Abstract:

The actual process of interaction between the tooth of roller cone bit and rock is complex. It is changing angle, oblique shocks rolling and blow it down into various compound movement. In which, the rock breaking system of single bit toothrow composite locomotion may simulate the motion, force and rock breaking state of tooth, and obtain the hole in all kinks of the bit structure, drill stress and rational velocity can be obtained, as to the important basis for appraising the bit preferences and researching the professional bit can be provided. It is important to appraise the rock breaking efficiency of bit and set up the simulation model that studies the theory, establish the bit toothlow compound movement rockbreaking system geometry relational models and dynamic simulation models. In the paper, with the ABAQUS finite element analysis sofeware, the analysis model is established, the rock by linear DruckerPrager model simulated, and the rock breaking system of single bit toothrow composite locomotion analyzed

Key words: single toothenclose, rock, dynamics characteristic, simulation, ABAQUS software