pfmfrac

The phase field method uses a unified approach to model nucleation and propagation of cracks. Here, cracks are represented by means of a scalar field variable, which interpolates smoothly between the values 0 (blue) and 1 (red) indicating fractured and undamaged material, respectively (see Fig. 1).

Settings

Step 1

Here you can set the model parameters

λ and μ:

Lamé parameters: material properties
G_c:

Critical energy release rate: fracture resistance
k, A_D and n_D:

SN-diagram: fatigue parameters

An example of a SN-diagram.

Please set the model parameters

λ:

μ:

G_c:

A_D:

n_D:

Step 2

Here you can set the boundary conditions (0 for fixed boundary)

p_top:

tension load on top

Please set the boundary conditions

p_top:

Step 3

Here you can set the initial conditions

a₀:

initial crack length

Please set the initial conditions

a₀:

Step 4

Please provide here your email

email:

Step 5

Now, everything is ready and you can start the simulation

Start

Input parameters

Phase field model parameters
- λ:
  
  1.0
- μ:
  
  0.5
- G_c:
  
  1.0
- k:
  
  5.0
- A_D:
  
  2.0
- n_D:
  
  10000.0
Boundary condition parameters
- p_top:
  
  0.005
Initial condition parameters
- a₀:
  
  0.025