CAE

An Introduction to the Femap Model Bounding Box

15 Jun, 2012 By: Alastair Robertson

Femap Tips and Tricks: What is the Femap Model Bounding Box, and why is it important?


Editor's Note: This tutorial courtesy of Siemens PLM.

The Femap Model Bounding Box is a hexahedral cuboid constructed from planes that bound the model in the x, y, and z axes. The longest diagonal of the model bounding box is used to determine certain default values in Femap.



For example, the default tolerance used when merging entities is calculated to be the bounding box diagonal divided by 10,000:


Merge tolerance = Diagonal / 10,000


Also, the default maximum deformation is calculated to be the bounding box diagonal multiplied by the applied scale factor and root 3, to average the edge length of the model bounding box:


Maximum deformation = Scale factor * Diagonal * √3


Watch the video of this Femap tip on YouTube.

About the Author: Alastair Robertson

Alastair Robertson

Add comment

Note: Comments are moderated and will appear live after approval by the site moderator.
AutoCAD Tips!

Lynn Allen

Autodesk Technical Evangelist Lynn Allen guides you through a different AutoCAD feature in every edition of her popular "Circles and Lines" tutorial series. For even more AutoCAD how-to, check out Lynn's quick tips in the Cadalyst Video Gallery. Subscribe to Cadalyst's Tips & Tricks Tuesdays free e-newsletter and we'll notify you every time a new video tip is available. All exclusively from Cadalyst!
Follow Lynn on Twitter Follow Lynn on Twitter

Latest News from Cadalyst Partners
Feed
AutoCAD 2013 Service Packs   17 May, 2013

Service Pack 2 for 2013 full AutoCAD and the LT version have been released. The links are below: AutoCAD 2013 SP2:...More>>Read more Without a Net blog posts>>

Feed
Teaching Old Designs New Tricks   17 May, 2013

Question: What do the QWERTY keyboard, the railroad, and shoelaces have in common? Answer: Their inventors are long gone. The QWERTY keyboard was...More>>Read more PTC Creo blog posts>>

Feed
Ideate - Ideate BIMLink for Revit 2014 now available   17 May, 2013

An update for my favorite Revit tool and most favorite Autodesk reseller. I miss you Bob! ...More>>Read more BIMbuilder blog posts>>

Feed
Discover and Fix Your Vibration Vulnerability with SolidWorks Simulation   17 May, 2013

When I go biking during the summer, I rely on the frame of my bicycle to withstand stresses such as vibration and impact. As I speed down the trail,...More>>Read more SolidWorks Blog posts>>

Feed
Behind the Design: How Words and Sketches Become a Picture Book   18 May, 2013

I bet, next to those dusty engineering and design textbooks on the shelf, you have a few picture books that have led to endless inspiration since you...More>>Read more SolidSmack blog posts>>

Poll
What type of input device (besides the keyboard) do you use at your primary CAD workstation?
Standard mouse
Trackball mouse
Programmable mouse
3D navigation device
Pen/tablet
Multiple devices
Submit Vote




Considering Wide Format Printing Solutions?
Four FREE White Papers Available:



Subscribe Cadalyst Newsletters