Experimental Analysis for the Vibration Reduction of Steering Wheel Assembly of Agricultural Tractor

2019 ◽  
Author(s):  
Pragati Shelke ◽  
Atul Dhale
Keyword(s):  
Experimental Analysis ◽  
Vibration Reduction ◽  
Steering Wheel ◽  
Agricultural Tractor

scholarly journals Experimental Analysis of Power Flows in the Regenerative Vibration Reduction System with a Magnetorheological Damper

Energies ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 848
Author(s):  
Bogdan Sapiński ◽  
Paweł Orkisz ◽  
Łukasz Jastrzębski
Keyword(s):  
Experimental Data ◽  
Experimental Analysis ◽  
Vibration Reduction ◽  
Mr Damper ◽  
Magnetorheological Damper ◽  
Test Rig ◽  
Instantaneous Power ◽  
Reduction System ◽  
Inertial Energy ◽  
Regenerative Vibration

The aim of the work is to investigate power flows in the vibration reduction system equipped with a magnetorheological (MR) damper and energy regeneration. For this purpose, experiments were conducted in the test rig compound of the shaker and the vibration reduction system (electromagnetic harvester, MR damper, spring) which are attached to the sprung mass. The experimental data acquired under sine excitations enabled us to analyze instantaneous power fluxes, as well as a rate of inertial energy changes in the system.

Experimental investigation of vibration reduction using shape memory alloys

2012 ◽  
Vol 24 (2) ◽  
pp. 247-261 ◽  
Author(s):  
Ricardo AA Aguiar ◽  
Marcelo A Savi ◽  
Pedro MCL Pacheco
Keyword(s):  
Dynamical Systems ◽  
Shape Memory Alloy ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Smart Materials ◽  
Experimental Analysis ◽  
Vibration Reduction ◽  
Dynamical Response ◽  
Temperature Variations ◽  
Experimental Apparatus

Smart materials have a growing technological importance due to their unique thermomechanical characteristics. Shape memory alloys belong to this class of materials being easy to manufacture, relatively lightweight, and able to produce high forces or displacements with low power consumption. These aspects could be exploited in different applications including vibration control. Nevertheless, literature presents only a few references concerning the experimental analysis of shape memory alloy dynamical systems. This contribution deals with the experimental analysis of shape memory alloy dynamical systems by considering an experimental apparatus consisted of low-friction cars free to move in a rail. A shaker that provides harmonic forcing excites the system. The vibration analysis reveals that shape memory alloy elements introduce complex behaviors to the system and that different thermomechanical loadings are of concern showing the main aspects of the shape memory alloy dynamical response. Special attention is dedicated to the analysis of vibration reduction that can be achieved by considering different approaches exploiting either temperature variations promoted by electric current changes or vibration absorber techniques. The results establish that adaptability due to temperature variations is defined by a competition between stiffness and hysteretic behavior changes.

Investigation of a Vibration Reduction System for Vehicle Seats by a Vibration Model Consisting of a Vehicle, Seat, and Human Body

2013 ◽  
Author(s):  
S. Ota ◽  
S. Nishiyama ◽  
T. Nakamori
Keyword(s):  
Mechanical Properties ◽  
Human Body ◽  
Vibration Reduction ◽  
Steering Wheel ◽  
The Road ◽  
Reduction System ◽  
Vibration Model ◽  
Comparison Results ◽  
Vertical Vibrations ◽  
Calculation System

This paper describes a vibration reduction system that can minimize the vertical vibrations of the human body in a vehicle. This system can control the mechanical properties of the seat cushions, such as the spring constants and damping coefficients. To examine the feasibility of this vibration reduction system, we design a vibration model of both an occupant–seat–steering wheel–pedals–vehicle system and a calculation system. Further, we carry out a numerical analysis to calculate the magnitude of vibrations transmitted from the road surface to the human body based on ISO7096-EM6. Comparison results of the frequency response between the analysis and the experiment indicate the feasibilities of both the vibration model and the analysis method. Furthermore, vibration of the head was reduced 60.1% by controlling the mechanical properties of the seat from 1/5 to 5 times. In summary, the in-vehicle vibration reduction system successfully reduces vibrations from the seat to the human body.

scholarly journals Experimental Analysis Considered the Dynamics of Mobiles Agricultural Aggregates

1970 ◽  
Vol 66 (1) ◽  
Author(s):  
Mihaela Florentina DAVID ◽  
Gheorghe VOICU ◽  
Ladislau DAVID ◽  
Carmen Otilia RUSĂNESCU
Keyword(s):  
Experimental Analysis ◽  
Agricultural Land ◽  
Traction Force ◽  
Experimental Tests ◽  
Experimental Results ◽  
Steering Wheel ◽  
Vibration Acceleration ◽  
Gear Shift ◽  
The Real ◽  
Real Movement

When working with agricultural mobile aggregate, the traction force of equipment and the speed of the real movement vary due to actual terrain irregularities, appearing also vibration of the gears axes and of the tractor chassis. Starting from these considerations, the paper presents results of experimental tests to move on agricultural land of a aggregate consists of a U-650M tractor and of a trees vineyard attachment RPV-2, on the push force of the attachment on the gear-shift bar to the tractor, traction force, vibration acceleration in three points on the tractor and tractor skidding for three different speeds of travel. It shall, also the testing equipment and how to catch the gage for acquisition the necessary data records. Using known relations in the study of the dynamics of the mobile aggregates, was achieved a modelling program of the traction parameters, in MathCad program, with which help were determined and set graphic the variations of the push force on the gear-shift bar, the traction force and the vibration acceleration to the steering wheel of the tractor. Based on experimental results obtained, the calculation program was checked and improved. The results presented in the paper are of interest to specialists in the study of the dynamic agricultural mobile aggregate, and the modelling program developed can be used to determine the parameters for the traction and for other types of aggregates to the movement on land with other features than used and tested.

Study of Vibration from Steering Wheel of an Agricultural Tractor

2012 ◽  
Vol 5 (2) ◽  
pp. 441-454 ◽  
Author(s):  
Ananth Sakthivel ◽  
Sethuraman Sriraman ◽  
Rakesh B Verma
Keyword(s):  
Steering Wheel ◽  
Agricultural Tractor

scholarly journals OPTIMALISASI TEKANAN SHOCK ABSORBER DAN TEKANAN PEGAS COIL TERHADAP GETARAN MOBIL

2020 ◽  
Vol 3 (01) ◽  
pp. 5-10
Author(s):  
Listiyono Yono Listiyono ◽  
Nurhadi Nurhadi ◽  
Agus Hardjito
Keyword(s):  
Safety Factor ◽  
Shock Absorber ◽  
Vibration Reduction ◽  
Experimental Methods ◽  
Gas Pressure ◽  
Steering Wheel ◽  
Coil Spring ◽  
Two Factors ◽  
Bouncing Effect

Safety and comfort are the valuable factor for the driver. One of the safety factor refers to the steering accuracy. Steering wheel hardness must be soft when turning but remain stable in straight track. The comfort factor refers to the bouncing effect when the car passing in rough track. Those two factors is depend on the shock absorber components. This study aims to know the optimum gas pressure and spring pressure to obtain the maximum vibration reduction. This study use the experimental methods use the 6 bar, 8 bar, and 10 bar of absorber pressure. The spring pressure used in this study is 20 , 25  dan 30 (Kg/cm2). The data obtained were analyzed with MINITAB software. From the results of research on Optimizing Shock Absorber Pressure and Coil Spring Pressure Against Car Vibrations can be concluded as follows: 1. There is an influence of absorber pressure and spring pressure on the suspension on the amount of vehicle vibration. The optimum absorber pressure is 10 (bar). 2. The optimum coil spring pressure at 24 (kg / cm2).

Steering Wheel Vibration Reduction for Agricultural Tractors

2009 ◽  
Author(s):  
Kandavel Gowri Shankar ◽  
Shrikant Samant ◽  
Nrusingh Mishra ◽  
Mokashi Rajshekar
Keyword(s):  
Vibration Reduction ◽  
Steering Wheel ◽  
Agricultural Tractors ◽  
Wheel Vibration

AVALIAÇÃO DOS NÍVEIS DE VIBRAÇÃO TRANSMITIDOS AO CORPO HUMANO POR UM TRATOR AGRÍCOLA

2017 ◽  
Vol 32 (4) ◽  
pp. 322
Author(s):  
Roger Oliva Felix ◽  
Victor Manieri Schutzer ◽  
João Eduardo Guarnetti dos Santos
Keyword(s):  
Data Collection ◽  
Human Body ◽  
Experimental Analysis ◽  
Whole Body ◽  
Agricultural Machinery ◽  
Study Objective ◽  
Acceleration Data ◽  
Agricultural Tractors ◽  
Agricultural Tractor

O estudo teve como objetivo analisar os níveis de vibração transmitidos ao corpo humano por um trator agrícola, buscando adequar-se aos aspectos ergonômicos. Para realização dessa análise foi necessário um instrumento de medição (acelerômetro), que realiza a aquisição de dados mostrando a aceleração resultante no assento do operador. Os resultados obtidos mostraram situações em que os níveis de vibração estão além do recomendado, possibilitando, dessa forma, uma oportunidade de melhoria referente aos níveis de vibração, com o intuito de isolar os níveis de vibração transmitidos ao operador e de adequar ou aproximar os níveis de vibração satisfatórios, conforme a norma descritiva sobre vibrações de corpo inteiro.PALAVRAS-CHAVE: ergonomia de produto, tratores agrícolas, análise experimental em máquinas agrícolas. EVALUATION OF VIBRATION LEVELS TRANSMITTED BY AN AGRICULTURAL TRACTOR TO  HUMAN BODYABSTRACT: The study objective to analyze the levels of vibration transmitted to the human body by an agricultural tractor, seeking to adapt to the ergonomic aspects. For It was necessary an instrument of measuring that performs  the seat acceleration data collection. The obtained results showed situations in which the levels of vibration are above of the recommended.  Thus, there is an opportunity of improvement, as to isolate the levels of vibration transmitted to the operator, as to adapt the levels of satisfactory vibration according to the standard of whole body vibrations.KEYWORDS: ergonomics of product, agricultural tractors, experimental analysis in agricultural machinery

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