By J.Y. Wong
This booklet should be of serious curiosity to any specialist engineer or automobile engineering pupil engaged on off-road automobiles. Reflecting the rise in off-road car construction and development-recreational, agricultural, building, military-this publication equips readers with all the worthy wisdom to effectively layout and version off-road motor vehicle platforms, and offers a finished advent to terramechanics, the mechanics of vehicle/terrain interplay. the one booklet to hide the foundations of off-road motor vehicle and terrain engineering, a speedily constructing zone that incorporates SUVs, tractors and agricultural automobiles, army automobiles, and development equipmentCovers the most recent advancements within the box, together with the newest computer-aided tools hired within the improvement of latest new release of high-mobility off-road cars in Europe, North the United States and Asia.Ideal for pro reference and direction reference by means of scholars, with new precise labored layout examples, case stories, and accompanying difficulties and suggestions.
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Extra resources for Terramechanics and Off-Road Vehicle Engineering, Second Edition: Terrain Behavior, Vehicle Design and Performance
Sample text
With the properties of the material known or given, the stresses and strains of the elements can then be determined. The finite element method offers the flexibility of assigning different mechanical properties to different elements, thus providing a means to examine engineering problems involving non-homogeneous or anisotropic media. Early work on applying the finite element method to the study of wheel (tyre)–soil interaction assumes that the soil is either a linear or non-linear elastic continuum.
In this case, the weight of the soil mass assists in the expansion and this type of failure is called the active failure. On the other hand, if the prism is compressed, the normal stress on both vertical sides increases, while that at the bottom remains unchanged. In this case, lateral compression of the soil is resisted by its own weight and the resulting failure is called the passive failure. The two states of stress prior to plastic flow caused by expansion and compression of the soil are generally referred to as the Rankine active and passive state, respectively.
12), with cohesion of the terrain defined by the intercept of the straight line with the shear stress axis and the angle of internal shearing resistance being represented by the slope of the straight line. The Mohr-Coulomb failure criterion simply implies that if a Mohr circle representing the state of stress at a point in the terrain touches the enveloping line, failure will take place at that point. Y. 12) may be measured by a variety of devices. The triaxial apparatus and the translational shear box are commonly used in soil mechanics studies related to civil engineering.
