modelExtension
Spring for modeling extensional stiffness of a cloth block.
Information
Spring for modeling extensional stiffness in the spring/mass formulation of the cloth block.
Copyright © 2018
ATA ENGINEERING, INC.
ALL RIGHTS RESERVED
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Boolean | animation | true | = true, if animation shall be enabled |
| SI.Length | s_0 | 1.0 | Unstretched spring length |
| SI.TranslationalSpringConstant | k | Spring stiffness | |
| Real | d | 0.01 | Damping |
| Boolean | steadyState | false | |
| Advanced | |||
| SI.Position | s_small | 0.000001 | Prevent zero-division if relative distance s=0 |
| Animation › if animation = true | |||
| Integer | numberOfWindings | 5 | Number of spring windings |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Interfaces.Location | location_a | ||
| Interfaces.Location | location_b |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| SI.Force | f | Line force acting on frame_a and on frame_b (positive, if acting on frame_b and directed from frame_a to frame_b) | |
| SI.Position | s | (Guarded) distance between the origin of frame_a and the origin of frame_b (>= s_small)) | |
| Real[3] | e_a | Unit vector on the line connecting the origin of frame_a with the origin of frame_b resolved in frame_a (directed from frame_a to frame_b) | |
| SI.Position[3] | r_rel_a | Position vector from origin of frame_a to origin of frame_b, resolved in frame_a | |
| SI.Distance | width | world.defaultForceWidth | Width of spring |
| SI.Distance | coilWidth | width/10 | Width of spring coil |
| Types.Color | color | Modelica.Mechanics.MultiBody.Types.Defaults.SpringColor | Color of spring |
| Types.SpecularCoefficient | specularCoefficient | world.defaultSpecularCoefficient | Reflection of ambient light (= 0: light is completely absorbed) |