Derrick Design---Need help!

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Anonymous Poster	Derrick Design---Need help! 06/28/2009 3:25 AM
	Hi well I am a mechanical engineer and unfortunatley i have to model a derrick similiar to one being used on oil rigs. Since its not my domain or i think its not i am seeking any direction relating to which software is the easiest for this purpose as i dont want to dwell into it too much because me and my friends want to focus on its vibrational and structural analysis using AnSys. Also if someone can advise me whether direct modelling on AnSys is better , but for that i dont kno exactly which element to use ,,, like solid or shell .. and whether using these elements will include all the effects similiar to it would if analysed using a 3D model. i will be gratuful to any advice or suggestion because i am hell behind schedule....... thanks take care bye
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nick name Guru Join Date: Mar 2007 Location: City of Light Posts: 3943 Good Answers: 183	#1 Re: Derrick Design---Need help! 06/28/2009 11:22 AM
	In general the derricks are structures build up from beams -either milled profiles or tubes- in all FEA programmes you can find "beam" elements but you should first define the geometry of the structure and get the basic data to define the beam elements. Send a readable sketch of the structure with the applied loads and you can get more input.
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chrisg288 Guru Join Date: Sep 2006 Location: Clive, Alberta, Canada Posts: 5916 Good Answers: 204	#2 Re: Derrick Design---Need help! 06/29/2009 3:54 AM
	I recommend that you contract a professional structural engineer. There is risk involved, and you want someone who can present a good case in court, when or if the structure fails, kills people, or shuts down a job site. Cover your own ass first. Chris
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Anonymous Poster	#3 Re: Derrick Design---Need help! 06/29/2009 4:37 AM
	Hi, I dont suppose you are producing this (oil & gas, Drilling Rig Derrick) for sale, or are you just producing this for other reasons? Thks Gordon
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ozzb Guru Join Date: Mar 2007 Location: Rosedale, Maryland USA Posts: 5197 Good Answers: 266	#4 Re: Derrick Design---Need help! 06/29/2009 7:07 AM
	Type derrick standard or jack knife? Is it to be a single, double, triple or quaduple? Maximum weight load of the drilling string? __________________ Life is not a journey to the grave with the intention of arriving in a pretty, pristine body but rather to come sliding in sideways, all used up and exclaiming, "Wow, what a ride!"
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Blink Guru Join Date: Aug 2006 Posts: 4484 Good Answers: 246	#5 Re: Derrick Design---Need help! 06/29/2009 12:35 PM
	I am a mechanical engineer and unfortunatley i have to model a derrick similiar to one being used on oil rigs. Since its not my domain... Doesn't this seem like a prescription for disaster? I'd suggest passing the project on to someone who is interested. If you are behind schedule and have little interest in the project, it is very unlikely that you will do a good job. Then... when someone gets hurt... what happens? __________________ There is more to life than just eating mice.
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