THE EFFECTS OF TOOL WIDTH AND RAKE ANGLE ON DRAUGHT AND SOIL FAILURE PATTERNS OF MODEL CHISELS FURROWERS

2019 ◽  
Author(s):  
Eli Mamman
Keyword(s):  
Rake Angle ◽  
Failure Patterns ◽  
Soil Failure

Effect of tine rake angle and aspect ratio on soil failure patterns in dry loam soil

1996 ◽  
Vol 33 (5) ◽  
pp. 233-252 ◽  
Author(s):  
J.T. Makanga ◽  
V.M. Salokhe ◽  
D. Gee-Clough
Keyword(s):  
Aspect Ratio ◽  
Rake Angle ◽  
Failure Patterns ◽  
Soil Failure ◽  
Loam Soil

scholarly journals Chaos emerging in soil failure patterns observed during tillage: Normalized deterministic nonlinear prediction (NDNP) and its application

2017 ◽  
Vol 27 (3) ◽  
pp. 033115 ◽  
Author(s):  
Kenshi Sakai ◽  
Shrinivasa K. Upadhyaya ◽  
Pedro Andrade-Sanchez ◽  
Nina V. Sviridova
Keyword(s):  
Nonlinear Prediction ◽  
Failure Patterns ◽  
Soil Failure

scholarly journals Study on the Interaction between Soil and the Five-Claw Combination of a Mole Using the Discrete Element Method

2018 ◽  
Vol 2018 ◽  
pp. 1-11 ◽  
Author(s):  
Yuwan Yang ◽  
Mo Li ◽  
Jin Tong ◽  
Yunhai Ma
Keyword(s):  
Discrete Element Method ◽  
Discrete Element ◽  
Rake Angle ◽  
Soil Resistance ◽  
Distance Ratio ◽  
Soil Failure ◽  
Soil Cutting ◽  
Soil Bin ◽  
Rupture Distance ◽  
Element Method

A mole is a born digger spending its entire existence digging tunnels. The five claws of a mole’s hand are combinative to cut soil powerfully and efficiently. However, little was known in detail about the interaction between the soil and the five-claw combination. In this study, we simulated the soil cutting process of the five-claw combination using the discrete element method (DEM) as an attempt for the potential design of soil-engaging tools to reduce soil resistance. The five-claw combination moved horizontally in the soil bin. Soil forces (draught and vertical forces) and soil failure (soil rupture distance ratio) were measured at different rake angles and speeds. Results showed that the draught and vertical forces varied nonlinearly as the rake angle increased from 10 to 90°, and both changed linearly with the speed increasing from 1 to 5 m/s. The curve of the soil rupture distance ratio with rake angles could be better described using a quadric function, but the speed had little effect on the soil rupture distance ratio. Notably, the soil rupture distance ratio of the five-claw combination in simulation was on average 19.6% lower than the predicted ratio of simple blades at different rake angles indicating that the five-claw combination could make less soil failure and thereby produce lower soil resistance. Given the draught and vertical forces, the performance of the five-claw combination was optimized at the rake angle of 30°.

Soil failure patterns and draft as influenced by consistency limits: An evaluation of the remolded soil cutting test

2014 ◽  
Vol 137 ◽  
pp. 58-66 ◽  
Author(s):  
A.A. Tagar ◽  
Changying Ji ◽  
Qishuo Ding ◽  
Jan Adamowski ◽  
F.A. Chandio ◽  
...  
Keyword(s):  
Failure Patterns ◽  
Cutting Test ◽  
Soil Failure ◽  
Soil Cutting

Finite element simulation of soil failure patterns under soil bin and field testing conditions

2015 ◽  
Vol 145 ◽  
pp. 157-170 ◽  
Author(s):  
A.A. Tagar ◽  
Ji Changying ◽  
Jan Adamowski ◽  
Julien Malard ◽  
Chen Shi Qi ◽  
...  
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Field Testing ◽  
Testing Conditions ◽  
Failure Patterns ◽  
Soil Failure ◽  
Element Simulation ◽  
Soil Bin

A method for dynamic measurement of soil failure patterns caused by tillage tools

1997 ◽  
Vol 41 (1-2) ◽  
pp. 119-125 ◽  
Author(s):  
C.Divaker Durairaj ◽  
M. Balasubramanian
Keyword(s):  
Dynamic Measurement ◽  
Failure Patterns ◽  
Soil Failure

Effect of Pile and Load Inclination on the Pile Resistance In both Compression and Tension

2014 ◽  
Vol 2 (1) ◽  
pp. 11-29
Author(s):  
Ahmad Jabber Hussain ◽  
Alaa Dawood Salman ◽  
. Nazar Hassan Mohammad
Keyword(s):  
Bearing Capacity ◽  
Inclination Angle ◽  
Theoretical Study ◽  
Pile Installation ◽  
Soil Failure ◽  
Inclined Pile ◽  
Uplift Resistance ◽  
Lift Forces ◽  
Batter Piles ◽  
Pile Resistance

      According to this theoretical study which was about loading of piles under different condition of loading (compression and up-lift forces ) and for deferent pile installation (vertical and inclined pile ) by which it called (positive batter pile ) when the inclination of the load and pile is in the same direction and called (negative batter pile) when the inclination of load is opposite to the pile inclination, and from studying these cases the results of analysis can be summarize in the flowing points: 1-Variation of load inclination on piles effects on the bearing capacity and uplift resistance. It was found that bearing capacity of the piles increase with increasing of load inclination up to the inclination angle (37.5ͦ) which represents the maximum bearing capacity and then the bearing capacity decrease with increasing of load inclination. 2- Variation of batter pile affects the bearing capacity of the pile and up-lift resistance. by which equivalent angle will be used as result between the load and piles inclination and this angle will be used in calculation of piles resistance . 3- It was noticed the shape of soil failure is highly affected by the inclination of pile. The shape of failure for the soil which is in contact with pile and this include (vertical and batter piles) is highly affected by the angle of inclination.

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