Rotational Elasto-Backlash - MapleSim Help

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Rotational Elasto-Backlash

Backlash connected in series to linear spring and damper (backlash is modeled with elasticity)

 

Description

Parameters

Constants

Modelica Standard Library

Description

The Rotational Elasto Backlash (or Elasto Backlash) component consists of a backlash element connected in series with spring and damper elements which are connected in parallel. The spring constant must be positive.

In the backlash region b2φbφaφrel0b2 no torque is exerted. Outside of this region, contact is present and the contact torque is basically computed with a linear spring/damper characteristic.

If the backlash parameter b is smaller than bε, the backlash is ignored and the component reduces to a spring/damper element in parallel.

During initialization, the backlash characteristic is replaced by a continuous approximation in the backlash region.

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

b

0

rad

Total backlash

b

c

100000

Nmrad

Spring constant; must be positive

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

phi_nominal

State Select

prefer

 

Prioritize φrel and wrel as states

stateSelect

Constants

Name

Value

Units

Description

Modelica ID

bε

1·10−10

rad

Minimum backlash

bEps

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