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JAG Engineering LLC last won the day on June 21 2017
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About JAG Engineering LLC

Rank
Member
Profile Information

Gender
Male

Location
Wyoming

Present Company
JAG Engineering, LLC

Designation / Job Title
President

Highest Qualification
MSME

Year of completition
1989

Engineering Qualification
BSME

Year of completition
1977

Name of Institute
Pratt Institute & U of Santa Clara
Contact Methods

Website URL
www.jagengrg.com

Facebook URL
https://www.facebook.com/JAGEngineeringLLC592696604082686/?ref=hl

Linkedin URL
https://www.linkedin.com/profile/view?id=AAIAAADCPGMB84uDvtCZwSdU21I5TPkFMoUnOw&trk=nav_responsive_tab_profile_pic
More Information

Project Undertaken
http://www.jagengrg.com/structures.html
Recent Profile Visitors

JAG Engineering LLC reacted to an answer to a question: hlp 250 + Itm packer machine

The word, exact, pretty much answers your question, NO! Exact implies Zero tolerance. Such a thing is not possible. Even if by chance you ended in the exact same spot how would know, how would you measure it? The best instruments will have a tolerance, with in 1/100, 1/1000, 1/10000000000000 ? close enough for any application i can think of, but not exact. A train stopping within a few inches, should be fine. Good trains drivers do this thousands of times per day in NYC subways.

JAG Engineering LLC reacted to a post in a topic: STOP on Track

Struggling with a worm gear analysis
JAG Engineering LLC replied to edave's topic in Machine Dynamics & Design Considerations
Sam, Scroll to last photo I sent. 
Struggling with a worm gear analysis
JAG Engineering LLC replied to edave's topic in Machine Dynamics & Design Considerations
Take a guess!. I am only 1/2 kidding. I did a school project so my memory is stretching back 40 + years. There are many possible solutions. Pick values and see what you get. If there is some limiting input factors given, and when you reach that point working backwards, you don't meet the requirement, select different values. Set up an Excel spreadsheet so you can do quick what if's to better see the effect of changing one parameter or value at a time. I still refer to the text I used back then. The original publication date was 1934. My 4th ed is from 1965. I don't know how this compares 
Many handbooks will provide the formulas for the moment at any point for one or two loads applied at any point(s). Knowing the moment M at any point, Stress = Mc/I. Set up a spreadsheet if you are searching for some sweet spot combination of max load vs location. I assume when 10 lb was added to the 90 the beam collapsed. Not knowing any more about the situation at hand I will stop here. If this a real world application vs a lab demonstration for a class there is much more to consider.Good luck.

The new hard drives may have lost my automatic log in but I am in again. When I use any source I work through any example provided in step by step detail. If steps were skipped in the example, you may not notice the 2 in r/2 may have been dropped, just to mention one of many easy errors. I recall a professor who must have done the example in class countless times. He wrote 3x3 and came up with 12. Not that he did not know how to multiple, 12 was the incorrect answer, he just wrote down the wrong input but knew what the answer was. Proof readers can make the same error focusing on the

Looks like I may have gotten it

I have analyzed trusses for class work, but never in professional practice. In homework I am given the geometry and the applied loads, and asked to find the loads or stresses in members, not too difficult. But coming from a blank paper where do you start to design a truss or bridge, with so many types to pick from? For a simple beam I know what to do. For a complex truss, vs suspension bridge how is this decided before all the detail analysis starts? In the attached photo the bridge over the RR tracks (right side) is a truss. Over the road way a different type. I assume the RR needs more clea

Deflection of a pole with end load and UDL
JAG Engineering LLC replied to Erin HaywardLang's question in Question & Answers
The main point you are asking is can the results from different loading be added. For a static analysis, yes. Just think about applying a load at the tip and using the correct equation you will get a deflection. If you have doubled the load it would deflect twice as much. If you applied two loads each equal to the first load you would have the same deflection as a single load of twice the first. There are many reference books that will provide the equations for beams. A pole in this case is a vertical beam. Cantilever is the type of beam. As far as the taper, it could make a difference. The fo 
tomcro 2015 reacted to a post in a topic: Flywheel and DC motor

Solution for attaching bicycle brake pads
JAG Engineering LLC replied to Zane's question in Question & Answers
First let's be clear about 6MM Is this the distance across the flats or the nominal diameter of the threaded section? 
GabeRM reacted to an answer to a question: Pendulum Hammer Impact Force Calculation

Pendulum Hammer Impact Force Calculation
JAG Engineering LLC replied to GabeRM's question in Question & Answers
Dr D can likely tell you what to do off the top of his head. (TOLD YOU SO, JUST SAW DR D's REPLY) I would need to refresh myself on this. Conservation of momentum may be the best approach. Now that we know the anvil can move, (anvils as used by a blacksmith don't), the g question makes sense but still many issues. If the hammer is one ounce and the anvil a ton, the anvil will not move for all practical applications. Switch the weight values and the anvil will take off like a rocket. Make either out of a compliant material and the answer will once again be different. You will need to know 
GabeRM reacted to an answer to a question: Pendulum Hammer Impact Force Calculation

Pendulum Hammer Impact Force Calculation
JAG Engineering LLC replied to GabeRM's question in Question & Answers
The anvil is supported, but not fixed in the vertical direction? So when it is struck it will be propelled up? 
JAG Engineering LLC reacted to an answer to a question: Pendulum Hammer Impact Force Calculation

is this formula ok?
JAG Engineering LLC replied to PabLo Dal Buoni's topic in Machine Dynamics & Design Considerations
I know what you mean but that is not what I have discovered for shear strength of concrete. http://people.tamu.edu/~mhaque/cosc421/SHEAR.PDF Also attached a posted question with answers. One reply suggested the same as you. If there ever was a dimensional constant, it has been lost in time and the odd units accepted. If you have a better source I would like to see it. I was sure there was an error but found the same relationship in a few sources. Then the replies from CE's. What's up with the units in concrete design equations_ _ AskEngineers.pdf 
is this formula ok?
JAG Engineering LLC replied to PabLo Dal Buoni's topic in Machine Dynamics & Design Considerations
Dr D., For most equations if the units don't work there is an error. This is not true all the time. The strength of concrete is where I ran into this. It is because the results are arrived at empirically. I looked at several sources all had the same equation. Finally I came across a post or a book, I can't recall, that explained why. I forget if the results was allowable force or a stress. But the square root of psi does not get you to either. I get to work what are Civil projects. I find the phraseology puzzling at times. Like "the beam developing its full strength due to the load." Th 
ndems reacted to an answer to a question: Solicitors assessing/adjudicating mechanical engineering disputes

Solicitors assessing/adjudicating mechanical engineering disputes
JAG Engineering LLC replied to ndems's question in Question & Answers
Dr D. Pit bulls are some of the gentlest dogs unless they are trained otherwise. A lawyer like a politician only cares, or must force themselves to only care, about winning. How much is training, and how much is evil by their nature is impossible to determine.They present a set of information (I hesitate to use facts). The presented information is turned over to a third party judge/jury who come to a decision based on two or more biased and incomplete sets of information. I have sat in court knowing the full story and listening to what was presented which then becomes the only "truth