[Cleanup] Rename: FrictionPotential -> TruncatedRateState

dune/tectonic/frictionpotential.hh

@@ -27,9 +27,9 @@ class FrictionPotentialWrapper {
   void virtual updateAlpha(double) = 0;
 };
 
-class FrictionPotential : public FrictionPotentialWrapper {
+class TruncatedRateState : public FrictionPotentialWrapper {
 public:
-  FrictionPotential(double coefficient, double _normalStress, FrictionData _fd)
+  TruncatedRateState(double coefficient, double _normalStress, FrictionData _fd)
       : fd(_fd), weight(coefficient), normalStress(_normalStress) {}
 
   double coefficientOfFriction(double V) const {

dune/tectonic/globalratestatefriction.hh

@@ -45,7 +45,7 @@ class GlobalRateStateFriction : public GlobalFriction<Matrix, Vector> {
         restrictions[i] = trivialNonlinearity;
         continue;
       }
-      auto const fp = std::make_shared<FrictionPotential>(
+      auto const fp = std::make_shared<TruncatedRateState>(
           weights[i], normalStress[i], frictionInfo(coordinate));
       restrictions[i] = std::make_shared<Friction>(fp);
     }