Inventor General Discussion

Inventor General Discussion

Reply
New Member
RichardAutodesk
Posts: 2
Registered: ‎09-25-2013
Message 1 of 2 (167 Views)

Drawing shells

167 Views, 1 Replies
09-27-2013 01:12 AM

I am new to the use of Inventor after having used several drawing and simulation packages. The company I have started to work for is using FEMAP for drawings and simulation of parts of ships. Inventor 2010 is also available. I am trying to work out if it is faster to draw in Inventor and simulate in either Inventor or FEMAP.

I am not looking for the midplane option, as this would imply having to first draw solids - in the simulation only (2D) shells are simulated. I do think the use of sheet metal in Invenotr is intended for other types of structures as well - please correct me if I'm wrong. In this case it involves plates of the deck, hull and perpendicular stiffeners - all modelled as 2D plates/shells. These plates are typically placed parallel or perpendicular.

 

The Inventor examples I have found so far involve solids. Can anyone point me in the right direction for drawing in shells directly?

I tried to draw a rectangle and extrude this with zero thickness. Extruding as a solid does not enable specifying a zero thickness (only values other than 0 are allowed). Extruding the rectangle as a surface extrudes each of the lines of the rectangle in the direction perpendicular to the drawing plane. This creates a hollow tube, with shells as walls. Extruding a line would give a plane, but I cannot select a line.

 

Many thanks in advance,

Richard

*Expert Elite*
swalton
Posts: 1,192
Registered: ‎06-19-2006
Message 2 of 2 (145 Views)

Re: Drawing shells

09-27-2013 04:49 AM in reply to: RichardAutodesk

IV will make surfaces as 0-thickness bodies.  You should be able to select a single line or a set of lines to make your surface.  Make sure that you select the surface option in the extrude command before you select your sketch geometry if you don't have a closed loop sketch. 

 

As I remember, the FEA solver in IV2010 only works with 3d solids.  It can't mesh surfaces.  I believe that IV 2013 introduced a midplane option for thin walled components.  The FEA included with IV is limited to linear homogeneous materials: No wood, composites, or plastic deformation.

 

You will need the Autodesk Simulation line of products if you want to mesh surfaces for FEA.




Inventor 2014
Vault Professional 2014
Announcements
Are you familiar with the Autodesk Expert Elites? The Expert Elite program is made up of customers that help other customers by sharing knowledge and exemplifying an engaging style of collaboration. To learn more, please visit our Expert Elite website.
Need installation help?

Start with some of our most frequented solutions or visit the Installation and Licensing Forum to get help installing your software.