Rotational Spring Damper - MapleSim Help

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Rotational Spring Damper

Linear 1D rotational spring and damper in parallel

 

Description

Equations

Variables

Connections

Parameters

Modelica Standard Library

Description

The Rotational Spring Damper (or Spring Damper) component models a spring and damper connected in parallel.

An optional heat port provides a thermal connection to the power dissipated in the damper; the spring-damper parameters are not temperature dependent.

Equations

τ=τc+τd=τa=τb

τc=cφrelφrel0

τd=dwrel

φrel=φbφa

wrel=φ.rel

arel=w.rel

lossPower=τdwrel

Variables

Name

Units

Description

Modelica ID

arel

rads2

Relative angular acceleration

a_rel

φrel

rad

Relative rotation angle

phi_rel

τ

Nm

Torque between flanges

tau

τc

Nm

Torque from spring

tau_c

τd

Nm

Torque from damper

tau_d

wrel

rads

Relative angular velocity

w_rel

lossPower

W

Loss power leaving component via heatPort

lossPower

Connections

Name

Description

Modelica ID

flangea

Left flange of compliant 1-dim. rotational component

flange_a

flangeb

Right flange of compliant 1-dim. rotational component

flange_b

heatPort

Optional heat port

heatPort

Parameters

General Parameters

Name

Default

Units

Description

Modelica ID

c

100000

Nmrad

Spring constant

c

d

0

Nmsrad

Damping constant

d

φrel0

0

rad

Unstretched spring angle

phi_rel0

Use Heat Port

false

 

True (checked) means heat port is enabled

useHeatPort

Advanced Parameters

Name

Default

Units

Description

Modelica ID

φnominal

1·10−4

rad

Nominal value of φrel; affects scaling

phi_nominal

State Select

prefer

 

Prioritize φrel and wrel 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

Rotational Springs and Dampers