Hello all,

I have faced a problem with the model Gears. Simulation crashes with an error message:

Simulation execution failed for model: Gears
Assertion failed: current_state.real_buffer_ptr + n < NR_REAL_ELEMENTS, file memory_pool.c, line 101

Can someone give me help with this problem? Is there something missing in the model?

I am working with:
OMEdit - OpenModelica Connection Editor Version: 1.7.0, revision 8711.

Thanks,
pekka

model Gears
  Modelica.Blocks.Sources.Ramp ramp1(height = 1, duration = 0.5, offset = 0, startTime = 0.2);
  Modelica.Mechanics.Rotational.Sources.Torque torque1;
  Modelica.Mechanics.Rotational.Components.Fixed fixed1;
  Modelica.Mechanics.Rotational.Components.Inertia inertia1(J = 1);
  Modelica.Mechanics.Rotational.Components.Clutch clutch1(mue_pos = [0,0.5], peak = 1, cgeo = 1, fn_max = 1000);
  Modelica.Mechanics.Rotational.Components.Clutch clutch2(mue_pos = [0,0.5], peak = 1, cgeo = 1, fn_max = 1000);
  Modelica.Mechanics.Rotational.Components.Clutch clutch3(mue_pos = [0,0.5], peak = 1, cgeo = 1, fn_max = 1000);
  Modelica.Mechanics.Rotational.Components.Clutch clutch4(mue_pos = [0,0.5], peak = 1, cgeo = 1, fn_max = 1000);
  Modelica.Mechanics.Rotational.Components.Clutch clutch5(mue_pos = [0,0.5], peak = 1, cgeo = 1, fn_max = 1000);
  Modelica.Blocks.Sources.Constant constant1(k = 1);
  Modelica.Blocks.Sources.Constant constant2(k = 0);
  Modelica.Mechanics.Rotational.Components.IdealGear idealgear1(ratio = 8);
  Modelica.Mechanics.Rotational.Components.IdealGear idealgear2(ratio = 6);
  Modelica.Mechanics.Rotational.Components.IdealGear idealgear3(ratio = 4);
  Modelica.Mechanics.Rotational.Components.IdealGear idealgear4(ratio = 2);
  Modelica.Mechanics.Rotational.Components.IdealGear idealgear5(ratio = 1);
  Modelica.Mechanics.Rotational.Components.Inertia inertia2(J = 100);
  annotation(experiment(StartTime = 0.0, StopTime = 1.0, Tolerance = 1e-06));
equation
  connect(ramp1.y,torque1.tau);
  connect(torque1.flange,inertia1.flange_a);
  connect(fixed1.flange_b,torque1.support);
  connect(inertia1.flange_b,clutch1.flange_a);
  connect(inertia1.flange_b,clutch2.flange_a);
  connect(inertia1.flange_b,clutch3.flange_a);
  connect(inertia1.flange_b,clutch4.flange_a);
  connect(inertia1.flange_b,clutch5.flange_a);
  connect(constant1.y,clutch1.f_normalized);
  connect(constant2.y,clutch2.f_normalized);
  connect(constant2.y,clutch3.f_normalized);
  connect(constant2.y,clutch4.f_normalized);
  connect(constant2.y,clutch5.f_normalized);
  connect(clutch1.flange_b,idealgear1.flange_a);
  connect(clutch2.flange_b,idealgear2.flange_a);
  connect(clutch3.flange_b,idealgear3.flange_a);
  connect(clutch4.flange_b,idealgear4.flange_a);
  connect(clutch5.flange_b,idealgear5.flange_a);
  connect(idealgear1.flange_b,inertia2.flange_a);
  connect(idealgear2.flange_b,inertia2.flange_a);
  connect(idealgear3.flange_b,inertia2.flange_a);
  connect(idealgear4.flange_b,inertia2.flange_a);
  connect(idealgear5.flange_b,inertia2.flange_a);
end Gears;