VariableDamper
model VariableDamper "1D translational damper with variable damping factor"
input Modelica.Blocks.Interfaces.RealInput d(unit = "Ns/m") "Variable damping factor"
annotation (Placement(
visible = true,
transformation(
origin = {0, 80},
extent = {
{-20, -20},
{20, 20}},
rotation = -90),
iconTransformation(
origin = {0, 80},
extent = {
{-20, -20},
{20, 20}},
rotation = -90)));
extends Modelica.Mechanics.Translational.Interfaces.PartialCompliantWithRelativeStates;
extends Modelica.Thermal.HeatTransfer.Interfaces.PartialElementaryConditionalHeatPortWithoutT;
equation
f = d * v_rel;
lossPower = f * v_rel;
annotation (
Documentation(info = "<html>\n <p>\n <em>Linear, velocity dependent damper</em> element. It can be either connected\n between a sliding mass and the housing (model Fixed), or\n between two sliding masses.\n </p></html>"),
Icon(
coordinateSystem(
preserveAspectRatio = true,
extent = {
{-100, -100},
{100, 100}}),
graphics = {
Line(
points = {
{-90, 0},
{100, 0}},
color = {0, 127, 0}),
Line(points = {
{-60, -30},
{-60, 30}}),
Rectangle(
lineColor = {0, 127, 0},
fillColor = {192, 192, 192},
fillPattern = FillPattern.Solid,
extent = {
{-60, 30},
{30, -30}}),
Polygon(
lineColor = {95, 127, 95},
fillColor = {95, 127, 95},
fillPattern = FillPattern.Solid,
points = {
{50, -90},
{20, -80},
{20, -100},
{50, -90}}),
Line(
points = {
{-60, -90},
{20, -90}},
color = {95, 127, 95}),
Line(
visible = false,
points = {
{-100, -100},
{-100, -20},
{-14, -20}},
color = {191, 0, 0},
pattern = LinePattern.Dot),
Line(
points = {
{60, -30},
{-60, -30},
{-60, 30},
{60, 30}},
color = {0, 127, 0}),
Line(
points = {
{0, -60},
{0, 60}},
rotation = -30),
Polygon(
origin = {30, 52},
rotation = -30,
fillPattern = FillPattern.Solid,
points = {
{0, 0},
{-5, -20},
{5, -20},
{0, 0}})}),
Diagram(
coordinateSystem(
preserveAspectRatio = true,
extent = {
{-100, -100},
{100, 100}}),
graphics = {
Line(points = {
{-90, 0},
{-60, 0}}),
Line(points = {
{-60, -30},
{-60, 30}}),
Line(points = {
{-60, -30},
{60, -30}}),
Line(points = {
{-60, 30},
{60, 30}}),
Rectangle(
fillColor = {192, 192, 192},
fillPattern = FillPattern.Solid,
extent = {
{-60, 30},
{30, -30}}),
Line(points = {
{30, 0},
{90, 0}}),
Line(
points = {
{-50, 60},
{50, 60}},
color = {128, 128, 128}),
Polygon(
lineColor = {128, 128, 128},
fillColor = {128, 128, 128},
fillPattern = FillPattern.Solid,
points = {
{50, 63},
{60, 60},
{50, 57},
{50, 63}}),
Text(
lineColor = {128, 128, 128},
extent = {
{-58, 68},
{42, 78}},
textString = "der(s_rel)")}));
end VariableDamper;