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Energy Absorption in Actual Tractor Rollovers with Different Tire Configurations
Enrico Capacci1, Bruno Franceschetti1, Andrew Guzzomi2,3
1Department of Agricultural and Food Sciences, University of Bologna, Viale G. Fanin 50, 40127 Bologna, Italy.
Summary
Tractor tire width significantly impacts the energy absorbed by the Roll-Over Protective Structure (ROPS) during rollovers. Narrower tires transmit more energy to the ROPS cab frame than wider tires.
Area of Science:
- Agricultural Engineering
- Tractor Safety
- Structural Analysis
Background:
- Tractor rollovers pose a significant safety risk in agriculture.
- Roll-Over Protective Structures (ROPS) are critical safety devices.
- Understanding energy absorption during rollovers is key to improving ROPS design.
Purpose of the Study:
- To investigate energy absorption by a ROPS cab during lateral tractor rollovers.
- To analyze the influence of different tractor wheel configurations on ROPS energy absorption.
- To evaluate the role of silent-blocks in energy partitioning during rollovers.
Main Methods:
- Controlled lateral rollover tests on a narrow-track tractor with a silent-block suspended ROPS cab.
- Testing with wide and narrow wheel configurations.
- Real-time measurement of energy absorbed by the ROPS frame using dynamic load cells and displacement transducers.
- Onboard trilateration for trajectory measurement and video recording.
Main Results:
- The narrow tire configuration consistently resulted in higher energy absorption by the ROPS cab frame compared to the wide tire configuration.
- Tire configuration was found to significantly influence energy partitioning during rollover events.
- Static and dynamic tests highlighted the need for further investigation into silent-block performance.
Conclusions:
- Tractor tire width is a critical factor influencing the energy absorbed by ROPS during lateral rollovers.
- The dynamic behavior of silent-blocks in ROPS cabs requires further study to optimize tractor safety.
- Findings provide valuable data for the design and validation of tractor ROPS.
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