A Dynamic Contact Method in the LECEL Test for Heterogeneous Brittle Materials

Abstract:

Based on dynamic contact force and FEM, the contact – separation process of collision was investigated. Compared with other methods, the dynamic contact method needn’t modify the general stiffness matrix, and increase any additional iterative computation. So there should be less computation and high efficiency. By building simulation model LECEI(the technique of loading edge cracks by edge impact), the propagation of branching cracks were simulated. Compared with existing research results, the method can be suitable to the impact model such as LECEI.

• Periodical: Advanced Materials Research (Volumes 557-559)
• Pages: 1423-1426
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.557-559.1423
• Online since: July 2012
• Authors: Yue Feng Yang, Chun An Tang, Zheng Zhao Liang, Zhi Yi Liao
• Keywords: Branching Crack, Collision, Crack Propagation, Dynamic Contact Problem, LECEI

References

[1] Kalthoff J. Modes of dynamic shear failure in solids. Int J Fracture. Vol. 101 (2000), pp.1-31.

[2] Kalthoff JF, Winkler S. Failure Mode Transition at High Rates of Shear Loading International Conference on Impact Loading and Dynamic Behavior of Materials1988. p.185-195s.

[3] Zhou M, Ravichandran G, Rosakis AJ. Dynamically propagating shear bands in impact-loaded prenotched plates—II. Numerical simulations. J Mech Phys Solids. Vol. 44 (1996), pp.1007-1032.

DOI: 10.1016/0022-5096(96)00004-x

[4] Armero F, Linder C. Numerical simulation of dynamic fracture using finite elements with embedded discontinuities. Int J Fracture. Vol. 160 (2009), pp.119-141.

DOI: 10.1007/s10704-009-9413-9

[5] Li S, Liu WK, Rosakis AJ, Belytschko T, Hao W. Mesh-free Galerkin simulations of dynamic shear band propagation and failure mode transition. Int J Solids Struct. Vol. 39 (2002), pp.1213-1240.

DOI: 10.1016/s0020-7683(01)00188-3

[6] Remmers JJC, de Borst R, Needleman A. The simulation of dynamic crack propagation using the cohesive segments method. J Mech Phys Solids. Vol. 56 (2008), pp.70-92.

DOI: 10.1016/j.jmps.2007.08.003

[7] Liu JB, Wang D. A contact force model on crack which can be touched in dynamic analysis-The newest developments in elastodynamics. Beijing: Beijing Science Press, 1995(in chinese).

[8] Chen ZH, Tang CA, Fu YF. Infinite element simulation of catastrophe induced by evolution of rock microfracturing damage. Chinese Journal of Geotechnical Engineering. Vol. 20 (1998), pp.9-15.(in chinese).

[9] Tang CA, Liu H, Lee PKK, Tsui Y, Tham LG. Numerical studies of the influence of microstructure on rock failure in uniaxial compression -- Part I: effect of heterogeneity. Int J Rock Mech Min. Vol. 37 (2000), pp.555-569.

DOI: 10.1016/s1365-1609(99)00121-5

[10] Tang CA. Numerical simulation of progressive rock failure and associated seismicity. Int J Rock Mech Min. Vol. 34 (1997), pp.249-261.

DOI: 10.1016/s0148-9062(96)00039-3

[11] Tang CA, Tham LG, Lee PKK, Tsui Y, Liu H. Numerical studies of the influence of microstructure on rock failure in uniaxial compression -- Part II: constraint, slenderness and size effect. Int J Rock Mech Min. Vol. 37 (2000), pp.571-583.

DOI: 10.1016/s1365-1609(99)00122-7

[12] Bertram A, Kalthoff JF. Crack propagation toughness of rock for the range from low tovery high crack speeds. Key Engineering Materials. Vol. 251-252 (2003), pp.423-430.

DOI: 10.4028/www.scientific.net/kem.251-252.423