Translational Spring Damper - MapleSim Help

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Translational Spring Damper

Linear 1D translational spring and damper in parallel

Modelica Standard Library

	Description
	The Translational Spring Damper (or Spring Damper) component consists of spring and damper elements connected in parallel.

	Equations
	$f = f_{c} + f_{d} = - f_{a} = f_{b}$ $f_{c} = c (s_{rel} - s_{rel0})$ $f_{d} = d v_{rel}$ $s_{rel} = s_{b} - s_{a}$ $v_{rel} = {\overset{&period;}{s}}_{rel}$ $lossPower = f_{d} v_{rel}$

Variables

Name	Units	Description	Modelica ID
$f$	$N$	Force between flanges	f
$f_{c}$	$N$	Force from spring	f_c
$f_{d}$	$N$	Force from damper	f_d
$f_{x}$	$N$	Force applied to ${flange}_{x}, x \in \{a, b\}$	flange_x.f
$s_{rel}$	$m$	Relative distance between flanges	s_rel
$s_{x}$	$m$	Absolute position of ${flange}_{x}, x \in \{a, b\}$	flange_x.s
$v_{rel}$	$\frac{m}{s}$	Relative velocity between flanges	v_rel
$lossPower$	$W$	Loss power leaving component via heatPort	lossPower

Connections

Name	Description	Modelica ID
${flange}_{a}$	Left flange of compliant 1-dim. translational component	flange_a
${flange}_{b}$	Right flange of compliant 1-dim. translational component	flange_b
$heatPort$	Optional heat port	heatPort

Parameters

General Parameters

Name	Default	Units	Description	Modelica ID
$c$	$1$	$\frac{N}{m}$	Spring constant	c
$d$	$1$	$\frac{N s}{m}$	Damping constant	d
$s_{rel0}$	$0$	$m$	Unstretched spring length	s_rel0
Use Heat Port	$false$		True (checked) means heat port is enabled	useHeatPort

Advanced Parameters

Name	Default	Units	Description	Modelica ID
$s_{nominal}$	$1 \cdot 10^{−4}$	$m$	Nominal value of $s_{rel}$	s_nominal
State Select	$prefer$		Prioritize $s_{rel}$ and $v_{rel}$ as states	stateSelect

	Modelica Standard Library
	The component described in this topic is from the Modelica Standard Library. To view the original documentation, which includes author and copyright information, click here.

See Also

1-D Mechanical Overview

Translational Springs and Dampers

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