High-efficiency modal analysis and deformation prediction of rice transplanter based on effective independent method

Ji, Jiangtao; Chen, Kaikang; Jin, Xin; Wang, Zhaoyang; Baoqiong, Dai; Fan, Jihua; Lin, Xiaojun

doi:10.1016/j.compag.2019.105126

Cited by 15 publications

(6 citation statements)

References 16 publications

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“…3) The road conditions of the harvester are mostly rural roads and paddy fields after drying, and the combine harvester has a good vibration isolation effect by contacting the ground through the track with small rigidity. Its excitation frequency is generally 0-3 Hz [34] .…”

Section: Frequency Of Excitation Sourcementioning

confidence: 99%

Vibration analysis and topology optimization of the header of full-feeding rice combine harvester

Tang,

Xu,

Zhu

et al. 2023

International Journal of Agricultural and Biological Engineering

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The header frame of full-feeding rice combine harvester was characterized by severe vibration due to the excitation force generated by the movement of each working part. In order to solve the problem, the parametric model of the header frame was established, and the accuracy of the finite element model was verified by comparison of the results of the free modal analysis and free vibration modal test based on Eigensystem Realization Algorithm (ERA). Then the constrained modal frequencies were calculated and compared with the external excitation source frequencies, the results showed that the first and eighth order modal natural frequencies were coupled with the excitation frequencies of the threshing cylinder and the engine respectively, which were apt to resonate. To avoid resonance and achieve lightweight design, topology optimization, and finite element analysis were carried out. The optimization results showed that the strength and rigidity meet the requirements and the weight was 14.17% lower than before. The first and eighth order modal natural frequencies were far away from the excitation frequencies range of the threshing cylinder and engine, and the frequencies were far away from the range of each excitation frequency, which effectively avoided the occurrence of resonance. Field experiments showed that the peak value of the vibration acceleration in the three directions of the 8 measuring points of the optimized header frame was significantly reduced, which effectively reduced the vibration of the header frame during harvest. This study provides a method for obtaining the vibration characteristics of key components of agricultural machinery and provides a reference for the weight and vibration reduction of header frames of rice, wheat, rape, and other crop combine harvesters.

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Section: Frequency Of Excitation Sourcementioning

confidence: 99%

Vibration analysis and topology optimization of the header of full-feeding rice combine harvester

Tang,

Xu,

Zhu

et al. 2023

International Journal of Agricultural and Biological Engineering

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“…The modal analysis of different structures o the frame was carried out by ANSYS Workbench 18.0 to explore the influence of instal lation position and diameter on the natural frequency, as shown in Figure 9. According to the resonance theory, resonance occurs when the natural frequency of the structure has the following relationship with the external excitation frequency [34], that is:…”

Section: Optimization and Analysis Of Framementioning

confidence: 99%

Resonance Analysis and Vibration Reduction Optimization of Agricultural Machinery Frame—Taking Vegetable Precision Seeder as an Example

Wang

et al. 2021

Processes

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In order to solve the problem of vigorous vibration of agricultural machinery frames, taking a vegetable precision seeder as an example, the concept of vibration reduction was proposed. The modal analysis of the frame was carried out, and the accuracy of the finite element model was verified by comparing the modal test of multipoint input and multipoint output (MIMO) and simulation results. Additionally, the main frequency of engine vibration was the main excitation source of frame resonance. According to the modal shapes, it was proposed to increase the fixed beam structure and to carry out simulation tests. The time-domain signal of the maximum deformation position in the first-order vibration mode was measured, and the vibration spectrum analysis maps before and after optimization were obtained by Fourier transform. A field experiment showed that the seeding quality of the whole machine was significantly improved after optimization. This study provides a reference for the analysis of vibration characteristics and the vibration reduction design of the agricultural machinery equipment.

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“…The sonor planting system will have an impact on the need for too much rice seed, the uniformity of growing rice plants is low, and the spacing of the plants becomes denser and irregular. Therefore, the sonor method needs to be evaluated, especially in precision agriculture where the precise number of planted seeds [6][7][8]. The tight and irregular spacing causes the low intensity of incoming sunlight and poor air circulation in rice cultivation.…”

Section: Introductionmentioning

confidence: 99%

Performance test and economic analysis of paddy direct seed planter modified pulled by tractor (amator) in tidal swamp, South Sumatra

Herwenita,

Suprihatin,

Raharjo

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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Lack of labor is another obstacle to the characteristics of the tidal swamp land itself so that the use of agricultural equipment and machinery such as Amator can be used as solution. This paper aims to analyze the use of the amator in terms of technical and economic aspects of the equipment so that it is known whether it is efficient and profitable for farmers. Data collection was carried out through observation of equipment performance tests in the field and key informant interviews. This research was carried out in Sri Katon Village, Air Salek District, Banyuasin Regency. The data observed are technical performance including work capacity and work efficiency, as well as economic analysis in the form of basic costs and break-even point of using equipment. The results of the performance test show that the amator has a high efficiency (87.52%) with an effective working capacity value of 0.6244 ha hr−1 (1.6012 hr ha−1). The basic cost incurred for the use of the amator is IDR 193.145 ha−1 with a BEP of 16,8 ha yr−1. The use of amator with seeds only 35 kg ha−1 can save planting costs of IDR 200,000 ha−1 compared to the farmer practice.

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High-efficiency modal analysis and deformation prediction of rice transplanter based on effective independent method

Cited by 15 publications

References 16 publications

Vibration analysis and topology optimization of the header of full-feeding rice combine harvester

Vibration analysis and topology optimization of the header of full-feeding rice combine harvester

Resonance Analysis and Vibration Reduction Optimization of Agricultural Machinery Frame—Taking Vegetable Precision Seeder as an Example

Performance test and economic analysis of paddy direct seed planter modified pulled by tractor (amator) in tidal swamp, South Sumatra

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