Translational Hardstop - MapleSim Help

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Translational Hardstop

Double-sided translational mechanism that restricts motion to a set length

 

Description

Equations

Variables

Connections

Parameters

Description

The Translational Hardstop component represents a double-sided translational mechanism that restricts the motion to a set length. The mechanism is assumed to be in the center of this region so that the solid connector, flangea, is attached to the center of the gap, and the hollow connector, flangeb, is attached to the frame that is moving back and forth.

The hardstop is modeled as a stiff spring-damper. The compliance of the mechanism can be controlled by adjusting the stiffness (c) and damping (d) coefficients in the component parameters.

Equations

srel=sbsavrel=s.rel

F&equals;Fb&equals;Fa&equals;{{csrelb2&plus;dvrelsrel&gt;b2csrel&plus;b2&plus;dvrelsrel<b20otherwiseb&gt;210−10csrel&plus;dvrelotherwise

Variables

Name

Units

Description

Modelica ID

F

N

Force at flangeb

F

Fx

N

Force at flange x&comma;xa&comma;b

flange_x.f

srel

m

Distance between flanges

s_rel

sx

m

Position of flange x&comma;xa&comma;b

flange_x.s

Connections

Name

Description

Modelica ID

flangea

Left flange of compliant 1-dim. translational component

flange_a

flangeb

Right flange of compliant 1-dim. translational component

flange_b

Parameters

General Parameters

Name

Default

Units

Description

Modelica ID

b

1

m

Distance between stops

b

c

1·1010

Nm

Spring constant

c

d

1·1010

Nsm

Damping constant

d

Advanced Parameters

Name

Default

Units

Description

Modelica ID

State Select

prefer

 

Prioritize srel and vrel as states

stateSelect

snominal

1·10−4

m

Nominal value of s_rel (used for scaling)

s_nominal

See Also

1-D Mechanical Overview

Translational Friction and Stops

1-D Mechanical Overview

Translational Friction and Stops