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Mass

Sliding mass with inertia

Modelica Standard Library

	Description
	The Mass component models a fixed mass with two rigidly connected translational flanges. The mass is centered between the flanges.

	Equations
	$m a = f_{a} + f_{b}$ $a = \overset{&period;}{v}$ $v = \overset{&period;}{s}$ $s_{a} = s - \frac{1}{2} L$ $s_{b} = s + \frac{1}{2} L$

Variables

Name	Units	Description	Modelica ID
$s$	$m$	Absolute position of center of component	s
$s_{x}$	$m$	Absolute position of flange $x, x \in \{a, b\}$	flange_x.s
$v$	$\frac{m}{s}$	Absolute velocity of component	v
$a$	$\frac{m}{s^{2}}$	Absolute acceleration of component	a

Connections

Name	Description	Modelica ID
${flange}_{a}$	Left flange of translational component	flange_a
${flange}_{b}$	Right flange of translational component	flange_b

Parameters

General Parameters

Name	Default	Units	Description	Modelica ID
$m$	$1$	$kg$	Mass of the sliding mass	m
$L$	$0$	$m$	Length of component from left flange to right flange	L

Advanced Parameters

Name	Default	Units	Description	Modelica ID
State Select	$default$		Prioritize $s$ and $v$ 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

Common Translational Components

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