TeimOrbit 2D Road Type: flatbelt

The rotating flatbelt testrig is implemented as a 2D road type. If the ROAD_TYPE is set to flatbelt, COSIN/road searches and reads the following data items in the [PARAMETERS] section:
Name of input variable Unit Meaning
number_cleats - Number of extra cleats on belt (number_cleats = 0 allowed)
cleat_direction angle Direction of cleat relative to belt lateral direction. Direction is zero if cleat is oriented exactly in transversal direction. Direction angle is measured counter-clockwise if looking from above onto the belt surface.

Default value is 0 (transversal cleat).
mu_factor_cleat - Friction modification factor on cleats.

The flatbelt speed is defined by one of the following alternatives:

Either:
v
v length/time Constant rotation speed of drum surface.
acceleration_time time Time span at beginning of dynamic simulation, to accelerate belt from stand-still to nominal velocity.

Default value is 0.
Or:
data sub-section (TV_DATA) Arbitrarily many lines with 2 values of type: time, length/time Data pairs defining speed-vs.-time data of the belt’s time-dependent surface speed profile.

t values (first value in each line) should be in ascending order.

The exact geometry of the cleat is defined by one of the three following alternatives:

Either:
cleat_height length Height of cleats.
cleat_length length Length of cleat, measured in circumferential direction of belt.
cleat_bevel_edge_length length Length of bevel edge of cleat, measured in circumferential direction of belt. Bevel edge has 45 degree slope.
cleat_edge_rounded -
0
Cleat bevel edge is flat.
1
Cleat bevel edge is rounded by a quarter circle.
Or:
data sub-section (XZR_DATA) Arbitrarily many lines with data of type: 3 x length Data triples defining x and z data of the cross section of the cleat, together with rounding radii in these data points. Rounding radii may be zero. x values should be in ascending order. First and last y value should be zero.
Optionally, the exact height geometry of the stoppers can be specified by spline data:
data sub-section (stopper_geometry) Arbitrarily many lines with data of type: 2 x length Data pairs defining x and z data of the stoppers. x values must be non-negative and ascending: x = 0 refers to the start in longitudinal direction of the stopper.