Theoretical Overturning Analysis of a 2.6-kW Two-Row Walking-Type Automatic Pepper Transplanter

Iqbal, Zafar; Islam, Nafiul; Ali, Mohammod; Kiraga, Shafik; Kim, Yong Joo; Chung, Soo Young

doi:10.1007/s42853-022-00129-x

Cited by 9 publications

(2 citation statements)

References 37 publications

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“…In Korea, the installation rate of the ROPS is 80.1%, but 15.6% of the ROPSs are then removed due to the conditions of the working environment [5]. It thus appears that, in most countries, tractor accidents are often fatal, which makes crucial the installation of the tractor ROPS with certified safety performance [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of a Virtual Test Model of the Frame-Type ROPS for Agricultural Tractors Using FEA

Lim,

Kim,

et al. 2023

Agriculture

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In this study, a model of the frame-type ROPS (rollover protective structure) for an agricultural tractor was developed using FEA (finite-element analysis). Various boundary conditions were applied as input variables to replace the actual test of the ROPS with a virtual test. An optimization study was carried out based on the boundary conditions of the bolt, considering the ROPS part directly mounted on the tractor and the folding connection to the ROPS. The results of the virtual test were compared with those of the actual test, and the error was determined. The maximum error of the evaluation model was 7.0% for the force applied on the load and 9.6% for the corresponding ROPS deformation. All mounting bolts of the ROPS required modeling. In particular, we had to establish free boundary conditions for axial rotation to implement the folding connection. In addition, a simulation of the frame-type ROPS was conducted according to the mesh size. A convenient simulation time was obtained for a mesh size of 8~10 mm. Compared with the actual test, the accuracy was the highest with a mesh size of 6~8 mm.

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Section: Introductionmentioning

confidence: 99%

Performance Evaluation of a Virtual Test Model of the Frame-Type ROPS for Agricultural Tractors Using FEA

Lim,

Kim,

et al. 2023

Agriculture

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“…A vegetable transplanter is a machine used for transferring vegetable seedlings from the nursery and transplanting them into the soil [1][2][3]. Vegetable transplanters are classified into full-automatic and semi-automatic according to the method of taking the seedlings out of the pot and putting them into the seedling cylinder.…”

Section: Introductionmentioning

confidence: 99%

Experimental Safety Analysis for Transplanting Device of the 4-Bar Link Type Semi-Automatic Vegetable Transplanter

2022

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The goal of this research was to analyze the load and safety of the transplanting device of the 4-bar link type semi-automatic vegetable transplanter under different workload conditions. To measure the strain at the transplanting device, a load measurement system was developed using 15 strain gauges. Field tests were conducted at 4 levels of engine speeds (750, 1000, 1250, and 1500 rpm) and 10 levels of the planting distance (0.29–0.47 m). The static safety factor was defined as the ratio between the strength of the material and the maximum stress in the transplanting device. The calculated stress data were converted from the time domain to the frequency domain using the rain-flow counting methods and Goodman’s Equation. The sum of fatigue damage was acquired based on the Palmgren–Miner’s rule. It was observed that the stresses increased with increasing engine speed and planting distance. The results show the higher engine speed and the longer planting distance will decrease the static safety factor and fatigue life. The static safety factor value was more than 1.0 for all locations and all working conditions. The minimum fatigue life was 49,153.3 h at link A (S_14), under the working condition of engine speed 750 rpm and planting distance of 0.35 m.

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Development of Regression Model for Predicting the Maximum Static Friction Force of Tractors with a Front-End Loader

Kim,

Gim,

Jang

et al. 2023

J. Biosyst. Eng.

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Theoretical Overturning Analysis of a 2.6-kW Two-Row Walking-Type Automatic Pepper Transplanter

Cited by 9 publications

References 37 publications

Performance Evaluation of a Virtual Test Model of the Frame-Type ROPS for Agricultural Tractors Using FEA

Performance Evaluation of a Virtual Test Model of the Frame-Type ROPS for Agricultural Tractors Using FEA

Experimental Safety Analysis for Transplanting Device of the 4-Bar Link Type Semi-Automatic Vegetable Transplanter

Development of Regression Model for Predicting the Maximum Static Friction Force of Tractors with a Front-End Loader

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