Crank Beam End Load Calculation

[GradStructEng]

Hi All,

I need to calculate the forces for a Steel Cranked(Bent) Beam and was wondering if anyone knew of any good books that illustrate this well with example caluclations?

Even better; if anyone knows how I should go about doing this, would be very much appreciated. I've attached the CAD file for the drawing if this helps, and the connection in question is the top joint of the crank beam.

Many Thanks

 

[ToadJones]

dhengr-
I would take exception to your last comment, but you made the comment, so I rejected it out-of-hand.

 

[ToadJones]

Just kidding Dhengr, don't get all pissy on me and post a 13,000 word ranting dissertation

 

[BAretired]

hokie,
Thanks for clearing that up. I'm honored to be an ACC'er.

Toad,
I have a question for you. In fifty words or less, what is so great about IPA?

dhengr,
Please desist from referencing "BA's lower joint".

BA

 

[ToadJones]

IPA-
I like India Pale Ales because I like hops and beers that have a lot of hops. I find it a bit of an acquired taste. IPAs allows me to feel like I know as much as dhengr.

 

[BAretired]

dhengr,

"D and H" would have seemed arbitrary. I could have labelled them "1 and 2".

BA

 

[BAretired]

I wonder if the local liquor store carries India Pale Ale. I shall inquire tomorrow.

BA

 

[ToadJones]

Let the it be known to the court of dhengr that when Toad Jones, on the night of 29MAR11, at 23:53, said he was going to retire out of frustration, as he said, "cant even emoticon right.
I'm retiring.", he was indeed referring to retiring to his quarters to rest after having worked nearly 16 hrs that day in the office, in the field and including some travel.
Let the court also know that ToadJones has a penchant for self deprecation and may not be as green as dhengr is wise.

 

[BAretired]

Let the court know further that ToadJones has partaken of several IPA's and has retired for the night. See y'all in the morning.

BA

 

[csd72]

I have had extensive arguments on this with experienced engineers who simply just could not see it.

I think the reason why this is not normally a cause for failure is because most cranked beams are upsized for deflection and the web does restrain the inner portion of the flanges against this.

Anyway I am jealous that you guys over there have real hoppy IPA, over here in the country that invented them they have forgotten what one is and the IPAs are often the least hoppy of the lot.

Anyway have a Lagunitas Censored ale or IPA for me (but only for the brave!)

 

[ToadJones]

csd- Order all of the following:

Treogs- Nugget Nectar - maybe the best beer of all time IMO.
Sierra Nevada- Torpedo
Stone IPA
Stone Arrogant Bastard
Stone Double Bastard

Sam Adams Latitude 48 is actually a pretty damn good IPA
Of course, American IPA's are traditionally more hoppy than English and most of those listed above are Double IPAs

 

[a2mfk]

Toad- I knew you were an OK guy, with that beer list you surely cannot be too bad...

BA- Aren't you Canadian, and you don't like beer, huh? Well, my one Canadian friend doesn't drink it either, and man do we bust his chops about it. Since he drinks girl drinks instead that is...

You mean besides being a little taste of heaven, what's so good about IPAs? Some would say the higher alcohol percentage, but those comments are usually made by amateurs and college kids. They awaken your taste buds, are very hoppy (some may say floral) in flavor, and have a crisp finish. Compared to most beer they are a splash of cold water in your face, and definitely may be bitter to some. They go well with certain foods, especially ones with some spice, and go well with any weather and can be refreshing on a hot Florida day. They are not for everyone, definitely not the faint of heart. IPAs are a love or hate thing for most people.

The "pale" comes from pale malts used to brew it, and "India" from the fact this kind of beer was widely exported to the British Indian Colony. Now I have read several times the extra alcohol and hops were originally intended to help the beer survive its long journey from England to India, but wikipedia (FWIW) says this is a myth.

All this at 10am while I drink my coffee, maybe looking to the weekend a little to early. And I will wrap up beer talk before big brother puts an end to this non-engineering discussion.

Steel connections, oh yeah, steel connections.. Love those things. Cranked beams and stiffener plates because of the out of plane forces, got it....

 

[BAretired]

a2mfk,

I enjoy a cold beer on a hot day. Trouble is we don't get many hot days around here. What are girl drinks?

BA

 

[a2mfk]

My buddy is a man's man for the most part, but loves vanilla vodka and coke. Tastes like candy. In general, my man code goes drinks should have no more than 3 ingredients, no slices of fruit or umbrellas on the edge of the glass, and nothing pink-colored. Don't order top shelf scotch or bourbon if you are going to mix it with anything but a splash of water or tonic to bring out the flavor, otherwise that is a waste of money.

 

[ToadJones]

I think "man codes" are as fruity as the drinks they admonish.

I had a guy rip me a new one under the order of a "man code" for drinking Corona's w/ lime on the beach one day, telling me "no fruit in beer". The same guy was drinking a "Lite" beer. Ironic as hell I thought.
Miller Lite + Man Code = 3 dollar bill.

I will say that I agree that if you mix coke with a nice bourbon like Makers Mark or Beam Black Label, well, you're an idiot!
I also never understood mixing with water.

 

[dhengr]

BA...

I couldn’t open the OP’ers. sketch so I didn’t know what the picture was until you posted your sketch, which I didn’t think was all that anatomical, a free diagram of the body (FDB), I think Toad called it. That lower joint is sometimes called a knee, and that’s what I was referring to, it is not a cantilever, a wee-knee is a completely different member, not technically a joint. But, with your misunderstanding of my turn-of-phrase you certainly get a whole new meaning to the need for stiffeners and how to attach (weld?) them. I will probably never have occasion to use that exact phrase again, but I think you should maybe run a FEA on that member (I think that means female excitation & anticipation). Your von Mises stress level may be kinda high and confusing, but you will ultimately yield. Then if you are still hard up for something to do, Google “The Stress Analysis of a Strapless Evening Gown,” it’s a funny read, and some of the same principles might be applied to your current problem.

Now, I’m going back to working on my 13,000 word harangue about and for new patent holders.

 

[a2mfk]

Toad- beer is not a girl drink, I meant fru-fru mixed cocktails, you know the ones...

A lime in your corona, an orange with your Hoegaarden, etc. to me are quite acceptable, that is just garnish, and can bring out the flavor in belgium whites and wheat beers. Frankly, there is no way I can drink that crap Corona without one, go ahead, try it sometime. Anyone talking trash about beer, whilst drinking a mass produced American beer, needs a smack.

During the summer here in Florida its always in the 90s and very humid, so if I'm doing yardwork or on a kayak trip or chilling at the beach, I go very light and cheap (yep, head for the mountains of Busch) and have even put it on ice with a lime (its about hydration too). And I'm a beer snob for the most part. My wife does make fun of that concoction though, probably because I also will put a shot of tequila in there on occasion. My yardwork output starts to tail off as the day progresses I admit...

OK, seriously, I have to stop this whole discussion. Sorry structural engineering message board guys for being so off topic. Plus I have actual work to do, but its much more fun to day dream about beer on the beach...

 

[BAretired]

Personally, I think all of you guys need more to do. I'm glad I'm not paying your salaries.

BA

 

[a2mfk]

BA, rest easy, I type fast and don't bill for this crap...

 

[ToadJones]

There are times I wish someone paid my salary

 

[a2mfk]

We should pull a salary for our awesome contributions to this forum