2 Replies Latest reply on Aug 13, 2010 9:21 AM by Ryan Werner

Problems with static study of mobile crane

Bart Zuidhoek Aug 12, 2010 11:46 AM

Hi all,

I am currently working on a simulation study on a mobile crane. This for my thesis.

To simplify the model I have unnecessary elements such as the crane itself and engine + accessories removed from the analysis. Compounds such as welds and bolts and nuts are also not included in the simulation. These were replaced by rigid connections. Furthermore, all steps - joints were defined, the materials were introduced, and crushing forces were determined, ...

According to the program the mesh was ok. The problem arises in the study. After a waiting period of 20 hours (!) has shown a progress of 40% at "forming surface to surface bonding. I think this is only part of the overall study, which still stands at 0%. Now I wondered whether this is normal procedure.

How I can simplify the design?

Thanks

Re: Problems with static study of mobile crane

Michael Feeney Aug 12, 2010 6:51 PM (in response to Bart Zuidhoek)

What are you analyzing? Even when you remove the engine, accessories, etc....you still leave the reader guessing a lot. My assumption is you want to analyze the frame and you are running the simulation with solid elements. Can't answer too many questions until we see a picture of the model.
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Re: Problems with static study of mobile crane

Ryan Werner Aug 13, 2010 9:21 AM (in response to Bart Zuidhoek)

Adding a lot of connections can significantly slow down any analysis but I agree a picture would help to understand.

Ryan W.
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