Comparison between a rollover tractor dynamic model and actual lateral tests

Franceschetti, Bruno Maria; Lenain, Roland; Rondelli, Valda

doi:10.1016/j.biosystemseng.2014.08.010

Cited by 38 publications

(17 citation statements)

References 24 publications

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“…In particular, the pictorials that reported the higher comprehension scores were pictorial #3 and pictorial #4, which represented, respectively, the risk of tractor rollover and the severing of foot due to rotating blades. Considering that vehicle overturning is one of the main causes of fatal injuries in agriculture [30], involving machines with on-board drivers [51] and operators [52], the high percentage of correct answers reported for this pictorial can be positively interpreted. Nevertheless, the need to achieve higher comprehension for pictorials yielding the lowest scores (#1 and #2, related to the need of reading the manual before performing any machinery maintenance and to the risk of entanglement in the power take-off, respectively) is particularly urgent, since these pictorials refer to some of the most severe causes of accidents as well [29].…”

Section: Discussionmentioning

confidence: 99%

Conveying Safety Messages on Agricultural Machinery: The Comprehension of Safety Pictorials in a Group of Migrant Farmworkers in Italy

Bagagiolo

Vigoroso

Caffaro

et al. 2019

IJERPH

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The comprehension of safety signs affixed to agricultural machinery is fundamental to warning users about the residual risks which cannot be eliminated with machinery design and the adoption of protections. This is particularly relevant for the migrant workforce, which may encounter some language barriers with written safety communication. The present study aimed to investigate the comprehension of safety signs affixed to agricultural machinery in a group of migrants from both European and non-European countries employed in Italian agriculture. Thirty-seven migrant farmworkers (12 Indians, 17 Pakistanis, and eight Romanians) were individually interviewed to test the comprehension of four safety signs referring to the main causes of fatal and non-fatal injuries caused by interactions with farm machinery. Romanians obtained the highest comprehension performance (68.8% of correct answers), followed by Indians (35.4%), with Pakistanis being last (32.4%). The nationality and the previous experience as a farmworker significantly affected the comprehension of safety signs. The results pointed out the importance of adequately training migrants on the meaning of safety signs. Beside this, the study suggests a redesign of the signs, considering some signs’ features to enhance pictorials’ cross-cultural comprehension.

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Section: Discussionmentioning

confidence: 99%

Conveying Safety Messages on Agricultural Machinery: The Comprehension of Safety Pictorials in a Group of Migrant Farmworkers in Italy

Bagagiolo

Vigoroso

Caffaro

et al. 2019

IJERPH

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“…Despite acknowledgement that tractor designs, and hence their physical parameters and role in farming, have changed since the standardized processes were developed [ 16 , 17 ], there are few investigations of rollover behavior using modern tractors [ 18 , 19 ]. There is, thus, some uncertainty in knowing how the rollover energy is partitioned to the ROPS and other components during contemporary, real rollover events corresponding to common modern tractor configurations.…”

Section: Introductionmentioning

confidence: 99%

Energy Absorption in Actual Tractor Rollovers with Different Tire Configurations

Capacci

Franceschetti

Guzzomi

et al. 2021

IJERPH

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In order to better understand the complexities of modern tractor rollover, this paper investigates the energy absorbed by a Roll-Over Protective Structure (ROPS) cab during controlled lateral rollover testing carried out on a modern narrow-track tractor with a silent-block suspended ROPS cab. To investigate how different tractor set-ups may influence ROPS and energy partitioning, tests were conducted with two different wheel configurations, wide (equivalent to normal ‘open field’ operation) and narrow (equivalent to ‘orchard/vineyard’ operation), and refer to both the width of the tires and the corresponding track. Dynamic load cells and displacement transducers located at the ROPS-ground impact points provided a direct measurement of the energy absorbed by the ROPS cab frame. A trilateration method was developed and mounted onboard to measure load cell trajectory with respect to the cab floor in real-time. The associated video record of each rollover event provided further information and opportunity to explain the acquired data. The narrow tire configuration consistently subjected the ROPS cab frame to more energy than the wide tire arrangement. To better evaluate the influence of the ROPS cab silent-blocks in lateral rollover, static and dynamic tests were performed. The results confirm that tires influence the energy partition significantly and that further understanding of silent-blocks’ dynamic performance is warranted.

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“…Borrowing from these fundamental theories, theoretical and experimental attempts have explored ways of improving tractor stability against rollover. By reconfiguring the tractor, mass distribution parameters (i.e., the tractor front-end weight and moment of inertia), vehicle structural parameters (i.e., front and rear track widths), and component properties (i.e., various properties of the tractor tire) have been shown to determine whether a tractor completely rolls over [24][25][26][27][28][29][30][31][32][33][34][35][36][37][38] . However, none of the cited studies attempted to stabilize a tractor from the initial stage of lateral rollover.…”

Section: Introduction mentioning

confidence: 99%

Factorial significance on tractor stability under variation of terrain roughness employing the Taguchi method

Zhu

Qin

et al. 2018

International Journal of Agricultural and Biological Engineering

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Tractor rollover accidents remain an issue with the development of agricultural mechanization. Adopting the scale-model-based experimental approach, this study investigated the three most influential geometric factors of tractor in various agricultural ground conditions with improved configuration of force sensing system. The initiation of tractor rollover, associated with the tire-ground contact status, was investigated for various front tire types, ballast weights, and rear track widths. Employing the Taguchi method, the ground reaction forces applied to the tractor's uphill wheels were measured and evaluated using stability indicators. By taking this approach, the effects and statistical significance of the three factors and their interactions were examined under various agricultural ground conditions. Results showed that the ballast weight significantly affected the ground contact status of the uphill front tire. The significance of the front tire type gradually increased as the road roughness increased, but dramatically decreased for an extremely rough road surface. Furthermore, none of the factors or interactions, except the factor of the rear track width for relatively rough roads, was statistically significant. The study revealed that not all commonly discussed factors consistently affect tractor stability. The results of the present study are thus expected to provide a reference explaining how to explore the necessity and feasibility of parameter adjustment before reconfiguring a tractor for higher stability. Citation: Li Z, Zhu Z X, Qin J H, Mao E R, Mitsuoka M, Inoue E, et al. Factorial significance on tractor stability under variation of terrain roughness employing the Taguchi method. Int J Agric & Biol Eng, 2018; 11(5): 88-94.

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Comparison between a rollover tractor dynamic model and actual lateral tests

Cited by 38 publications

References 24 publications

Conveying Safety Messages on Agricultural Machinery: The Comprehension of Safety Pictorials in a Group of Migrant Farmworkers in Italy

Conveying Safety Messages on Agricultural Machinery: The Comprehension of Safety Pictorials in a Group of Migrant Farmworkers in Italy

Energy Absorption in Actual Tractor Rollovers with Different Tire Configurations

Factorial significance on tractor stability under variation of terrain roughness employing the Taguchi method

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