27.2.5. Double Pin Track Link
The track chain system consists of the track links and connecting bushings. There are two types of bushings.
A double pin track link is mainly used for a heavy and high mobility tracked vehicle. When two adjacent track links are connected by the double pin track link, the pin connector element has very small mass and mass moment of inertia, compared to those of the track links. Therefore, the dynamic effects of connector element are negligible. Therefore, the connector is modeled as a compliant element to reduce the number of degrees of freedom. The geometric information of the double pin track link is used for both display and contact force computation in the solver.
Ll |
Link Body Left Length |
Lr |
Link Body Right Length |
Hu |
Link Body Upper Height |
Hb |
Link Body Lower Height |
Le |
End Connector Length |
Wb |
Link Body Width |
Lp |
Pin Length |
Rp |
Pin Radius |
Lc |
Centerguide Length |
Tc |
Centerguide Thickness |
Plc |
Left Pin Position |
Prc |
Right Pin Position |
Pc |
Centerguide Position |
27.2.5.1. Modeling Options
The user can create a sprocket as follows.
Point, WithDialog
Point: Selects a point on Ground to define the track link. It doesn’t matter where the track link is because the created body is a clone body for segment assembly.
WithDialog: Modifies the property for the track link. The track link is created with clicking OK.
27.2.5.2. Properties
The Double Pin Track Link property page is shown in Figure 27.41. The parameters are explained below. In order to understand the geometry, refer to Dimension Information.
No. of Links
Link Body: Defines geometric characteristics for Link Body.
Left Length (Ll): Enters the left length of link.
Right Length (Lr): Enters the right length of link.
Upper Height (Hu): Enters the upper height of link.
Lower Height (Hb): Enters the lower height of link.
Width (Wb): Enters the width of link.
End Connector Length (Le): Enter the length of end connector.
Pin Length (Lp): Enters the length of pin body.
Pin Radius (Rp): Enters the radius of pin body.
Centerguide Length (Lc): Enters the length of center guide body.
Centerguide Thickness (Tc): Enters the thickness of center guide body.
Left Pin Position (Plp): Enters the position of left pin body.
Right Pin Position (Rrp): Enters the position of right pin body.
Centerguide Position (Pc): Enters the position of center guide body.
Draw: Shows the shoe pad geometry. The user can change the position and size. Also, the shoe pad geometry can modified in Shoe Pad page.
Define First Shoe Pad: The user can create a shoe pad by a mouse in Draw dialog box. It can be available in the link.
Define Second Shoe Pad: If Double Shoe Pad in Shoe Pad page is used, this function is activated. The user can create a shoe pad by a mouse in Draw dialog box. It can be available in the link.
Dimension Information: Shows dimension information of the geometry for Roller Link.
Calculator: It is useful for finding specific value to define the relation of between sprockets and Track links. Refer to Calculator.