Enhanced Discrete Element Method (EDEM) and its Application to Stability Analysis of the Slope with Non-Through Joints

Article Preview

Abstract:

A new enhanced Discrete Element Method (EDEM) for modeling the system composed of cracked solids is developed by coupling the traditional Discontinuous Deformation Analysis method (DDA, a kind of implicit version of DEM) with Moving Least-Squares (MLS) meshfree approximation functions. Tracing crack growth inside fracturing blocks and other related capabilities are available in the postprocessing procedure at each iteration step. Some numerical examples are provided to verify this method, and it is prospective to solve stability problems of the slope with non-through joints and other fracture mechanics problems in a new way.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

1539-1542

Citation:

Online since:

September 2014

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2014 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

* - Corresponding Author

[1] T Belytschko, YY Lu, L Gu, M Tabbara. Element-free Galerkin methods for static and dynamic fracture. International Journal of Solids and Structures, 32(1995) 2547±70.

DOI: 10.1016/0020-7683(94)00282-2

Google Scholar

[2] Z. Goangseup, R. Timon,W. Wolfgang, Extended meshfree methods without branch enrichment for cohesive cracks. Computational Mechanics 40(2007)367~382.

DOI: 10.1007/s00466-006-0115-0

Google Scholar

[3] G. Ventura, J. Xu, T. Belytschko, A vector level set method and new discontinuity approximations for crack growth by efg. International Journal for Numerical Methods in Engineering 54(6) (2002) 923–944.

DOI: 10.1002/nme.471

Google Scholar

[4] G. H. SHI. Discontinuous Deformation Analysis—A New Numerical Model for the Statics and Dynamics of Block Systems, PhD Dissertation, Department of Civil Engineering University of California, Berkeley(1988).

Google Scholar

[5] C.T. Chang. Nonlinear dynamic discontinuous deformation analysis with finite element meshed block system [D]. Department of Civil Engineering University of California,Berkeley(1994).

Google Scholar

[6] I. Kaljevic, S. Saigal, An improved element free Galerkin formulation, International Journal for Numerical Methods in Engineering. 40 (1997) 2953-2974.

DOI: 10.1002/(sici)1097-0207(19970830)40:16<2953::aid-nme201>3.0.co;2-s

Google Scholar

[7] J. F. Yau, S.S. Wang, H. T. Corten, A mixed-mode crack analysis of isotropic solids using conservation laws of elasticity, Journal of Applied Mechanics, 47(1980) 335-341.

DOI: 10.1115/1.3153665

Google Scholar