Page 264 - The Combined Finite-Discrete Element Method
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DISCRETE CRACK MODEL      247








                                 (a)            (b)           (c)







                                  (d)          (e)            (f)

           Figure 7.15 Finite element mesh (mesh A) employed and fracture sequence obtained for
           2γ = 3 N/m. The frames shown correspond to (b) t = 0ms, (c) t = 0.09 ms, (d) t = 0.15 ms,
           (e) t = 0.21 ms, (f) t = 0.25 ms; i.e. transient loads (b) σ = 0MPa, (c) σ = 1.8MPa, (d) σ =
           3.0MPa, (e) σ = 4.2 MPa, (f) σ = 5.0MPa.











                              (a)              (b)                (c)











                              (d)              (e)                (f)










                              (g)               (h)               (i)

           Figure 7.16 Finite element mesh (mesh B) employed and fracture sequence obtained for
           2γ = 3 N/m. The frames shown correspond to (b) t = 0ms, (c) t = 0.09 ms, (d) t = 0.15 ms,
           (e) t = 0.16 ms, (f) t = 0.17 ms, (g) t = 0.18 ms, (h) t = 0.19 ms, (i) t = 0.20 ms; i.e. transient
           loads (b) σ = 0MPa, (c) σ = 1.8MPa, (d) σ = 3.0MPa, (e) σ = 3.2 MPa, (f) σ = 3.4MPa,
           (g) σ = 3.6MPa, (h) σ = 3.8MPa, (i) σ = 4.0MPa.
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