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Defining Hub AttachmentsYou can now define the hub bearing revolute joint between the wheel carrier and the hub. To define the hub attachment: 1) Create a revolute joint as follows: Joint Name: hub_bearing I Part: ._macpherson.gel_wheel_carrier J Part: ._macpherson.gel_hub Joint Type: revolute Active: always Coordinate Reference: ._macpherson.ground.hpl_wheel_center Orientation Dependency: Delta orientation from coordinate Construction Frame: ._macpherson.ground.cfl_hub_bearing 2) Select OK. Defining Suspension Parameters You create a steering axis using the geometric method for calculating steer axes. When using the geometric method, ADAMS/Car calculates the steer axis by passing a line through two non-coincident hardpoints located on the steer axis. To use the geometric method, you must identify the part(s) and two hardpoints that fix the steer axis. To create a steer axis: 1) From the Buildmenu, point to Suspension Parameters,point to Characteristic Array, and then select Set. 2) Fill in the dialog box as shown next, and then select OK. Creating a Suspension Subsystem In this section, you create an ADAMS/Car suspension subsystem that is based on the template you just built. You also modify some hardpoints and translate the subsystem to ensure that ADAMS/Car correctly positions the subsystem within the assembly. To create a subsystem: 1) From the Filemenu, point to New,and then select Subsystem. 2) Fill in the dialog box as shown next, and then select OK. ADAMS/Car displays the following message: The template _macpherson exists in memory. Do you want to use it? 3) Select Yes. ADAMS/Car displays the subsystem. To modify hardpoints: 1) From the Adjustmenu, point to Hardpoint,and then select Table. 2) Modify the hardpoint values to match those listed in Table 8.3:
Date: 2015-12-18; view: 1141
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