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I would like to undertake an FEA of a large-span culvert with heavy loads. The culvert material is relatively heavy gage 6"x2" corrugated steel. I have used CANDE89 for 2D plane-strain solutions, but the DOS-based program input and output has become very cumbersome. I have been utilizing...

I have been searching for CandeCAD. The web site seems to have changed. I am trying to determine current availability of the software and how it integrates with AutoCAD.

Tom & Lothar, I have found that my problem with the copy and paste technique is with PhotoShop 7.0, the application I view TIFF files in. I can copy & paste when using MS Image, although the image is quite pixelated. I find that !Slingshot from drcauto works the best. The image quality is...

Exxit: I have tried the CADforum tip for opening the image manager in ACAD LT2000. Apparently the only thing it provides is the ability to view raster images placed in a file by the full version of AutoCAD. Stiil looking for a way to import a raster file into AutoCAD LT (98 or 2000). Thanks...

Thanks all for the suggestions. CADFORUM was helpful, but their tips are for AutoCAD LT 2000 up. It's a pretty slick way to extract hidden additional functionality from LT! I have tried to copy and paste from PhotoShop to ACAD with no success. It may be a problem with the way PS handles...

I have AutoCAD LT98. I would like to bring a TIF file into ACAD so that I can create a vector drawing over the raster image, then delete the raster image. Can this be done? I can only find an import for DXF and WMF files. I tried to create a WMF file in PhotoShop 7.0, but no luck. Any...

Thanks for the reference to CandeCAD. I am going to check it out. Looks promising. Thanks. Barry

Dr. Lucarelli, The CANDE-89 executable and source code can be readily obtained from McTrans for $5 each. The user's manual is hard copy and costs $20, postpaid in the US. The code would be a challenge without the user's manual. The program worked well for me once I learned the data...

I would question someone's criticism of a well-known product like Algor. I have used it since the DOS days and always found it to be reliable. The DOS linear version was based on the well-known SAP IV program introduced years ago by Ed Wilson at UCB. I heard rumors that this code sometimes...

I would second the recommendation of Algor (www.algor.com). You should be able to get the Professional Linear Elastic Static Modeler for about $2500. You may need to dicker to get the lower price as I believe that it lists at $5000. This will give you way more linear elastic static modeling...

As mentioned by other posters, you can connect a beam element node to a shell element node. If you connect to only one node on the shell element, however, you will introduce a significant stress concentration at that node. A better way to model is to determine what DOFs you want to transfer...

I have a problem concerning very heavily loaded pipe-arch culverts under which normal assumptions appear rather conservative. This is based upon comments from a researcher who tested large span culverts with shallow cover. He related a test on a 24 ft span culvert with 16" cover supporting...

I am attempting to model corrugated steel pipe-arches with the CANDE soil-structure interaction program. It appears straightforward to use the program (except for actual data determination of non-linear soil element properties), but the CANDE-89 users manual that I have refers to FHWA reports...