Search
Now showing items 1-3 of 3
On Dynamic Fracture of Rock Under Bit Impact Loads
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A characterization of the dynamic interaction between an impacting tool and rock is presented. The analysis is based on the concept of rock fracture energy and on simple representations of the ...
A Dynamic Model for Rotary Rock Drilling
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A rock drilling model is developed as a set of ordinary differential equations describing discrete segments of the drilling rig, including the bit and the rock. The end segment consists of a ...
Dynamic Characteristics of a Hydrostatic Gas Bearing Driven by Oscillating Exhaust Pressure
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Vibration of a statically loaded, inherently compensated hydrostatic journal bearing due to oscillating exhaust pressure is investigated. Both angular and radial vibration modes are analyzed. The ...