Search for dissertations about: "Changming Wu"

Found 2 swedish dissertations containing the words Changming Wu.

2. 1. Influence of springy impact interface and curved drill rods on energy transfer in percussive rock drilling

   Author : Changming Wu; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mining and Rock Engineering; Gruv- och berganläggningsteknik;

   Abstract : The influence of springy impact interface and of curved drill rods on energy transfer in percussive rock drilling was studied. Analytical models for pneumatic and hydraulic rock drills were introduced, in which the springy piston-rod impact interface was taken into account. READ MORE

4. 2. Modelling of percussive system of rock drills

   Author : Changming Wu; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mining and Rock Engineering; Gruv- och Berganläggningsteknik;

   Abstract : .... READ MORE