13th International Conference on Fracture June 16–21, 2013, Beijing, China -6- value when the edge of the contact region scans over it again. For the point C, σx keeps negative during the loading and unloading process. Apparently, the amplitude of σx of the point B is much larger than the point A and the point C because of the scanning of the contact edge. (a) (b) Figure 8. Contact pressure on the tube surface for (a)time=1.0; (b)time=3.0 (a) (b) Figure 9. Contact shear stress on the tube surface for (a) time=2.9; (b) time=3.1.
RkJQdWJsaXNoZXIy MjM0NDE=