VariableDamper

Linear 1D rotational damper

    VariableDamper

Library

ModelicaExtras/Mechanics/Rotational

Description

Linear, velocity dependent damper element. It can be either connected between an inertia or gear and the housing (component Fixed), or between two inertia/gear elements.

See also the discussion State Selection in the User's Guide of the Rotational library.

Parameters

VariableDamper_0

NameLabelDescriptionData TypeValid Values

mo_phi_rel

phi_rel

phi_rel

Structure

mo_phi_rel/fixed

fixed

Cell of scalars

true
false

mo_phi_rel/start

start

Cell of scalars

mo_w_rel

w_rel

w_rel

Structure

mo_w_rel/fixed

fixed

Cell of scalars

true
false

mo_w_rel/start

start

Cell of scalars

mo_a_rel

a_rel

a_rel

Structure

mo_a_rel/fixed

fixed

Cell of scalars

true
false

mo_a_rel/start

start

Cell of scalars

mo_useHeatPort

useHeatPort

=true, if heatPort is enabled

Number

0
1

VariableDamper_1

NameLabelDescriptionData TypeValid Values

mo_phi_nominal

phi_nominal

Nominal value of phi_rel (used for scaling)

Scalar

mo_stateSelect

stateSelect

Priority to use phi_rel and w_rel as states

Structure

mo_stateSelect/choice1

StateSelect.never

Number

0
1

mo_stateSelect/choice2

StateSelect.avoid

Number

0
1

mo_stateSelect/choice3

StateSelect.default

Number

0
1

mo_stateSelect/choice4

StateSelect.prefer

Number

0
1

mo_stateSelect/choice5

StateSelect.always

Number

0
1

VariableDamper_2

NameLabelDescriptionData TypeValid Values

mo__nmodifiers

Number of Modifiers

Specifies the number of modifiers

Number

mo__modifiers

Modifiers

Add new modifier

Structure

mo__modifiers/varname

Variable name

Cell of strings

'tau'
'lossPower'

mo__modifiers/attribute

Attribute

Cell of strings

'start'
'fixed'

mo__modifiers/value

Value

Ports

NameTypeDescriptionIO TypeNumber

d

implicit

Variable damping factor

input

1

flange_a

implicit

Left flange of compliant 1-dim. rotational component

input

2

flange_b

implicit

Right flange of compliant 1-dim. rotational component

output

1

Port 4

implicit

Optional port to which dissipated losses are transported in form of heat

input

mo_useHeatPort

See Also