Papers by Author: Shu Juan Cao

Abstract: Removable steel refuge chamber is a very important device for lifesaving in coal mine disasters, such as fire, gas explosion, roof fall, and so on. So the chamber body should have good stiffness, strength, and tightness under disaster conditions. The stiffener structure in refuge chamber body has been investigated with FEM, and a kind of design was suggested.

Abstract: The scooping process of wheel loader is divided into three phases, called insertion, scoop-up and pull-out phase respectively. The key phase in scooping process is scoop-up phase, so the test investigation is focused on it, and the concept of resistance isoline was verified.

Abstract: The influence of the wear of the rotor bar on its impact effect was investigated with FEM simulation. The effectiveness of FEM simulation on the research of impact force was verified through the comparison of experiment and simulation data. Simulation results showed that the wear of rotor bar has not so large influence on impact force. In its initial stage, the bar is worn easily, and the wear becomes slow with the wear increasing.