Shearing properties of sand under a repeated loading representing the ground pressure distribution of a tracked vehicle

1977 ◽  
Vol 14 (4) ◽  
pp. 237-248
Author(s):  
K. Kogure ◽  
T. Kudo
Keyword(s):  
Pressure Distribution ◽  
Repeated Loading ◽  
Tracked Vehicle ◽  
Ground Pressure

The foot-ground pressure distribution following triple arthrodesis

1981 ◽  
Vol 98 (4) ◽  
pp. 263-269 ◽  
Author(s):  
Haim Stein ◽  
Ariel Simkin ◽  
Keenan Joseph
Keyword(s):  
Pressure Distribution ◽  
Triple Arthrodesis ◽  
Ground Pressure

scholarly journals An Analytical Model for Predicting Ground Pressure under a Rigid-Flexible Tracked Vehicle on Soft Ground

2020 ◽  
Vol 2020 ◽  
pp. 1-7 ◽  
Author(s):  
Weiwei Liu ◽  
Kai Cheng
Keyword(s):  
Analytical Model ◽  
Soil Compaction ◽  
Maximum Error ◽  
Soil Characteristics ◽  
Design Parameters ◽  
Soft Ground ◽  
Tracked Vehicle ◽  
Significant Parameter ◽  
Ground Pressure ◽  
Flexible Track

Ground pressure is a significant parameter for the mobility, tractive performance, and soil compaction. In this study, an analytical model for predicting ground pressure distribution under a rigid-flexible tracked vehicle on soft ground was developed. The model considered the primary design parameters of the tracked vehicle, soil characteristics, and soil shear. The ground pressure was not uniform, and its maximum values under the roadwheels were 90.20, 103.57, and 150.14 kPa. The ground pressure was inversely proportional to the ratio of the lengths of the flexible track and rigid grouser. An experiment was conducted to verify the analytical model. The maximum error between the measured and simulated results was smaller than 8%, thereby verifying the analytical model.

Repeated Loading, Residual Stresses, Shakedown, and Tribology

1999 ◽  
Vol 14 (4) ◽  
pp. 1548-1559 ◽  
Author(s):  
J. A. Williams ◽  
I. N. Dyson ◽  
A. Kapoor
Keyword(s):  
Plastic Deformation ◽  
Residual Stresses ◽  
Pressure Distribution ◽  
Elastic Properties ◽  
Operating Conditions ◽  
Repeated Loading ◽  
Surface Layers ◽  
Near Surface ◽  
Coated Surfaces ◽  
Simple Stress

Protective residual stresses may be developed in the near surface layers of tribological contacts which enable loads sufficiently large to cause initial plastic deformation to be accommodated purely elastically in the longer term. This is the process of shakedown and, although the underlying principles can be demonstrated by reference to relatively simple stress systems, the situation is complex under a moving Hertzian pressure distribution. Bounding theorems can be used to generate appropriate load or shakedown limits not only for uniform half-spaces but also those with plastic and/or elastic properties which vary with depth. In this way, shakedown maps, which delineate the boundaries between potentially safe and unsafe operating conditions, can be generated for both hardened and coated surfaces.

The Research on Grounding Pressure Distribution of Tracked Travelling Mechanism

2014 ◽  
Vol 526 ◽  
pp. 115-120
Author(s):  
Xi Yang Liu ◽  
Zhi Yong Jiao ◽  
Mei Yu Zhang
Keyword(s):  
Mathematical Model ◽  
Pressure Distribution ◽  
Center Of Gravity ◽  
Core Region ◽  
Tracked Vehicles ◽  
Overall Design ◽  
Ground Pressure ◽  
Ground Conditions ◽  
The Mathematical Model

The grounding pressure of tracked vehicles is closely related to the overall structure of the vehicles and the ground conditions, and its distribution is more complex and changes in the different center of gravity. So in this paper, under certain assumptions, we derive the mathematical model of the grounding pressure distribution through analysis and research, which can predict the ground pressure distribution of tracked vehicles at any moment. By analyzing the tracked grounding pressure distribution, we put forward the concept of core region of track connecting with the ground, and some meaningful conclusions and formulas for the overall design of tracked vehicles.

Discussions of Tire Ground Pressure Distribution Model

2011 ◽  
Vol 243-249 ◽  
pp. 4356-4359 ◽  
Author(s):  
Yan Ru Li
Keyword(s):  
Pressure Distribution ◽  
Normal Stress ◽  
Experimental Studies ◽  
Distribution Model ◽  
Mathematics Model ◽  
Tire Pressure ◽  
Distribution Models ◽  
Ground Pressure ◽  
The Law

Though there have been some experimental studies to discuss laws of grounding shape and grounding pressure, the acknowledged mathematics model has not established. In order to discuss the law of tire ground pressure distribution, pressure distribution models of round rectangles grounding shape and ellipse grounding shape are advanced differently. Parameters setting method and 3-D graph of different ground pressure distribution are presented, and expressions of ground area, mean ground pressure, most ground pressure and the normal stress on the ground are deduced. Results show that the grounding shape of tire is close to ellipse or rectangle as load varying, and the distribution of grounding pressure express convex or concave under different tire pressure and loading.

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