msmac3D Now Uses Vehicle Shape, Not Rectangles

General questions on the SMAC, msmac3D and other Collision Simulation programs
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MSI
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msmac3D Now Uses Vehicle Shape, Not Rectangles

Post by MSI »

Some SMAC users have encountered issues with the original SMAC definition of rectangular vehicles.
Particularly In low speed impacts.
  • While SMAC has decades of proven validation and correlation with real world crashes using the rectangular definition of the vehicle,
  • The timing of initial contact can be an issue to explain (forces before the rounded corners touch!).
In response
  • McHenry Software has modified msmac3D (on option choice) use the actual vehicle shape of each vehicle for contact detection.
The updates will be delivered to all msmac3D licenses shortly with many additional enhancements, etc.
stay tuned!


With a rectangle representation, the vehicles detect contact at 0.024 seconds early and the DeltaVs are only slightly changed:
deltaV comparison.png
deltaV comparison.png (20.87 KiB) Viewed 99 times
figure below: comparison of old vs polygon definition, note the magenta rectangle is for comparison
rectangle v vehicle shape.png
rectangle v vehicle shape.png (630.25 KiB) Viewed 99 times
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MSI
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Posts: 1676
Joined: Thu Jun 18, 2009 12:37 pm

Re: msmac3D Now Uses Vehicle Shape, Not Rectangles

Post by MSI »

Here's a better video display of the new msmac3D shapes
NOTE: the below graphics have a dashed white line vehicle outline display which is optional and for illustration purposes only
NEW!! LEASE pricing of msmac3D Software!!
FOR MORE TOPICS see:Forum Index & McHenrySoftware.com
Question? Comment? Please email us (all communications considered confidential)
(c)McHenry Software, Inc ALL Rights Reserved.
MSI
Site Admin
Posts: 1676
Joined: Thu Jun 18, 2009 12:37 pm

Re: msmac3D Now Uses Vehicle Shape, Not Rectangles

Post by MSI »

HOWTO Video with links to specific tasks now uploaded here:
NEW!! LEASE pricing of msmac3D Software!!
FOR MORE TOPICS see:Forum Index & McHenrySoftware.com
Question? Comment? Please email us (all communications considered confidential)
(c)McHenry Software, Inc ALL Rights Reserved.
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