Experimental validation of a tractor overturning simulation

Chisholm, C.J.

doi:10.1016/0021-8634(79)90080-5

Cited by 26 publications

(12 citation statements)

References 3 publications

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“…His model was used to simulate overturns down steep slopes and assess the amount of energy absorbed by the ROPS during a wide range of overturning accidents (Chisholm, 1979b). The model was validated by experiments in which a tractor was overturned down a simulated bank about 2 m high (Chisholm, 1979c). In order to more accurately simulate multiple rollovers, a more general relationship between the transverse ground frictional force and the normal force was developed that included the slide distance and sinkage (Chisholm 1982).…”

Section: Stability and Non-continuous Roll Prediction Model For Tractmentioning

confidence: 99%

Modification and Evaluation of Continuous Roll Prediction Model for Front Drive Mowers

Wang¹,

Ayers²,

Comer³

2005

2005 Tampa, FL July 17-20, 2005

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Section: Stability and Non-continuous Roll Prediction Model For Tractmentioning

confidence: 99%

Modification and Evaluation of Continuous Roll Prediction Model for Front Drive Mowers

Wang¹,

Ayers²,

Comer³

2005

2005 Tampa, FL July 17-20, 2005

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“…Rollover research investigating ROPS energy absorption requirements began in the 1950s. Moberg [ 5 ], Chisholm [ 6 , 7 , 8 , 9 ] and Schwanghart [ 10 , 11 ] were pioneering researchers who advanced the field. Their publications explain various methodologies used in experimental work from which theoretical models were conceived and international testing procedures derived [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

“…As a result of the efforts of those pioneering researchers, the normalized certification tests of tractor ROPS are today performed by various organizations according to internationally standardized static procedures, such as: the Organisation for the Economic Cooperation and Development (OECD), the International Organization for Standardization (ISO) and the European Community (EC). Unfortunately, given their age and language of publication, not all the works of Moberg [ 5 ], Chisholm [ 6 , 7 , 8 , 9 ] and Schwanghart [ 10 , 11 ] are readily accessible. This has hindered the ability of contemporary researchers to revisit the underlying assumptions and the original tractor parameters used in those early studies.…”

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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“…Pioneering investigations on the mechanism of tractor rollover have established fundamental theories explaining how a tractor behaves under certain ground conditions. The mathematical models thus generated further provide the basic concepts of consideration for tractors in dynamic, static, and quasi-static states [2][3][4][5][6][7][8][9][10][11][12][13][14][15] . Indicators of tractor stability obtained from mathematical models provide a simple way of describing vehicle stability.…”

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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Experimental validation of a tractor overturning simulation

Cited by 26 publications

References 3 publications

Modification and Evaluation of Continuous Roll Prediction Model for Front Drive Mowers

Modification and Evaluation of Continuous Roll Prediction Model for Front Drive Mowers

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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