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Prediction of Burst Pressure of a Radial Truck Tire Using Finite Element Analysis  [PDF]
Kyoung Moon Jeong
World Journal of Engineering and Technology (WJET) , 2016, DOI: 10.4236/wjet.2016.42022
Abstract: This paper is concerned with the numerical prediction of the burst pressure of a radial truck tire. Even though relatively rare, the tire fracture or failure brings up a big accident. Especially, the tire burst or rupture is a rapid loss of inflation pressure of a truck and bus tire leading to an explosion. The tire burst pressure, under this extreme loading condition, can be predicted by identifying the pressure at which the cord breaking force of the composite materials is attained. Recently, the use of finite element analysis in tire optimal design has become widely popular. In order to determine the burst pressure of a radial truck tire, an axisymmetric finite element model has been developed using a commercial finite element code with rebar element. The numerical result shows that the bead wire among the various layers modeled the rebar element breaks off first in the radial truck tire. The finite element modeling with the rebar element on the bead wire of a radial truck tire is able to well predict the tire burst pressure identifying the pressure at which the breaking force of steel bead wires is reached. The model predictions of tire burst pressure should be correlated with test data, in which case the tire is hydro-tested to destruction. The effect of the design change with the different bead structure on the tire burst pressure is discussed.
Effect of Pressure Angle on Transmission Efficiency of Helical Gears  [PDF]
Prof. Pande A. M.,,Prof. Dr. Kharde Y.R.
International Journal of Innovative Technology and Exploring Engineering , 2013,
Abstract: In this study, a test methodology for measuring load-dependent (mechanical) power losses of helical gear pairs is developed. A high-speed four-square type test machine is adapted for this purpose. Several sets of helical gears having 3 different pressure angles are manufactured, and their power losses under dip lubricated conditions are measured at various speed and torque levels. A general trend found in the experimental testing was that the higher the pressure angle, the lower the temperature-increase of the lubricant across the gearbox while being tested at identical conditions. This is an indication of the improved efficiency. Finally it was concluded that high-pressure angle helical gears (25°) pressure angle running at high speed provide improved performance over more traditional gear pressure angles (20°).
Improvement of wheel skidder tractive performance by tire inflation pressure and tire chains
Stanimir Stoilov
Croatian Journal of Forest Engineering , 2007,
Abstract: The motion resistance ratio, gross traction ratio and net traction ratio of a wheel cable skidder were determined and mathematical models derived for three tire inflation pressure values with or without tire chains on forest road in mountainous conditions.The motion resistance ratio increases with the increase of tire inflation pressure. On the contrary, the gross traction ratio increases with the decrease of tire inflation pressure. However, when the tires are equipped with tire chains the skidder motion resistance is higher. The motion resistance ratio with tire chains also increases with the decrease of tire inflation pressure due to windage between the tires and chains, which results in lower tractive performance of tire chains.Therefore, by using tire chains, an increase of gross tractive ratio could be achieved, as well as the increase of motion resistance ratio compared to tires without chains.The results of the study show that it is strongly recommended to use tire chains as tightly as possible.
Implementation of Tire Pressure Controlling System for Vehicles .
B.Maheshwaran,A.Arjun,M.Senthil Kumar
International Journal of Engineering Sciences & Research Technology , 2013,
Abstract: Today safety of the human life is major concern. Nowadays about 75% of the causalities has been observed due to the accidents during transport of the vehicle. These are especially due to the flaw in the tire pressure. Tire break avoiding is very important for safe driving in superhighway. So we need a controlling system not monitoring system to maintain the tire pressure as inflation pressure recommended by the tire company.
Dynamic Tire Pressure Sensor for Measuring Ground Vibration  [PDF]
Qi Wang,James Gregory McDaniel,Ming L. Wang
Sensors , 2012, DOI: 10.3390/s121115192
Abstract: This work presents a convenient and non-contact acoustic sensing approach for measuring ground vibration. This approach, which uses an instantaneous dynamic tire pressure sensor (DTPS), possesses the capability to replace the accelerometer or directional microphone currently being used for inspecting pavement conditions. By measuring dynamic pressure changes inside the tire, ground vibration can be amplified and isolated from environmental noise. In this work, verifications of the DTPS concept of sensing inside the tire have been carried out. In addition, comparisons between a DTPS, ground-mounted accelerometer, and directional microphone are made. A data analysis algorithm has been developed and optimized to reconstruct ground acceleration from DTPS data. Numerical and experimental studies of this DTPS reveal a strong potential for measuring ground vibration caused by a moving vehicle. A calibration of transfer function between dynamic tire pressure change and ground acceleration may be needed for different tire system or for more accurate application.
Effect of Tire Repeated Root Modal on Tire Modelling with Experimental Modal
Effect of Tire Repeated Root Modal on Tire Modelling with Experimental Modal
 [PDF]

Zhenfeng Wang,Yongchang Du,Mingming Dong,Liang Gu
- , 2017, DOI: 10.15918/j.jbit1004-0579.201726.0110
Abstract: The effect of tire repeated root modal (RRM) on tire modeling with an experimental modal is studied. Firstly, a radial tire with radial and tangential RRMs is tested and analyzed. By multi-point exciting of the radial tire, a multiple reference frequency domain method based on a least squares (LMS PolyMAX) algorithm is used to identify modal parameters. Then, modal stability diagram (MSD), modal indication function (MIF) and modal assurance criteria (Auto-MAC) matrix are utilized to induce multiple inputs multiple outputs (MIMO) frequency response function (FRF) matrixes. The tests reveal that notable repeated roots exist in both radial and tangential response modes. Their modal frequencies and damping factors are approximately the same, the amplitudes of modal vectors are in the same order of magnitude, and the mode shapes are orthogonal. Based on the works mentioned, the method of trigonometric series modal shapes fitting is adopted, the effects of RRM model on tire modeling with a vertical experimental modal are discussed. The final results show that the effects of considering the RRM shapes are equivalent to the tire mode shapes depended on rotating the tire's different exciting points during tire modeling, and since considering the RRM, the tire mode shapes can be unified and fixed during tire modeling.
The effect of tire repeated root modal (RRM) on tire modeling with an experimental modal is studied. Firstly, a radial tire with radial and tangential RRMs is tested and analyzed. By multi-point exciting of the radial tire, a multiple reference frequency domain method based on a least squares (LMS PolyMAX) algorithm is used to identify modal parameters. Then, modal stability diagram (MSD), modal indication function (MIF) and modal assurance criteria (Auto-MAC) matrix are utilized to induce multiple inputs multiple outputs (MIMO) frequency response function (FRF) matrixes. The tests reveal that notable repeated roots exist in both radial and tangential response modes. Their modal frequencies and damping factors are approximately the same, the amplitudes of modal vectors are in the same order of magnitude, and the mode shapes are orthogonal. Based on the works mentioned, the method of trigonometric series modal shapes fitting is adopted, the effects of RRM model on tire modeling with a vertical experimental modal are discussed. The final results show that the effects of considering the RRM shapes are equivalent to the tire mode shapes depended on rotating the tire's different exciting points during tire modeling, and since considering the
The Effect of Tire Design Parameters on the Force Transmissibility  [PDF]
Woo Cheol Park, Hee Kyu Lim, Kyoung Moon Jeong, Tan Wan Kim
Open Journal of Applied Sciences (OJAppS) , 2018, DOI: 10.4236/ojapps.2018.810035
Abstract: A finite element modeling technique is employed in this paper to predict the force transmissibility of tire-cavity-wheel assembly under a free-fixed condition. The tire and wheel force transmissibility is factor in structure borne road noise performance. In order to improve structure borne noise, it is required to lower the 1st peak frequency of force transmissibility. This paper presents an application of finite element analysis modeling along with experimental verification to predict the force transmissibility of tire and wheel assembly. The results of finite element analysis for force transmissibility are shown to be in good agreement with the results from the indoor test. In order to improve structure borne noise, it is required to lower the 1st peak frequency of force transmissibility. And, the effect of the tire design parameters such as the density and modulus of a rubber and the cord stiffness on the force transmissibility is discussed. It is found that the prediction of the force transmissibility model using finite element analysis will be useful for the improvement of the road noise performance of passenger car tire.
Design and Implementation of Diaphragm Type Pressure Sensor in a Direct Tire Pressure Monitoring System (TPMS) for Automotive Safety Applications  [PDF]
Ambarish G. Mohapatra
International Journal of Engineering Science and Technology , 2011,
Abstract: Correct tire pressure is a critical factor in the safe operation and performance of a motor vehicle. Over inflated tires often result in unnecessary tire wear, reduced gas mileage and less than optimal vehicle performance as well as vehicle safety. A tire pressure monitoring system (TPMS) monitors air pressure and temperature in thetires of a motor vehicle, and that generates a signal indicative of the tire pressure and temperature in each of the tires to increase the vehicle performance and safety. Present work is based on the design of tire pressure monitoring system which includes pressure sensor, an RF-communication unit, signal processing unit and display unit. To sense the changes in inflation pressure, a diaphragm based pressure sensor was designed to be used in pressure measurement of the tube. The inflation pressure was transmitted to the receiver side using ISM (Industrial, Scientific and Medical) band at 433.92MHz and ASK (Amplitude-Shift Keying) modulation scheme. The pressure sensor was tested at room temperature as well as at elevated temperature of 33°C - 70°C. Finally, the collected data was analyzed and different sensor characteristics were found out.
Characterization of MEMS Automotive Sensor for Tire Pressure Monitoring System  [PDF]
Aini Hussain,M.A. Hannan,Hilmi Sanusi,Azah Mohamed
Journal of Applied Sciences , 2006,
Abstract: Assessment to the investigated emerging sensor technologies indicates that the capacitive Microelectro-mechanical System (MEMS) pressure sensor has the highest potential used for the development of tire Pressure Monitoring System (TPMS). The potential owes to its robustness, small size and low power consumption, besides fitted well in total electronic system integration. This study describes the basic configuration, operating principle and experimental results of MEMS sensor for the development of TPMS. In addition, the application performance and experimental set up of the sensor are also discussed in this paper. Input and output pins configurations of the MEMS sensors at both standby and measured modes are studied, in order to relate to their unique construction. The threshold check is used by the tire pressure monitoring system through sensed signal extracted the data acquisition environment of the MEMS sensor. This study provides preliminary insight of using MEMS pressure sensor in a TPMS.
Tractor perfomance as a function of speed and seeder?s tire inflation pressure
Furlani, Carlos Eduardo Angeli;Cortez, Jorge Wilson;Toledo, Anderson de;Silva, Rouverson Pereira da;Grotta, Danilo Cesar Checchio;Reis, Gustavo Naves dos;
Ciência Rural , 2010, DOI: 10.1590/S0103-84782010005000124
Abstract: the performance of agricultural tractors under field conditions results from the interaction between tire and wheel affected by displacement speed. this work was developed to assess the performance of an agricultural tractor under different seeder's tire inflation pressure (518; 483 and 414kpa) and in two different gears providing speeds of 3.0 and 6.0km h-1. the experiment was performed at jaboticabal campus of s?o paulo state university (unesp). the experimental design used was entirely randomized in a 2-factor factorial design (3x2) with four replications. the draft force was influenced by the gear as well as by the required power; however, tire inflation pressure in the seeder did not change these parameters. also, fuel consumption was influenced only by the tractor gear. energy consumption was greater as speed increased, caused by gear shifting. the displacement speed was greater for the 518kpa pressure due to a lesser slippage in the seeder under this pressure. tractor slippage did not change.
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