## Machines for Moving the Earth: Fundamentals of the Theory of Soil Loosening, Modeling of Working Processes and Forecasting Machine ParametersUnited States Department of Agriculture, and the National Science Foundation, Washington, D.C., 1985 - Earthmoving machinery - 555 pages |

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### Contents

INTRODUCTION | 1 |

PHYSICAL PROPERTIES OF FROZEN SOILS | 51 |

INVESTIGATIONS OF RESISTANCE | 87 |

Copyright | |

33 other sections not shown

### Common terms and phrases

analysis angle of friction approximate assessment blade bucket bulldozer calculations characteristics characterized chip clay coefficient compression conducted considered constraints correlation corresponding criteria curve cutting angle cutting force dense core depth of cutting determined diagram dimensional drag prism effect energy capacity equation excavating machines experimental experiments forecasting formula friction frozen soils function given graphs horizontal impact increase investigations joules limiting linear load loam loosening machine parameters material maximum medium meters method Mohr's circles moisture content moldboard nomograms normal stress obtained operation particles plane plastic deformation plasticity index probabilistic productivity quantity ratio relation resistance to cutting sand sandy loam scraper shear strength shear stress shown in Fig similarity sliding body soil cutting solution specimens statistical stratum strength structural cohesion Table technical temperature tensile stresses theory tion tool tractive effort unfrozen values variation volume wedge width zone