Issue 47

S.C. Li et alii, Frattura ed Integrità Strutturale, 47 (2019) 1-16; DOI: 10.3221/IGF-ESIS.47.01

Start calculation.

Input model parameters.

Impose load and balance FLAC program calculation.

Calculate the strain energy density of each element.

No

, Yes/No

Yes

Calculate the element damage degree n and reduce modulus accordingly.

No

, Yes/No

Yes

Mark element failure.

No

, Yes/No

Yes

Give residual modulus to the element.

No

Does stepwise loading end?

Yes

End calculation.

Figure 4 : Numerical simulation flow of rock failure based on strain energy density theory

N UMERICAL SIMULATION OF ROCK FRACTURE

Brazilian Splitting Numerical Simulation his case takes the Brazilian splitting with lateral concentrated load in document [17] as an example. Fig. 5 shows the calculation model. The disk diameter is 50mm and it is divided into 7860 elements. The model material adopts the marble in document [17] with the elastic modulus 66.8 E GPa = , poisson's ratio 0.33 v = , density 3 2620 / Kg m  = T

8