An ANSYS/LS-DYNA Simulation and Experimental Study of Sectional Hob Type Laver Harvesting Device

Jiahong Tang, Xiuchen Li, Guochen Zhang, Wei Lu, Shang Ni, Zhenyin Sun, Haidong Li, Cheng Zhao, Hanbing Zhang, Qian Zhang and Gang Mu ()
Additional contact information
Jiahong Tang: College of Mechanical and Power Engineering, Dalian Ocean University, Dalian 116023, China
Xiuchen Li: College of Mechanical and Power Engineering, Dalian Ocean University, Dalian 116023, China
Guochen Zhang: College of Mechanical and Power Engineering, Dalian Ocean University, Dalian 116023, China
Wei Lu: College of Mechanical and Power Engineering, Dalian Ocean University, Dalian 116023, China
Shang Ni: College of Mechanical and Power Engineering, Dalian Ocean University, Dalian 116023, China
Zhenyin Sun: College of Mechanical and Power Engineering, Dalian Ocean University, Dalian 116023, China
Haidong Li: College of Mechanical and Power Engineering, Dalian Ocean University, Dalian 116023, China
Cheng Zhao: College of Mechanical and Power Engineering, Dalian Ocean University, Dalian 116023, China
Hanbing Zhang: College of Mechanical and Power Engineering, Dalian Ocean University, Dalian 116023, China
Qian Zhang: College of Mechanical and Power Engineering, Dalian Ocean University, Dalian 116023, China
Gang Mu: College of Mechanical and Power Engineering, Dalian Ocean University, Dalian 116023, China

Agriculture, 2023, vol. 13, issue 2, 1-18

Abstract: To solve the problems of low net harvesting rate, high loss rate, and uneven stubble height during the harvest of laver, the laver ( Porphyra yezoensis ) was selected as the research object, the analysis of the cultivation mode, biomechanical characteristics, harvesting trajectory and force of laver were carried out. A sectional hob type harvesting device was designed. A rigid-flexible coupling model related to the interaction between the cutting mechanism and the laver was constructed based on ANSYS/LS-DYNA. The Box–Behnken design method was used to simulate the effects of different structural parameters and process parameters on the force of laver cutting, and the bench test of the laver harvesting device was carried out. The simulation results showed that the four factors that significantly affect the force exerted on the laver during cutting in proper order were cutter revolving speed, knife extension length, knife inclination angle and forward velocity. When the combination of the forward velocity, the cutter revolving speed, the knife extension length and inclination angle was 0.77 m/s, 900 r/min, 40 mm, and 110°, respectively, the cutting force on laver was the smallest, which was 4.21 N. The bench test of harvesting performance showed that the cutter revolving speed has a significant impact on the recovery rate, and the forward velocity has a significant impact on the loss rate. When the harvesting speed ratio was λ 4 (the cutter revolving speed was 900 r/min and the forward velocity was 0.77 m/s), the net harvesting rate and the loss rate were 97.45% and 3.38%, respectively, and the cutting proportion of laver can reach 77.5%. The results of the study provide a theoretical basis for the development of harvesting for laver.

Keywords: laver ( Porphyra yezoensis ); harvest; sectional hob type; mowing simulation; design and experiment (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2023
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/2077-0472/13/2/361/pdf (application/pdf)
https://www.mdpi.com/2077-0472/13/2/361/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jagris:v:13:y:2023:i:2:p:361-:d:1054959

Access Statistics for this article

Agriculture is currently edited by Ms. Leda Xuan

More articles in Agriculture from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().