Results 1 to 10 of about 167,505,088 (238)

MECHANICAL PROPERTIES FOR SOME VARIETIES OF OLIVE FRUITS [PDF]

Journal of Soil Sciences and Agricultural Engineering, 2007
A study was carried out to determine some mechanical properties for fruits and pits of different olive varieties. The studied varieties included Coratina, Kronaki and Arab queen as oil producing varieties and Picual, Manzanillo and Watiken as duel ...
A. Tharwat, S. El-Khawaga, M.M. EL-Kholy, A.M. Matouk   +3 more
doaj   +1 more source

Parameter Calibration for Simulation of Gentiana Seedling Substrate Based on Discrete Element Method

BioResources, 2023
The physical and mechanical parameters of the rotten rice straw (RRS), rice husk biochar (RHB), and the mixture of the two materials (the substrate) were calibrated by Plackett-Burman and Box-Behnken experiments to obtain the parameters for simulation of
Hongguang Cui, Tian Li, Tianyou Chen, Liyan Wu, Hongbo Li, Cuihong Liu, Mingjin Xin, Yuqiu Song   +7 more
doaj   +2 more sources

Virtual parameter calibration of pod pepper seeds based on discrete element simulation

Heliyon
In order to achieve numerical optimization of the pod pepper seed sowing device, the contact parameters of pod pepper seeds were calibrated, with the angle of repose used as the response value.
Xingye Chen, Xinzhong Wang, Jing Bai, Weiquan Fang, Tianyu Hong, Nan Zang, Gaoliang Wang   +6 more
doaj   +1 more source

Discrete Element Model of Oil Peony Seeds and the Calibration of Its Parameters

Agriculture
Oil peony is an important oil crop that is primarily sown by using artificial methods at present. Its seeder encounters the problems of low efficiency of seeding that significantly limits the highly efficient mechanized production of high-quality peony ...
Hao Zhou, Kangtai Li, Zhiyu Qin, Shengsheng Wang, Xuezhen Wang, Fengyun Sun   +5 more
doaj   +1 more source

Calibration and test of contact parameters for alfalfa stalk at primary florescence based on discrete element method.

PLoS ONE
In view of the lack of accurate models for discrete element simulation in the current research and development process of forage harvesting and crushing machinery, the contact parameters were calibrated based on Hertz-Mindlin (no slip) contact model by ...
Tao Chen, Shujuan Yi, Yifei Li, Guixiang Tao, Xin Mao   +4 more
doaj   +1 more source

Determination of the Dynamic Angle of Repose of Lunar Regolith Simulants

Geosciences
The determination of the dynamic angle of repose (DAR) of lunar regolith simulants is essential for modeling material behavior during in situ resource utilization (ISRU) processes and lunar surface operations.
Mateusz Pawłowski, Damian Pietrusiak, Jakub Wróbel, Janusz Kozubal   +3 more
doaj   +1 more source

Calibration of Simulation Parameters for Fresh Tea Leaves Based on the Discrete Element Method

Agriculture
To address the problem of a lack of accurate parameters in the discrete element simulation study of the machine-picked fresh tea leaf mechanized-sorting process, this study used machine-picked fresh tea leaves as the research object, established discrete
Dongdong Li, Rongyang Wang, Yingpeng Zhu, Jianneng Chen, Guofeng Zhang, Chuanyu Wu   +5 more
doaj   +1 more source

Calibration and Experimental Validation of Discrete Element Parameters for Long-Grain Rice with Different Moisture Contents Based on Repose Angle

Agriculture
The accurate determination of discrete element parameters is crucial for ensuring reliable results in simulating the critical post-harvest stages of rice grain (processing, transportation, and storage) with different moisture contents.
Zhengfa Chen, Gang Che, Lin Wan, Hongchao Wang, Kun Zhang   +4 more
doaj   +1 more source

Parameter Calibration Method for Discrete Element Simulation of Soil–Wheat Crop Residues in Saline–Alkali Coastal Land

Agriculture
After wheat harvesting in coastal saline–alkali land, when the straw is returned to the field and the soil is rotary tilled, the lack of reliable discrete element simulation parameter models restricts the optimization and improvement of special tillage ...
Jie Liu, Tong Lu, Shuai Zheng, Yu Tian, Miaomiao Han, Muhao Tai, Xiaoning He, Hongxiu Li, Dongwei Wang, Zhuang Zhao   +9 more
doaj   +1 more source

Effect of clay content on the shear strength of clay–sand mixture

International Journal of Geo-Engineering, 2018
This paper investigates the effect of clay content on the shear strength of clay–sand mixtures. Bentonite and Jumunjin sand were mixed to prepare clay–sand mixtures with varying clay contents of 5, 10, 15, 20, 25 and 30%.
Donghwi Kim, Boo Hyun Nam, Heejung Youn
doaj   +1 more source