threepoint_1.prm

# Three point bending test from 
# Miehe, Hofacker, Welschinger, 2010
# --------------------------------------------------------

subsection Global parameters
  set Global pre-refinement steps	= 0
  set Local pre-refinement steps  	= 0
  set Adaptive refinement cycles        = 1

  set Max No of timesteps  	  	= 8
  set Timestep size			= 5.0e-3
  set Timestep size to switch to	= 1.0e-3 
  set Switch timestep after steps	= 35


  set outer solver                      = active set 
  set test case                         = three point bending
  # phase field, 
  # phase field three point top
  # mix
  set ref strategy                      = phase field

  set value phase field for refinement  = 0.5
  set Output filename	    		= solution_tp_
end

subsection Problem dependent parameters
  set K reg				= 1.0e-10
  set Eps reg				= 2.0*h
  set Gamma penalization		= 0.0

  # Material and problem-rhs parameters
  set Pressure				= 0.0
  set Fracture toughness G_c		= 0.25 
  set Poisson ratio nu			= 0.3
  set E modulus	    			= 1e+3
  set Lame mu				= 8.0e+3
  set Lame lambda			= 12.0e+3	  
end 

subsection Solver parameters
  set Use Direct Inner Solver		   = false
  set Newton lower bound     		   = 1.0e-6
  set Newton maximum steps		   = 30
  set Upper Newton rho			   = 0.99
  set Line search maximum steps		   = 10
  set Line search damping 		   = 0.6
  set Decompose stress in rhs		   = 1.0
  set Decompose stress in matrix	   = 1.0

end