Tire Graphics
By default tire graphics are generated in Adams View and Adams Car based upon the following keywords in the DIMENSION section of the tire property file:
[DIMENSION] | | |
UNLOADED_RADIUS | = 0.312 | $Free tyre radius |
WIDTH | = 0.195 | $Nominal section width of the tyre |
ASPECT_RATIO | = 0.65 | $Nominal aspect ratio |
RIM_RADIUS | = 0.19 | $Nominal rim radius |
RIM_WIDTH | = 0.1524 | $Rim width |
CAD geometry can be use instead of these default graphics. With an EXTERNAL_GRAPHICS block, a reference is made to an external file. The supported formats are listed in the table below:
File format | File extension |
|---|
Shell | shl |
Wavefront | obj |
Stereolithography | stl |
Parasolid (ascii) | x_t, xmt_txt |
Parasolid (binary) | x_b, xmt_bin |
IGS | igs, iges |
STEP | stp, step |
For example, see <acar_concept.cdb/tires.tbl/pac2002_235_40_R18.tir> in your Adams Car installation.
Example file contents:
$----------------------------------------------------external_graphics
[EXTERNAL_GRAPHICS]
WHEEL_GRAPHICS = 'mdids://acar_concept/shell_graphics.tbl/wheel_graphics.shl'
TIRE_GRAPHICS = 'mdids://acar_concept/shell_graphics.tbl/tire_graphics.shl'
There may be differences in coordinate systems between the CAD files and the Adams model. In order to accommodate a delta in the coordinate systems, the <acar_shared>/templates.tbl/_handling_tire.tpl template contains a parameter variable pv[lr]_graphics_angle_offset. See <acar_concept.cdb>/subsystems.tbl/pickup_truck_front_tires.sub for an example use case.