pad ◽  
Rigid Particle ◽  
Brake Disk ◽  
Friction Mechanism ◽  
Disk Brake ◽  
Local Modeling ◽  
Reinforcing Fillers ◽  
Effect Of Particle Size ◽  
Simulation Results ◽  
Insight Into

To quantify the friction mechanism of the interface of the brake disk-pad pair, an analytical model of coefficient of friction (COF) is established from the perspective of contact mechanics. The model takes into account the surface topography of the disk, mechanical properties of brake pair, and the ingredients of the brake pad. As the reinforcing fillers, the effect of particle size and amount on the COF are analyzed, and the simulation results are consistent with the experimental data. The model and results presented here offer some insight into real brake pair design.

Simulation of Nonlinear Pyroelectric Response of Ferroelectrics near Phase Transition: Fractional Differential Approach

2020 ◽  
Vol 992 ◽  
pp. 843-848
Author(s):  
L. Moroz ◽  
Anna Maslovskaya
Keyword(s):  
Pyroelectric Coefficient ◽  
Ferroelectric Crystal ◽  
One Dimensional ◽  
Differential Approach ◽  
Thermal Distribution ◽  
Pyroelectric Current ◽  
Fractional Differential ◽  
Ferroelectric Single Crystal ◽  
Simulation Results ◽  
Pyroelectric Response

The paper is devoted to mathematical modeling pyroelectric current of ferroelectric single crystal under the conditions of intensive light heating in view of fractal behavior of these materials. The proposed approach is based on numerical simulation of thermal distribution in a ferroelectric sample using time fractional operator as well as computation of pyroelectric response. The simulation results for typical TGS ferroelectric crystal were described in one-dimensional case of the model in comparison with experimental data. Pyroelectric signals depending on temperature pyroelectric coefficient and thermal physical characteristics were also analyzed.

CFD Virtual Testing for Resistance, Wind and Current Loads on a Supply Boat

2012 ◽  
Author(s):  
Daniel Fonseca de Carvalho e Silva
Keyword(s):  
Numerical Approach ◽  
Interfacial Effects ◽  
Environmental Loads ◽  
Towing Tank ◽  
Cfd Models ◽  
Fluid Resistance ◽  
Ansys Cfx ◽  
Mesh Density ◽  
Simulation Results ◽  
Icem Cfd

Ship and platforms environmental loads are often predicted by model scale experiments or empirical calculations only. This paper presents the application of a commercial CFD (Computational Fluid Dynamics) software as a numerical approach to calculate the flow around a supply boat considering current, wind loads and fluid resistance determination. Since, owing to many practical situations, free surface effects can be neglected, the above and underwater problems can be uncoupled and independently evaluated, although for higher Froude number cases in the resistance determination the interfacial effects have to be considered. Throughout this paper, the assumptions adopted and the boundary conditions applied are discussed. All meshes were developed on ICEM CFD® and appropriate mesh density studies indicate that meshes with approximately 2 million nodes can represent the experiments accurately. The simulations were conducted using the ANSYS CFX® solver, using Perl scripting for automatic evaluation of multiple run settings and simulation execution at Petrobras Research Center Clusters. The results for each case are compared with either towing tank or wind tunnel experimental data, both harvested at IPT (Instituto de Pesquisas Tecnológicas). The comparison between simulation results and experiments allows the analysis of the present CFD models benefits and limitations, providing guidelines for future similar studies. The overall match between laboratory and virtual tests results supports the expansion of this procedure to other vessels and offshore floating units.

Numerical Simulation of the Casting Process with Coupled Thermal and Stress Field

2010 ◽  
Vol 29-32 ◽  
pp. 1878-1882 ◽  
Author(s):  
Jian Qiang Zhou ◽  
Fa Zhan Yang ◽  
De Sheng Li
Keyword(s):  
Numerical Simulation ◽  
Stress Field ◽  
Complex Structure ◽  
Solidification Process ◽  
Casting Process ◽  
Stress Fields ◽  
Cooling Process ◽  
Thermal Distribution ◽  
Simulation Techniques ◽  
Simulation Results

To understand the thermal distribution in a complex structure and high quality linkage casting, a mathematical model of temperature and stress field was established. Numerical simulation techniques was applied by using Procast software in the temperature and stress fields of solidification process, and the foundry defect such as old lap, misrun, shrinkage and dispersed shrinkage was predicted. The stress distribution and deformation in cooling process of casting were analyzed. The simulation results can supply a scientific foundation for foundry technology.

Study on Heat Distribution of Pans

2013 ◽  
Vol 821-822 ◽  
pp. 1398-1401
Author(s):  
Wang Yong Lv ◽  
Can Guo ◽  
Hui Qi Wang ◽  
Yun Ling
Keyword(s):  
Computer Simulation ◽  
Geometrical Property ◽  
Regular Polygon ◽  
Outer Edge ◽  
Distribution Model ◽  
Heat Distribution ◽  
Property A ◽  
Thermal Distribution ◽  
Different Shapes

During baking, rectangular pans often overcook the product and round pans can't make full use of the space of the oven. In this paper, two models are build to discuss the heat distribution and uniformity of different shapes pans. Initially build the heat uniformity Model. Through the analysis of the heat distribution and geometrical property, a formula is given to calculate the uniformity of regular polygon. In order to describe the heat uniformity of all kind of shape, the thermal distribution model is build to discuss the heat distribution of the bottom of different pans. By computer simulation, the temperature at the corners of the rectangular pan is the highest and the temperature across the outer edge of the round pan is even, which is consistent with reality.

scholarly journals SIFAT MEKANIK BAHAN KOMPOSIT KAMPAS REM BERBAHAN DASAR SERBUK ARANG KULIT BUAH MAHONI

2017 ◽  
Vol 2 (2) ◽  
pp. 127
Author(s):  
Herwidhi Tri Prabowo ◽  
Sulhadi Sulhadi ◽  
Mahardika Prasetya Aji ◽  
Teguh Darsono
Keyword(s):  
Composite Material ◽  
Brinell Hardness ◽  
Hardness Test ◽  
Alternative Solution ◽  
Coconut Shell ◽  
Carbon Powder ◽  
Natural Material ◽  
Brake Disk ◽  
Disk Brake ◽  
Effective Product

Mahogany bark is one of natural material which not used optimally in society. The overabundance of mahogany bark appearing new problem of garbage which charges an alternative solution creatively and innovatively becomes a new efficient and effective product. An alternative solution of mahogany bark utilization is as organic composite material of disk brake. The making of organic composite material of brake disk firstly is reducing the mahogany bark becomes a homogeneous carbon powder. The mahogany bark was smoked being of carbon and mixed with coconut shell and resin polyester as an adhesive. The organic composite material was produced, tested by Brinell Hardness test and attrition test by varied of composition percentage. There are five kinds of composite material composition had been tested. The result is obtainable of the most precise composition percentage 60% mahogany bark carbon, 15% coconut shell carbon, and 25% resin polyester which has brinell hardness number and attrition massa identically with Standar Nasional Indonesia (SNI). Keywords: mahogany bark, composite material, disk brake, Brinell hardness test, attrition test

scholarly journals A High-Efficiency Energy Harvesting By Using Hydraulic Electromagnetic Regenerative Shock Absorber

2020 ◽  
Author(s):  
Muhammad Yousaf Iqbal ◽  
Zhifei Wu ◽  
Khalid Mahmood
Keyword(s):  
Mathematical Model ◽  
Energy Harvesting ◽  
Shock Absorber ◽  
Mechanical Energy ◽  
Excitation Frequency ◽  
National Standard ◽  
Damping Force ◽  
Damping Characteristics ◽  
Simulation Results ◽  
Regenerative Shock Absorber

Abstract This article intends a hybrid energy harvesting shock absorber design which comprehends energy harvesting of automobile suspension vibration dissipation. A mathematical model of the energy harvesting prototype is established, and simulation results show that the dissipation energy can be recovered by varying the feed module, thereby got the damping forces ratio at different compression and extension stroke. The energy conversion from hydraulic energy to mechanical energy mainly then mechanical energy converted into electrical energy furthermore we can rechange our battery from this recovered energy. The advanced mathematical model and prototype proposed maximum ride comfort meanwhile recovered the suspension energy and fuel saving. This article shows the simulation results verifying it with prototype test results. The damping force of expansion stroke is higher than the damping force of compression stroke. The damping characteristics curves and speed characteristics curves verify the validity by simulation and prototyping damper at different amplitudes of off-road vehicles. The Hydraulic Electromagnetic Regenerative Shock Absorber (HESA) prototype characteristic is tested in which 65 watts recovered energy at 1.67 Hz excitation frequency. So, 14.65% maximum energy recovery efficiency got at 20 mm rod diameter and 8 cc/rev motor displacement. The damping characteristics of the HESA prototype examined and it has ideal performance as the standard requirements of the National Standard QC/T 491–1999.

scholarly journals Design of Hydro Power by Using Turbines Kaplan on The Discharge Channel Paiton 1 and 2

2018 ◽  
Vol 42 ◽  
pp. 01008
Author(s):  
Alvin K. Sosilo ◽  
Harsono Hadi ◽  
Totok Soehartanto
Keyword(s):  
Discharge Channel ◽  
Block Diagram ◽  
Mechanical Energy ◽  
Mechanical Power ◽  
Hydro Power ◽  
Kaplan Turbine ◽  
Turbine Performance ◽  
Power Turbine ◽  
Simulation Results ◽  
The Relationship

Condenser water from the discharge channel PJB Paiton discharged to the sea has the potential mechanical energy, because the flow rate of 7.6 m3 / s (if both discharge PJB Paiton function) and the discharge channel reaches a height of 4m. This paper will describe the design of hydro power (in the form of a block diagram) by using Kaplan turbine driven by utilizing the wastewater condenser. Kaplan turbine performance represented in the form of the relationship between the incoming water flow and the pitch angle (the angle between the propellers with a hub) to the torque generated. The simulation results indicate that the turbine torque is proportional to the mechanical power turbine. The greater the torque, the greater the mechanical power, and vice versa.

The effect of nonlinear material viscosity on the energy harvesting performance of dielectric elastomer generators

2020 ◽  
Vol 31 (7) ◽  
pp. 1029-1038
Author(s):  
Yuanping Li ◽  
Jianyou Zhou ◽  
Liying Jiang
Keyword(s):  
Energy Harvesting ◽  
Conversion Efficiency ◽  
Electromechanical Coupling ◽  
Failure Modes ◽  
Mechanical Energy ◽  
Theoretical Perspective ◽  
Dielectric Elastomer ◽  
Viscosity Model ◽  
Nonlinear Material ◽  
Simulation Results

Dielectric elastomer generators are capable of converting mechanical energy from a variety of sources into electrical energy. The energy harvesting performance depends on the interplay between electromechanical coupling, material viscosity, and multiple failure modes. Experiments also suggest that the material viscosity of dielectric elastomers is deformation-dependent, which makes the prediction of the performance of dielectric elastomer generators more challenging. By adopting the coupled field theory, finite-deformation viscoelasticity theory, and the theory for polymer dynamics, this work investigates the harvested energy and conversion efficiency of dielectric elastomer generators from theoretical perspective. By comparing the simulation results from the nonlinear viscosity model to the experimental data and the simulation results from the linear viscosity model, we further examine the possible factors that may strongly influence the performance of dielectric elastomer generators. It is found that dielectric elastomer generators exhibit higher harvested energy when nonlinear material viscosity is considered. Moreover, by selecting a higher voltage of the power supply for the generator, the conversion efficiency of dielectric elastomer generators can be greatly improved. The theoretical framework in this study is expected to offer some new insights into optimizing the design of dielectric elastomer generators and thus improving their performance.

Application ANSYS CFX in Modeling Turbine Blade

2009 ◽  
Vol 626-627 ◽  
pp. 593-598
Author(s):  
Li Feng Yang ◽  
Shu Ren Zhang ◽  
W.N. Liu ◽  
Yu Yang ◽  
Y.J. Zhang
Keyword(s):  
Numerical Simulation ◽  
Turbine Blade ◽  
Mechanical Energy ◽  
Main Shaft ◽  
Geometric Data ◽  
Ansys Cfx ◽  
Simulation Calculation ◽  
Main Component

The main component of turbine is made up of stator and rotor, w hose function is to transform liquid energy in to mechanical energy on the main shaft. ANSYS CFX－BladeGen is applied to model turbine , ANSYS CFX－TurboGrid is applied to create a mesh for an turbine blade and then numerical simulation calculation on the obtained model is conducted. In the fact, the result of the above calculation indicates that ANSYS CFX BladeGen is more convenient and swift to fulfill the modeling request of turbine blade. When the performance of the turbine blade is achieved, these blades’ geometric data can be directly exported to Pro/ENGINEER or AutoCAD so as to further CAD and CAM.

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