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Add 1d translational lever #4538
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ac8fc82
Add translational model of lever
tobolar 763e58b
Add test GearAndLever
tobolar abed982
Update ModelicaTest/Resources/Reference/ModelicaTest/Translational/Ge…
tobolar b65221b
Merge branch 'master' into addLever_1dTranslational
tobolar bc4cf65
Rename lever and change its icon
tobolar 383f609
Change documentation
tobolar f11e4f7
Merge branch 'master' into addLever_1dTranslational
tobolar 627fafb
Rename test GearAndLever to IdealGears
tobolar 219a870
Do not check ratio's magnitude
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,64 @@ | ||
| within Modelica.Mechanics.Translational.Components; | ||
| model IdealGear "Ideal gear without mass" | ||
| extends Modelica.Mechanics.Translational.Interfaces.PartialElementaryTwoFlangesAndSupport2; | ||
| parameter Real ratio(start=1) | ||
| "Transmission ratio (flange_a.s/flange_b.s)"; | ||
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| equation | ||
| s_a = ratio*s_b; | ||
| 0 = ratio*flange_a.f + flange_b.f; | ||
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| annotation ( | ||
| Documentation(info="<html> | ||
| <p> | ||
| This element characterizes any type of gear which is fixed in the | ||
| ground and which has one driving flange and one driven flange. | ||
| The gear is <strong>ideal</strong>, i.e., it does not have mass, elasticity, damping | ||
| or backlash. If these effects have to be considered, the gear has to be | ||
| connected to other elements in an appropriate way. | ||
| </p> | ||
| </html>"), | ||
| Icon( | ||
| coordinateSystem(preserveAspectRatio=true, | ||
| extent={{-100,-100},{100,100}}), | ||
| graphics={ Line(points={{70,0},{100,0}}, color={0,127,0}), | ||
| Line(points={{-100,0},{-70,0}},color={0,127,0}), | ||
| Ellipse( | ||
| extent={{-38,38},{38,-38}}, | ||
| fillColor={255,255,255}, | ||
| fillPattern=FillPattern.Solid, | ||
| lineColor={95,95,95}), | ||
| Ellipse( | ||
| extent={{-16,16},{16,-16}}, | ||
| fillColor={255,255,255}, | ||
| fillPattern=FillPattern.Solid, | ||
| lineColor={95,95,95}), | ||
| Polygon( | ||
| points={{76,-10},{76,0},{76,24},{-42,24},{-42,16},{56,16},{66,-10},{76,-10}}, | ||
| lineColor={0,127,0}, | ||
| fillColor={160,215,160}, | ||
| fillPattern=FillPattern.Solid), | ||
| Line( | ||
| points={{0,-54},{0,0}}, | ||
| color={0,127,0}), | ||
| Line( | ||
| points={{0,-100},{0,-78}}, | ||
| color={0,127,0}), | ||
| Ellipse( | ||
| extent={{-4,4},{4,-4}}, | ||
| lineColor={0,127,0}, | ||
| fillColor={160,215,160}, | ||
| fillPattern=FillPattern.Solid), | ||
| Text( | ||
| extent={{-150,100},{150,60}}, | ||
| textColor={0,0,255}, | ||
| textString="%name"), | ||
| Text( | ||
| extent={{-100,-50},{100,-80}}, | ||
| textString="ratio=%ratio"), | ||
| Polygon( | ||
| points={{50,48},{50,38},{-52,38},{-66,-10},{-76,-10},{-76,48},{50,48}}, | ||
| lineColor={95,95,95}, | ||
| fillColor={131,175,131}, | ||
| fillPattern=FillPattern.Solid)})); | ||
| end IdealGear; | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,61 @@ | ||
| within Modelica.Mechanics.Translational.Examples; | ||
| model GearGrounded "Translational grounded gear" | ||
| extends Modelica.Icons.Example; | ||
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| Sources.Force force annotation (Placement(transformation(extent={{-70,-10},{-50,10}}))); | ||
| Components.IdealGear idealGear( | ||
| ratio=1.6, | ||
| useSupport=true) annotation (Placement(transformation(extent={{-10,-10},{10,10}}))); | ||
| Components.Mass mass1( | ||
| m=0.1) annotation (Placement(transformation(extent={{-40,-10},{-20,10}}))); | ||
| Components.Mass mass2( | ||
| m=7, | ||
| s(fixed=true, start=0), | ||
| v(fixed=true, start=0)) annotation (Placement(transformation(extent={{20,-10},{40,10}}))); | ||
| Components.SpringDamper springDamper( | ||
| c=160, | ||
| d=10, | ||
| s_rel0=0.1) annotation (Placement(transformation(extent={{50,-10},{70,10}}))); | ||
| Components.SpringDamper springDamperSupport( | ||
| s_rel(fixed=true), | ||
| v_rel(fixed=true), | ||
| c=800, | ||
| d=50) annotation (Placement(transformation(extent={{-40,-50},{-20,-30}}))); | ||
| Blocks.Sources.Ramp ramp( | ||
| height=10, | ||
| duration=0.6, | ||
| offset=springDamper.s_rel0*springDamper.c/idealGear.ratio, | ||
| startTime=0.3) | ||
| annotation (Placement(transformation(extent={{-100,-10},{-80,10}}))); | ||
| Components.Fixed fixed annotation (Placement(transformation(extent={{-70,-50},{-50,-30}}))); | ||
| Components.Fixed fixed1 annotation (Placement(transformation(extent={{70,-10},{90,10}}))); | ||
| equation | ||
| connect(mass1.flange_b, idealGear.flange_a) annotation (Line(points={{-20,0},{-10,0}}, color={0,127,0})); | ||
| connect(idealGear.flange_b, mass2.flange_a) annotation (Line(points={{10,0},{20,0}}, color={0,127,0})); | ||
| connect(ramp.y, force.f) annotation (Line(points={{-79,0},{-72,0}}, color={0,0,127})); | ||
| connect(force.flange, mass1.flange_a) annotation (Line(points={{-50,0},{-40,0}}, color={0,127,0})); | ||
| connect(fixed.flange, springDamperSupport.flange_a) annotation (Line(points={{-60,-40},{-40,-40}}, color={0,127,0})); | ||
| connect(springDamperSupport.flange_b, idealGear.support) annotation (Line(points={{-20,-40},{0,-40},{0,-10}}, color={0,127,0})); | ||
| connect(mass2.flange_b, springDamper.flange_a) annotation (Line(points={{40,0},{50,0}}, color={0,127,0})); | ||
| connect(springDamper.flange_b, fixed1.flange) annotation (Line(points={{70,0},{80,0}}, color={0,127,0})); | ||
| annotation ( | ||
| experiment( | ||
| StopTime=3.0, | ||
| Interval=0.001), | ||
| Documentation(info="<html> | ||
| <p> | ||
| The <code>flange_a</code> of the ideal gear is driven by an external ramp-formed | ||
| force. | ||
| Via the elastically mounted gear the translational energy is transmitted to | ||
| a load mass where a preload force of <code>springDamper</code> acts against | ||
| the external force. | ||
| For ratio <code>idealGear.ratio > 1</code> the driven flange | ||
| <code>flange_b</code> performs smaler movement then the driving flange | ||
| <code>flange_a</code>. | ||
| </p> | ||
| <p> | ||
| Simulate for 3 seconds and plot e.g. the position of masses: | ||
| <code>mass1.s</code>, <code>mass2.s</code> | ||
| </p> | ||
| </html>")); | ||
| end GearGrounded; |
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| Original file line number | Diff line number | Diff line change |
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@@ -4,6 +4,7 @@ WhyArrows | |
| Accelerate | ||
| CompareBrakingForce | ||
| Damper | ||
| GearGrounded | ||
| Oscillator | ||
| Sensors | ||
| Friction | ||
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5 changes: 5 additions & 0 deletions
5
...s/Reference/Modelica/Mechanics/Translational/Examples/FirstGrounded/comparisonSignals.txt
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,5 @@ | ||
| time | ||
| damper.s_rel | ||
| damper.v_rel | ||
| mass3.s | ||
| mass3.v | ||
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10 changes: 10 additions & 0 deletions
10
...icaTest/Resources/Reference/ModelicaTest/Translational/GearAndLever/comparisonSignals.txt
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| Original file line number | Diff line number | Diff line change |
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| time | ||
| inertia1.phi | ||
| inertia1.w | ||
| inertia3.phi | ||
| inertia3.w | ||
| mass1.s | ||
| mass1.v | ||
| mass3.s | ||
| mass3.v | ||
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Almost all elements where it is relevant to have a connection to ground/support/housing has an optional such connector. any particular reason this one is different?
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No particular reason for this. I simply took and modified documentation of
Modelica.Mechanics.Rotational.Components.IdealGearwhich refers to the ground in the same manner.