Improvements on the adaptive time stepping with automatic control

[wenqing]

~1. Changed convergence criterion of the Newton-Raphson step in the deformation analysis.~

2. Added a type of 11 for the adaptive time stepping with automatic control. The new type only introduces step size restriction. An example input are

   PI_AUTO_STEP_SIZE 
   11 1.0e-4 1.0e-10 3600.0 1.e-3 21600.0 0.5 0.2

   The meanings of the data are:

   • type: 11
   • relative error: 1.0e-4
   • absolute error: 1.e-10
   • initial step size: 3600.0
   • minimum step size: 1.e-3
   • maximum step size: 21600.0
   • rejected step size increment ratio, r1, which gives a restriction of h_new * r1. (r1=0.5)
   • step size increment ratio, r2, which gives a restriction of h_new/h_old <r2. (r2=0.2)

[norihiro-w]

👍

[bilke]

@wenqing Please note that envinf1 is offline until tomorrow..

[wenqing]

@bilke Thanks.