Results 31 to 40 of about 200 (171)
Characterizing Soil Stiffness Using Thermal Remote Sensing and Machine Learning
Remote Sensing, 2021 Soil strength characterization is essential for any problem that deals with geomechanics, including terramechanics/terrain mobility. Presently, the primary method of collecting soil strength parameters through in situ measurements but sending a team of ...
Jordan Ewing +3 more
doaj +1 more source
Evaluating the Effect of Soil Deformation Rate on the Estimation of the Energy Consumption in Soil-Tire Interactions Using the Pressure-Sinkage Equation [PDF]
Journal of Agricultural MachineryUnderstanding soil deformation dynamics is critical in various fields, such as off-road vehicle mobility, agriculture, and soil mechanics. In particular, evaluating soil-tire interactions is essential for optimizing energy consumption and minimizing the ...
H. Asadollahi +3 more
doaj +1 more source
Particle‐Scale Mechanics of a Regolith‐Type Soil
International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.ABSTRACT The existing studies have reported that the surface of Mars shows the presence of materials having igneous origin, including basalt and regolith‐type coarse soils. These findings are affected by significant uncertainties and, therefore, the selection of simulants for various exploration applications, including surface mobility of rovers ...
Vincenzo Nardelli +2 more
wiley +1 more source
Journal of Field Robotics, EarlyView.ABSTRACT The design of a hexapod is complex and requires integration between kinematic models, control systems, and sensing. Existing literature has reviewed these sub‐systems in isolation. Since 2021, there has been no review of the field despite significant advancements in soft soil, lunar traversal, and artificial intelligence.
Akhil Rampersad, Bashan Naidoo
wiley +1 more source
Tire‐Pavement Contact Stress Characteristics and Critical Slip Ratio at Multiple Working Conditions
Advances in Materials Science and Engineering, Volume 2019, Issue 1, 2019., 2019 The contact stress distribution of tire‐pavement is generally assumed to be uniformly distributed in circles or rectangles in the pavement design. This simplification can solve some common engineering problems, but it neglects two factors including magnitude and direction of the contact stress.
Minrui Guo +2 more
wiley +1 more source
AerospaceThe assessment of trafficability for planetary rovers in relation to non-geometric hazards is a crucial issue in deep space exploration. This study relies on terramechanics theory and incorporates actual data from Mars soil and rover parameters to ...
Yan Shen +5 more
doaj +1 more source
International Journal for Numerical and Analytical Methods in Geomechanics, Volume 50, Issue 16, Page 5701-5711, November 2026.ABSTRACT The EAC‐1A lunar mare simulant, a silty sand, was selected by the European Astronaut Center (EAC) for use in the LUNA analogue facility's lunar simulation testbed. Its stress‐ and strain‐dependent shear modulus and damping ratio were determined via resonant column testing on specimens prepared either from ambient moisture material or oven ...
Christos Vrettos
wiley +1 more source
Motion Predicting of Autonomous Tracked Vehicles with Online Slip Model Identification
Mathematical Problems in Engineering, Volume 2016, Issue 1, 2016., 2016 Precise understanding of the mobility is essential for high performance autonomous tracked vehicles in challenging circumstances, though the complex track/terrain interaction is difficult to model. A slip model based on the instantaneous centers of rotation (ICRs) of treads is presented and identified to predict the motion of the vehicle in a short ...
Hao Lu +3 more
wiley +1 more source
Enhancing the Passing Ability of Unmanned Vehicles Using a Variable-Wheelbase Driving System
IEEE Access, 2019 A six-wheel driving system with a variable wheelbase is proposed to improve the passing ability of unmanned vehicles. As the first step, the effect of the wheelbase variation on the axle load distribution is analyzed.
Wenhao Wang +3 more
doaj +1 more source
IEEE Access, 2020 A multistage adaptive lateral deformation tracked robot was designed to improve the passing ability of field robots. The designed robot can change its width under the combined action of space barrier constraint and internal stored elastic potential ...
Yidong Bai, Lingyu Sun, Minglu Zhang
doaj +1 more source