LISA - Finite Element Technologies
Sonnenhof Holdings

3757 Woodruff Cres.
Mississauga Ontario L4T 1T8
Canada

"FREE LISA 6.1.2 DOWNLOAD, 1300 node limit !"

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Contact Support

LISA Users including those currently evaluating the product can receive assistance by way of -

Email :

Voicemail: (1) 416 841 3378

 


CAD models
LISA does not have a CAD kernel like Parasolid or ACIS to recognize CAD entities like solids & surfaces, so you will not be able to import your CAD models into LISA. You will need to re-create your part using LISA's modelling tools.

DXF import
DXF import is possible but it's use is deprecated because it requires quite an effort to prepare the file in a form that is understood by LISA, it's much quicker to re-create the model within LISA itself. But, if you're really determined to use DXF here's some additional information.

Most DXF formats should work correctly, but a few programs like SolidEdge customize their DXF file format. In such cases, the DXF import file does not work with LISA.

A free 2D CAD program that has been successfully tested with LISA is CADVANCE by F.I.T. Inc,. This used to be a commercial product uptill 1995 but now they have generously made it available to the public for download via the internet. To download the program please
click here !

While working with CADVANCE please note the following points:

i. When writing any Text, use the "CAD" option and not the "True Text"

ii. After exporting the DXF file use a simple text editor like Notepad to check the file. CADVANCE tends to save a layer name specified as for e.g. LISA.NN as LISA_NN__2. Using the text editor change it back to what it's supposed to be viz. LISA.NN. Do same for all the named layers, e.g LISA.NET, LISA.EIO etc.

iii. When specifying the node points, e.g. P 1, P 2 etc use a space between P and the number e.g. P 1 not P1.

 

Correct Element Topology
This concept is extremely critical to working with LISA. When creating elements manually by specifying node numbers (or selecting nodes using the mouse), ALWAYS go counter-clockwise starting at the lower left corner and working your way around counter-clockwise. In-correct element topology will create a mesh that will not solve, for more information please refer to Appendix-C in the LISA User's Manual.

Free 1300 node limit license
The free 1300 node licenses are automatically registered with the program installation. For existing customers, upgrading to the latest version of LISA, their current LISA licenses will not be over-written by the new install.

Importing AutoCAD drawings
You can lay-out a coarse mesh in AutoCAD and import it into LISA using the AutoLISP files provided
here!

Download problems
In the event that you are unable to download the software completely, it could be because the server is slow. If this is the case please try downloading the software at another time and it will download alright.

LISA User's Manual
If you are unable to view the LISA User's Manual, go to the start-up screen (the window that is first displayed when you start LISA). Click the button with the arrow. Select the last item "Unzip Manual" on the pop-up menu, and allow it to install to where LISA was installed (usualy c:\program files\lisa). Now you should be able to view the manual.

 

 

   

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