supported by the National Natural Science Foundation of China (No. 50475056)
The transient response to longitudinal impact of flexible rods with Hertz contact is closely related to the extent of deformations with different impact parameters. By means of LS-DYNA, for different radius and differ...
supported by the National Natural Science Foundation of China (No. 50475056)
The process of DTH(down-the-hole) hammer drilling has been characterized as a very complex phenomenon due to its high nonlinearity,large deformation and damage behaviors.Taking brittle materials(concrete,granite an...