1、 Adams Tracked Vehicle Toolkit Template-based architecture Track Segment Customization Tutorial July 2009 MSC Software Sweden AB Adams Tracked Vehicle Toolkit Track Segment Customization Tutorial MSC Software Sweden AB 2 (17) The information in this document is furnished for informational use only,
2、may be revised from time to time, and should not be construed as a commitment by MSC Software Sweden AB. MSC Software Sweden AB assumes no responsibility or liability for any errors or inaccuracies that may appear in this document. This document contains proprietary and copyrighted information, MSC
3、Software Sweden AB permits licenses of Adams Tracked Vehicle toolkit software to print out or copy this document for internal use in connection with the licensed software. No part of this document may at any time be copied for any other purpose or distributed or translated into any other language or
4、 distributed to any third party without the prior written permission of MSC Software Sweden AB. Adams is a registered trademark of MSC Software. All other product names are trademarks of their respective companies. Copyright 2009 by MSC Software Sweden AB. All rights reserved. Adams Tracked Vehicle
5、Toolkit Track Segment Customization Tutorial MSC Software Sweden AB 3 (17) About This Document This document contains the Track Segment Customization Tutorial for the ATV template-based toolkit. Use the tutorial exercises to learn how to use the interface, and how to execute Track Testing simulation
6、s. The exercises are, when it comes to system specific commands, written for Windows platform where not explicitly stated UNIX. Adams Tracked Vehicle Toolkit Track Segment Customization Tutorial MSC Software Sweden AB 4 (17) Track Segment Customization Problem Statement In this exercise a customized
7、 Track Segment template will be created and used for simulation. Modify the existing Track Segment template to include a flexible guide. Use the new Track Segment with the standard Tank assembly. A note about adding elements to the Track Segment: Whatever is added to the Track Segment, it is importa
8、nt that everything is parameterized to follow the track segment part (or the connector part if the Track Segment is of type Double Pin or Rubber Track). If the parameterization is not done then the added elements will not follow when the Track System is wrapped. Load the ATV plug-in and open the exi
9、sting template First, you will load the Adams Tracked Vehicle Toolkit plugin and load the _track_segment2.tpl template. 1. Start Adams/View with the attached .bat file. The Adams Tracked Vehicle Toolkit plug-in will now automatically be loaded. 2. Select to run Template Builder. 3. Open the _track_s
10、egment2.tpl template from the ATV Shared Database. a. From the File menu, point to Open. b. In the Template Name file field, right click and select Search - /templates.tbl and select the _track_segment2.tpl template. c. Select OK. Save the template under a new name: 1. From the File menu, point to S
11、ave As 2. Type _track_segment_guide in the New Template Name field. 3. Make sure the Major Role is set to track_section. 4. Set the File Format to Ascii. 5. Select OK. Adams Tracked Vehicle Toolkit Track Segment Customization Tutorial MSC Software Sweden AB 5 (17) Create parameter variables The usag
12、e of parameter variables will enable modification of guide parameters from the Standard Interface. Please note: All parameter variables will be created as “single” (not left/right). The values are entered in the following units: mm, N, s, deg. The following parameter variables should be created: Nam
13、e: Value: Units: guide_height 90.0 length guide_width 50.0 length guide_length 50.0 length stiff_x 4.4e+05 stiffness stiff_y 4.4e+05 stiffness stiff_z 4.4e+05 stiffness damp_x 440.0 damping damp_y 440.0 damping damp_z 440.0 damping stiff_tx 2.4e+09 torque_stiffness stiff_ty 2.4e+09 torque_stiffness
14、stiff_tz 2.4e+09 torque_stiffness damp_tx 2.4e+06 torque_damping damp_ty 2.4e+06 torque_damping damp_tz 2.4e+06 torque_damping Adams Tracked Vehicle Toolkit Track Segment Customization Tutorial MSC Software Sweden AB 6 (17) Go to A/View Most of the modeling needs to be done in the Adams/View environ
15、ment. 1. From the Tools menu, select Adams/View Interface. Create reference marker on the track segment part A marker to use as reference for the guide and belonging elements will be created on each track segment. If the icons are not visible then please toggle icon visibility before continuing. 1.
16、Select the Marker constructor. 2. Make sure to select Add to Part. 3. Select the left track segment part to add the marker. 4. Do the same for the right side track segment. Please rename the markers to recognizable names. 1. Right click on the new marker on the left side track segment and select Ren
17、ame. 2. Enter the name guide_ref_left. 3. Name the right side marker guide_ref_right. The markers should now be parameterized to be on the inner surface of the track segment parts and keep the relative orientation. The goal is to parameterize the markers as shown in the dialog box below: To achieve
18、this, do the following: 1. Right click on the guide_ref_left marker and select modify. Adams Tracked Vehicle Toolkit Track Segment Customization Tutorial MSC Software Sweden AB 7 (17) 2. In the Location field, enter (LOC_RELATIVE_TO(0.0, 0.0, , ) 3. To get the first reference (inner_thickness), do t
19、his: a. From the Tools menu point to Database Navigator. b. Double click on the _track_segment_guide entry. c. Scroll down to uel_track_seg and double click on this. d. Scroll down to inner_thickness and double click on this. e. Copy the full name of the inner_thickness variable from the top field o
20、f the Information window. 4. Paste the inner_thickness full name into the Location field at the appropriate place with a minus in front of it. 5. To get the second reference the marker segment_ref, do the following: a. In the Database Navigator, scroll to the top, select the tsl_track_seg part and s
21、elect OK. b. Press the button Children in the Information window. c. Click on the segment_ref marker name (so that the top field is updated with the name). d. Copy the full name of the segment_ref marker from the top field of the Information window. 6. Paste the segment_ref full name into the Locati
22、on field at the appropriate place. 7. In the Orientation field, enter: (ORI_RELATIVE_TO(180.0, 180.0, 90.0, ._track_segment_guide.tsl_track_seg.segment_ref) Hint: Paste the segment_ref marker name again at the appropriate place. 8. Select Apply. Now parameterize the right-side marker by re-using the
23、 information of the left-side marker: 1. Right-click in the Name field of the Marker Modify dialog box and select ._track_segment_guide.tsl_track_seg.guide_ref_left barb2right Info. 2. Edit the Name field so that the guide_ref_right marker is referenced and hit Return. 3. Copy the Location informati
24、on from the Information window, and edit it so that the right-side inner_thickness parameter and segment_ref marker is used. 4. Copy the Orientation information from the Information window and edit to reference the right-side segment_ref marker. Adams Tracked Vehicle Toolkit Track Segment Customizat
25、ion Tutorial MSC Software Sweden AB 8 (17) 5. Select OK. Create guide parts Create the guide parts using the Main Toolbox of Adams/View and parameterize the geometry appropriately: 1. Switch to a Front view and fit the model display to the view. Hint: This can be done by writing F f on your keyboard
26、 while the main Adams/View window is active. 2. Select the Rigid Body: Box tool on the Main Toolbox. 3. Select the Length toggle button and enter pvs_guide_length in the Length field. The name is automatically enclosed in parentheses. 4. Select the Height toggle button and enter pvs_guide_width in t
27、he Height field. 5. Select the Depth toggle button and enter pvs_guide_height in the Depth field. 6. Now create the left-side guide part by clicking near the guide_ref_left marker. 7. Select the Rigid Body: Box tool again and create the right-side guide part near the guide_ref_right marker. 8. Renam
28、e the left-side guide part to txl_guide and the right-side guide part to txr_guide. 9. Rename both box-geometries to box and both reference markers to box_ref. Adams Tracked Vehicle Toolkit Track Segment Customization Tutorial MSC Software Sweden AB 9 (17) Note: Use the txlr_ prefix for the parts to
29、 make Adams Tracked Vehicle aware that these are left-right brothers. This is needed later when the guides are added to the contact geometries of the Track Segment. Now position the guide part geometries by modifying the reference markers. First the orientation of the markers: 1. Select the Orientat
30、ion parameterization tool on the Main Toolbox. 2. Make sure that you Collapse the markers. 3. Right-click the main window near reference marker of the txl_guide part and double-click the txl_guide.box_ref marker in the Select window that appears. 4. Right-click again near the left-side guide referen
31、ce, select the tsl_track_seg.guide_ref_left marker in the Select window and click OK. 5. Repeat steps 1-4 for txr_guide. Now the location of the markers: 1. Right-click on the guide_left.box_ref marker and select Modify. 2. In the Location field enter: (LOC_RELATIVE_TO(-0.5 * pvs_guide_length, -0.5
32、* pvs_guide_width, 0.0, ._track_segment_guide.tsl_track_seg.guide_ref_left) Hint: Copy appropriate information from the Orientation field and modify it. 3. Select OK. 4. Do the same for txr_guide.box_ref. Set the color of the guide parts: 1. In turn, right-click each of the guide parts, point to App
33、earance, enter Gray in the Color field and select OK. Considerations about wrapping: When the guide parts were created through the Adams/View interface, the parts were placed in global origo (0,0,0), and only the geometry (and CM-marker) is located near the segment parts. This means that when the tr
34、ack segments are copied and moved around, the guide parts will all remain in global origo and only the geometry will follow the track segments. Currently this is not a problem since the location of the guide parts CM-marker is Adams Tracked Vehicle Toolkit Track Segment Customization Tutorial MSC So
35、ftware Sweden AB 10 (17) automatically calculated by Adams. However, if the part should be modified and the CM location set to a fixed position, this position would also remain the same during wrapping of the Track System and would not move with the guide geometry. To avoid this potential problem it
36、 is recommended that the guide parts are parameterized to move with the track segment part. Do this by using the Location and Orientation parameterization tools: 1. Select the Location Parameterization tool. Make sure to Collapse the distance. 2. Select the txl_guide part to be parameterized. 3. Poi
37、nt to the guide_ref_left marker to use as reference. 4. Select the Orientation Parameterization tool. Make sure to Collapse the angle. 5. Select the txr_guide part to be parameterized. 6. Point to the guide_ref_left marker to use as reference. Create the bushing connection to the track segment part
38、The guide part should now be attached to the segment part. A bushing will be used for this purpose. To make the picking on the screen easier when creating the bushing, please now zoom in on the left-side track segment. Then follow these steps to create and parameterize the bushing: 7. In the Main To
39、olbox select the Connector: Bushing tool. Leave all default values, as the bushing will be modified further down. 8. Select the txl_guide part as the first body and the tsl_track_seg part as the second body. 9. Select the location to be at the position of the guide_ref_left marker. 10. Rename the bu
40、shing to guide_bushing_left. 11. Rename the I- and J-markers of the bushing to bushing_i and bushing_j. 12. Select the Location Parameterization tool. Make sure to Collapse the distance. Adams Tracked Vehicle Toolkit Track Segment Customization Tutorial MSC Software Sweden AB 11 (17) 13. Select the
41、bushing guide_bushing_left to be parameterized. 14. Point to the guide_ref_left marker to use as reference. 15. Select the Orientation Parameterization tool. Make sure to Collapse the angle. 16. Select the bushing guide_bushing_left to be parameterized. 17. Point to the guide_ref_left marker to use
42、as reference. 18. Now right-click on the guide_bushing_left and point to Modify. 19. Parameterize the bushing stiffness and damping values by using the previously created pvs_stiff_* and pvs_damp_* parameter variables. Do this by typing in the following information into the fields: Translational Sti
43、ffness: (pvs_stiff_x),(pvs_stiff_y),(pvs_stiff_z) Translational Damping: (pvs_damp_x),(pvs_damp_y),(pvs_damp_z) Rotational Stiffness: (pvs_stiff_tx),(pvs_stiff_ty),(pvs_stiff_tz) Rotational Damping: (pvs_damp_tx),(pvs_damp_ty),(pvs_damp_tz) 20. Make sure to set Force Display to None. 21. Select OK.
44、Adams Tracked Vehicle Toolkit Track Segment Customization Tutorial MSC Software Sweden AB 12 (17) Verify that everything was done correctly by looking through the guide_bushing_left element information: 1. Right-click on the guide_bushing_left and point to Info. 2. Enable the Verbose toggle button a
45、nd click Apply. 3. Verify that the I- and J-marker locations and orientations are parameterized correctly. The right-side bushing will now be created by copying the left-side one. When an element is copied, all the parametric information remain and modifications will be needed to move the copy to th
46、e right-side track segment. 1. Right-click on guide_bushing_left and point to Copy. Now there is a guide_bushing_left and a guide_bushing_left_2. 2. Rename guide_bushing_left_2 to guide_bushing_right. Move the I- and J-markers to the other side by renaming the markers. First the I-marker: 3. Right-c
47、lick on the bushing I-marker and point to Rename. 4. Change the part from txl_guide to txr_guide and change the marker name to bushing_i. 5. Select OK. 6. Right-click on the marker again and point to Modify. 7. In both the Location and the Orientation field change the reference to ._track_segment_gu
48、ide.tsr_track_seg.guide_ref_right. Adams Tracked Vehicle Toolkit Track Segment Customization Tutorial MSC Software Sweden AB 13 (17) 8. Select OK. Now the same procedure for the J-marker: 1. Right-click on the bushing J-marker and point to Rename. 2. Change the part from tsl_track_seg to tsr_track_s
49、eg and change the marker name to bushing_j. 3. Select OK. 4. Right-click on the marker again and point to Modify. 5. In both the Location and the Orientation field change the reference to ._track_segment_guide.tsr_track_seg.guide_ref_right. 6. Select OK. Note: Instead of moving the markers by renaming the bushing could have been modified and the Action Body and Reaction Body could have been changed from here. The same move would have been achieved (move the markers to belong to the right-side track segment and guide) but all location and orientation parameterization o
