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Measurement of stiffness and damping coefficient of rubber tractor tires using dynamic cleat test based on point contact model

引用

International Journal of Agricultural and Biological Engineering 2021年第1期14卷 157-164页

作者： hogil yoo Jooseon Oh Woo-Jin Chung Hyun-Woo Han Ji-Tae Kim Young-Jun Park yoonna Park Department of Biosystems&Biomaterials Science and Engineering Seoul National UniversitySeoul 08826Republic of Korea Global Smart Farm Convergence Major College of Agriculture and Life SciencesSeoul National UniversitySeoul 08826Republic of Korea Research Institute of Agriculture and Life Sciences College of Agriculture and Life SciencesSeoul National UniversitySeoul 08826Republic of Korea Research and Development Institute Tongyang Moolsan Co.Ltd.Gongju 32530Republic of Korea

The ride vibration of a tractor is affected mostly by the stiffness and damping coefficient of the seat suspension,cabin suspension,cabin rubber mounts,and rubber ***,in the case of rubber tractor tires,the stiffnesses and damping coefficients have not been researched adequately thus far,and it is not simple to measure these *** this study,a method for measuring and analyzing the stiffnesses and damping coefficients of rubber tractor tires,which were the input parameters for the tractor ride vibration simulation,was *** cleat test,proposed in this study,did not require separate and complicated test equipment,unlike the conventional *** test was conducted simply by measuring acceleration under the driving conditions of the vehicle without detaching tires from the vehicle body or setting up additional test *** on the ground-vertical acceleration data obtained,the stiffness was calculated using the logarithmic decrement method,and the damping coefficient was calculated using least squares exponential curve *** result of the cleat test indicated that the front tires had stiffnesses of 486.08-570.69 kN/m and damping coefficients of 4.02-4.52 kN·s/m;the rear tires had stiffnesses of 409.42-483.79 kN/m and damping coefficients of 2.21-2.67 kN·s/*** the test,40 mm height cleats were installed on the track and the speed of the tractor was set to 7 and 10 km/h,which were the most common speeds during the *** study is meaningful in that it has presented a new method that improves the practicality of results,reduces cost,and simplifies the test process for measuring the stiffnesses and damping coefficients of rubber tractor tires.

关键词： ride vibration rubber tractor tire stiffness damping coefficient cleat test point contact model

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