$t_a$

Upstream tension

$t_b$

Downstream tension

$v_a$

Upstream speed

$v_b$

Downstream speed

$\mathrm{\tau }$

Friction torque applied to the roller by the span

$R$

Roller effective radius

${\mathrm{\omega }}_r$

Roller angular velocity

$v_0$

Smoothing velocity value

Name

Default

Units

Description

Modelica ID

Use Default Properties (WP1)

true

When checked (true), web properties are defined by the closest Web Properties block found

useDefault

Web Properties

WP1

Name of the record containing the web properties (enabled when Use default properties = false)

wp

Name

Default

Units

Description

Modelica ID

Use alternative configuration

$\mathrm{false}$

Choose between two possible solutions for the web/roll configuration

useAltConfig

Flip direction

$\mathrm{false}$

Use this option when building web lines that go from right to left

flipDirection

Use fixed base

$\mathrm{false}$

When checked (true), frame_c is disabled and the roller frame is fixed in the inertial coordinate frame (addition position and orientation parameters are enabled instead)

useFixedBase

$r$

$\left[0\,0\right]$

$m$

Location of frame_b with respect to ground. Available when Use fixed base = true

InitPos

$\mathrm{\theta }$

$0$

$\mathrm{deg}$

Rotation about z-axis. Available when Use fixed base = true

InitAng

Name

Default

Units

Description

Modelica ID

$\mathrm{D}$

$0.2$

$m$

Diameter of roller

D

Use CAD

$\mathrm{false}$

When checked (true), mass and inertia are defined from an externally attached CAD component or a rigid body component

useCAD

${\mathrm{D}}_i$

$0$

$m$

Inner diameter of roller

Di

$L$

$1.2$

$m$

Roller length

L

Use cylindrical geometry

$\mathrm{true}$

When checked (true), roller inertia is calculated assuming a uniform cylindrical geometry

useCylindricalGeometry

$\mathrm{\rho }$

$2.7·{10}^3$

$\frac{\mathrm{kg}}{m^3}$

Roller density; enabled when using cylindrical geometry

rho_roll

$m$

$1$

$\mathrm{kg}$

Roller mass; enabled when not using cylindrical geometry

m

$J$

$0.005$

$\mathrm{kg}{m}^2$

Roller rotational inertia; enabled when not using cylindrical geometry

J

$d$

$0$

$\frac{Nms}{\mathrm{rad}}$

Bearing viscous damping constant

d

Name

Default

Units

Description

Modelica ID

${\mathrm{\mu }}_c$

$0.2$

Coulomb coefficient of friction between web and roller

mu_c

${\mathrm{\mu }}_d$

$0$

Viscous coefficient of friction between web and roller

mu_d

$v_0$

$1·{10}^{\mathrm{-4}}$

$\frac{m}{s}$

Smoothing function scale, i.e. tanh(v_rel/v0)

v0

$n_{\mathrm{div}}$

$5$

Number of segments

nDiv

Name

Default

Units

Description

Modelica ID

$m_f$

$1$

$\mathrm{kg}$

Frame mass

m_frame

$J_f$

$0.01$

$\mathrm{kg}{m}^2$

Frame inertia

J_frame

Add frame offset

$\mathrm{false}$

When checked (true), frame connection point is placed at an offset w.r.t. the roll center

addFrameOffset

$r_f$

$\left[0\,\frac{\mathrm{D}}{2}\right]$

$m$

Offset in the XY plane; enabled when Add frame offset is true

rf

Name

Default

Units

Description

Modelica ID

Show roller

$\mathrm{true}$

When checked (true), a visualization of the roller is created

showVisualization_roller

Transparent roller

$\mathrm{false}$

When checked (true), the roller visualization is transparent

transparent_roller

Roller color

Blue

Roller color

color_roller

Band color

Yellow

Band color

color_band

Band angle

$20$

$\mathrm{deg}$

Band angle

band_angle

Show contact forces

$\mathrm{false}$

When checked (true), arrows are added to visualize discretized web/roller contact forces (normal + friction)

showContactForce

Scale

$100$

$\frac{m}{N}$

Force scale

forceScale

Color

Red

Force arrow color

forceColor

Transparency

$\mathrm{false}$

Force arrow transparency

forceTransparent

Show sliding velocity arrows

$\mathrm{false}$

When checked (true), an arrow is added to visualize local web/roller sliding velocity

showSlidingVelocity

Scale

$0.01$

$s$

Speed scale

speedScale

Color

Green

Speed arrow color

speedColor

Transparency

$\mathrm{false}$

Speed arrow transparency

speedTransparent

Name

Default

Units

Description

Modelica ID

Use effective radius

$\mathrm{false}$

When checked (true), the roller radius is padded with half the web thickness

useEffectiveRadius