Fig. 34: Force-displacement curves of standard PFM mode I tension test (l/h = 10) compared to XPFM simulations with different l/hratios
 
Two-Dimensional Investigation, Standard Phase-Field Simulation and XPFM simulation on two different meshes -> Figure shows the load-deflection curve
 
Simlulation of a 2D mode I fracture test. A quasi-static displacement increment is applied 500 load-steps at first with Δu = 1 · 10−5 mm for each load step and then Δu = 1 · 10-6 mm until failure. The initial crack is modelled explicitly.

Within the staggered solution process, no global
convergence criteria is evaluated. Here, nstag = 8 staggered solution steps are used. 

material parameters:
λ = 121.15 kN/mm^2, μ = 80.77 kN/mm^2, Gc = 2.7·10−3 kN/mm, l = 0.008 mm, kg = 0, kφ = 0.005, kreg = 2 · 10^−4 · l^2


for each file -> Columns
1: displacement
2: Force

file fig_33_data_1.csv: PFM, l/h=10
file fig_33_data_2.csv: XPFM, l/h=1
file fig_33_data_3.csv: XPFM, l/h=2
