Results 11 to 20 of about 167,505,088 (238)

Fundamental study on the effect of grain size distribution on angle of repose [PDF]

E3S Web of Conferences
In this study, the authors developed a new sidewall velocity-controlled cylindrical angle of repose measurement apparatus that can capture images of a sand heap continuously using two orthogonal cameras in order to reduce the cost of photography.
Kajiyama Shintaro, Nakata Yukio, Nakase Hitoshi   +2 more
doaj   +4 more sources

Experimental Study of the Angle of Repose of Coral Sands

Journal of Marine Science and Engineering
The angle of repose is a fundamental parameter for assessing the stability of coral reefs. However, predictive models for this angle are currently lacking.
Zhen Yao, Jie Chen, Changbo Jiang, Zhiyuan Wu, Bin Deng, Yuannan Long, Hongtao Zou, Jinwei Zhang, Runze Bai   +8 more
doaj   +3 more sources

Antlion sand interaction: A study of repose angle

Biogeotechnics
The antlions dig a conical simple pit in sand to catch ants. The funnel shape of the trap is deliberate with a critical angle of repose and is steep and shallow enough to trigger avalanches and cause struggling prey to fall into the funnel.
Ali Maroof
doaj   +2 more sources

Simultaneous measurement of rice grain friction coefficient and angle of repose using rotating cylinders [PDF]

Journal of Applied Botany and Food Quality, 2022
Several methods have been developed to measure the friction coefficient of grains and seeds as well as their angle of repose, independently. However, it seems that one single method capable of simultaneous measurement of these two important parameters ...
Jafar Massah, Javad Khazaei
doaj   +2 more sources

Angle of repose revisited: When is a heap a cone?

EPJ Web of Conferences, 2017
The angle of repose is a frequently reported value in bulk solids characterisation and its popularity is based on the simple measurement setup. It can be useful to estimate the flowability of a bulk material or to estimate the inner friction coeffcient ...
Rackl Michael, Grötsch Florian E., Günthner Willibald A.   +2 more
doaj   +3 more sources

An expression for the angle of repose of dry cohesive granular materials on Earth and in planetary environments [PDF]

Proceedings of the National Academy of Sciences of the United States of America, 2021
Eric J. Parteli, Filip Elekes
exaly   +2 more sources

Calibration of discrete element parameters for cohesive soils at different moisture contents. [PDF]

PLoS ONE
To obtain discrete element method simulation parameters for cohesive soil during the scrapping process of loaders, this paper calibrates parameters of cohesive soil with different moisture contents based on the Hertz-Mindlin with Johnson-Kendall-Roberts (
Shixi Wei, Bing Li, Jinxia Yang, Dengsheng Cai, Wubin Xu, Zhaoyang Liu   +5 more
doaj   +2 more sources

Angle of repose of granulated ice: effect of wood ash

Journal of Glaciology
New experiments have revealed that the addition of a small amount of wood ash doubles the angle of repose of granulated ice at −10°C, but has little effect at −30°C. It is hypothesized that this behavior may be explained in terms of the freezing of water
William M. Harris, Andrii Murdza, Erland M. Schulson   +2 more
doaj   +2 more sources

Measurement and Calibration of DEM Parameters of Soybean Seed Particles

Agriculture, 2022
In discrete element method (DEM) simulations, accurate simulation parameters are very important. For ellipsoidal soybean seed particles, the rolling friction coefficient between seed particles (RFCP-P) and the rolling friction coefficients between seed ...
Dongxu Yan, Jianqun Yu, Yang Wang, Kai Sun, Long Zhou, Ye Tian, Na Zhang   +6 more
doaj   +1 more source

Calibration and Tests for the Discrete Element Simulation Parameters of Fallen Jujube Fruit

Agriculture, 2021
Discrete element method (DEM) simulation is an important method to analyze the interaction relationship between materials and equipment, and to develop machinery and/or equipment.
Gaokun Shi, Jingbin Li, Longpeng Ding, Zhiyuan Zhang, Huizhe Ding, Ning Li, Za Kan   +6 more
doaj   +1 more source