It is a famous q uote that “Every structur e is supported on soils or rock, t hose that aren’t, either fly, float, or fall over”. Soils are natural deposits on which humans have no control. Soils at no two sites are likely to be the same. Even, at a particular point at a sit e, different types of soils exist at different depths. Several theories and formulas have been developed since the birth ...

Introduction: As a carrier of different sensors, moles can penetrate into the regolith automatically and keep investigating the subsurface environment continuously. In this section, features of several moles with different applications are introduced to explain why we choose a hammer-driven mole to study. Mole driven by a hammer: In this section, the penetrating principle of a hammer-driven mol...

Norman Wagner(1), Alexander Scheuermann(2,3), Moritz Schwing(2), Frank Bonitz(1), Klaus Kupfer(1) (1) Institute of Material Research and Testing at the Bauhaus-University Weimar Coudraystr. 4, 99423 Weimar, Germany, Email: [email protected] (2) The Golder Geomechanics Centre, University of Queensland, Brisbane, Australia (3) Institute for Soil Mechanics and Rock Mechanics, University of Kar...

Soils are mixtures of three phases, a porous soil skeleton of solid mineral particles and two fluids water and air filling the pores completely. The soil skeleton and the fluids can move depending on the constitutive behaviour of all constituents and interactions between them. In general a coupled deformation/seepage problem exists which can be uncoupled for certain circumstances. Mechanical mo...

This paper investigates kinetic behavior of a planetary rover with attention to tire-soil traction mechanics and articulated body dynamics, and thereby study the control when the rover travels over natural rough terrain. Experiments are carried out with a rover test bed to observe the physical phenomena of soils and to model the traction mechanics, using the tire slip ratio as a state variable....

investigation of projectiles penetration phenomenon has been carried out in non-cohesive soil (sand) targets under dry, saturated and compacted conditions. analytical studies have been performed on the linear and non-linear soil models to obtain penetration depth formulae for ogival nose projectile and the results are verified by experimental studies. in present work, three ogival nose projecti...