Piotr Antoni Dudziński
Journal of Terramechanics, Volume 86, 2019, Pages 31-37, ISSN 0022-4898
https://doi.org/10.1016/j.jterra.2019.08.005.(http://www.sciencedirect.com/science/article/pii/S0022489819301089)
Abstract: The interaction between off-road machines and soil is usually a dynamic process of soil shearing. However, in practice, in order to interpret these processes, the empirical modified static Coulomb criterion, which does not take into account the soil strengthening, is commonly used. At Wrocław University of Technology a proposal for a method for predicting dynamic shear strength in soils was developed. This method takes into account primarily the soil shear velocity, the scale effect of the test device and its kinematics, which include the parameters of the process under investigation in terramechanics. The method will be presented in two parts of the following publication. The first part presents the results of the tests on soil shear strength carried out by the author of the article by means of soil ring shear test device. These results are discussed against the background of the results of soil research performed all around the world. On the basis of the tests conducted by the author, a new dynamic criterion of soil shear strength was formulated and the requirements for the innovative method for predicting dynamic shear strength in soils were established. This experimental method will be presented in the second part of the article.
Keywords: Terramechanics; Dynamic shear strength; New criterion