By Guowei MA, Yingxin ZHOU
This e-book comprises the 7 keynote papers written via the specialists, foreign well known researchers and experts and seventy three technical papers which mirror the state-of-the-practice at the research of Discontinuous Deformation: New improvement and functions. those papers have been chosen after a rigorous overview strategy. It represents the newest advances in numerical and analytical tools regarding rock mechanics and engineering. Following the culture of the sequence, the most schemes of the papers are at the key block idea and its engineering purposes, the discontinuous deformation research (DDA) approach and the numerical manifold process (NMM). although, different suitable subject matters, for instance, the distinct/discrete point approach, the meshless procedure, the finite point strategy in rock mechanics and engineering purposes also are incorporated. For rock lots the place the discontinuities dominate their behaviour in a rock engineering process reminiscent of rock slopes and underground rock caverns, the research of discontinuous deformation is of serious value within the balance research and engineering layout. it really is was hoping that this ebook serves as an invaluable reference for either researchers and engineers at the new advancements and purposes of a few of the on hand modeling recommendations and instruments during this more and more vital box of rock mechanics and engineering. subject matters lined: * Key Block idea and Engineering functions * Discontinuous Deformation research (DDA) approach * Numerical Manifold procedure (NMM) * Distinct/Discrete aspect process (DEM) * program of UDEC, 3DEC and PFC codes * Meshless technique and Rock Engineering purposes * touch Algorithms * Wave Propagation via Rock Joint and Jointed Rock Mass * Deformation research of Heterogeneous fabrics * different complex Analytical and Numerical equipment in Rock Engineering * Experimental thoughts and size of Discontinuous Deformation * Case reviews and different suitable subject matters
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Additional resources for Analysis of Discontinuous Deformation New Developments and Applications
9. T. and Xue, W. (2006). A Linearly conforming radial point interpolation method for solid mechanics problems, International Journal of Computational Methods, 3: 401-428. 10. Zhang, G. , Liu, G. R. and Li, Y (2008). An efficient adaptive analysis procedure for certified solutions with exact bounds of strain energy for elasticity problems. Finite Elements in Analysis and Design, 44: 831-841. 11. Zhang, G. , Liu, G. , Nguyen, T. , Song, C. , Zhong, Z. H. and Li, G. Y. (2007a). The upper bound property for solid mechanics of the linearly conforming radial point interpolation method (LC-RPIM).
5. Conclusions Concerning the rockfall experimental results performed by the former Mimistry of Construction in Takamatsu of Japan (1989), a reproducing experiment was carried out by using DDAball. The reproducibility experiment was performed by two steps. At the first, the deviation effects of the dependency on the incident velocity of the normal direction was investigated by using the model expressing the even inclination region with a long straight line. The results were shown as follows: (1) There is a dependency of the incident velocity of the normal direction on the velocity ratio.
51 Analysis of Discontinuous Deformation: New Developments and Applications 3. 1. Modeling of multiple discrete blocks The problems with multiple discrete bodies which are described well with the DDA can also be modeled with the NMM. A typical domino run problem is numerically investigated here. The numerical model consists totally 41 rectangular blocks with the size of 20 mm×150 mm and the spacing of 30 mm on a horizontal surface. 3. 3. An initial pulse force is applied to the first block to make it topple to the second block, which induce a toppling process shown in Fig.