I have an assembly with a large number of parts with contacts. I am solving for a pressure load. I get a max to min coeff. ratio that is very large. My model never converges. I suspect it is due to rigid body motion. I have carried out a modal analysis of the assembly and sub-assemblies and no...
What do you mean by modeling a plastic hinge? It seems that a plastic hinge occurs when the section has yielded through. In which case it can not support any load. What do you really want to do?
Gurmeet
Time is an illusion. Now is the only thing there is.
LPF stands for load proportionality factor. It is a multiplier applied to the applied load. Arc length method is used for RIKS analysis to calculate the response, when the system is undergoing an unstable response (past the point of buckling). Topic Arc length method is too complicated to...
Erga,
Your problem is that you have not got mesh convergence. Radius you have added is really small. In order to get a realistic stress number you need to put at least approx. 3 elements through the radius. Better way is to keep reducing your mesh size till you get convergence (till your results...
You can buy more processors (4-8), but please keep in mind that you will have to pay extra for the software in order to use the extra processors. I would go for 32 GB memory, as it will allow you to run larger models in core.
Gurmeet
Gurmeet
Time is an illusion. Now is the only thing there is.
I am a PE in Ohio. I am trying to find out what I need to do to be certified in California. Any help will be appreciated.
Thanks,
Gurmeet
Time is an illusion. Now is the only thing there is.
I think that the basis for size factor is rather shaky. If one was dealing with a part with no stress concentrations, the size factor may make some sense, as RB957 pointed out. But all real parts have stress concentrations. The fatigue failure really occurs at these locations. Therefore...
Very interesting discussion. A centrifugal pump/compressor has a shut off condition; impeller is turning yet there is no flow. In a positive displacement pump/compressor you can not move the piston and not have flow (an external control mechanism; unloader etc. is needed to change this)...
Mdossaji,
Here is my public profile on linkedin:
http://www.linkedin.com/pub/gurmeet-cheema/10/b8/847
Gurmeet
Gurmeet
Time is an illusion. Now is the only thing there is.
ESPcomposites, I accept your point. The word 'inexpensive' was a wrong choice. I should have said 'less expensive'. To answer your question about my background, I have an MS degree in mechanical engineering and I have a PEs license. I have lot of experience in design, R & D and testing. So what...
This design seems a little unusual. All the compressors that I have seen have some form of oil lubrication in the frame. For low hp compressors the lubrication is splash with a dipstick mounted on the connecting rod. Higher hp machines usually have a force fed lubrication (with sleeve type...
Gentlemen,
Thanks for providing so much information. I apologize for not responding earlier. IDS already mentioned what I am going to say. I was not looking for free software. I do not want to spend a lot of extra time trying to pre-process, run or post-process the results as I want to do this...
