Recent content by devecseri

Sounds about right

Set to 0 sounds misleading because there is no reaction in the first place

If you have hinges free to rotate there are no moment reactions

Try to visualize what is going on in the specific situation rather than try to follow some set of rules. Sometimes in 2d problems one support is modeled as a roller to exclude a reaction in the horizontal direction, because certain problems have more unknowns than equations and you'd need to...

I've been told there are many, many different mechanisms for dna repair in our bodies

And smoke is floating around everywhere

What's really messed up is that tabacco is grown in apatite which basically absorbs radon from the ground which sticks to trichomes... smokers have way higher levels of polonium in their lungs.. i have a theory if you grew your own tobacco you'd be much less likely to get cancer

Yeah that thought occurred to me too, certain biological processes probably evolved to use it in one way or another, removing something that was present during the creation of life and all of evolution doesn't seem wise... everything in moderation haha

Yeah i just read that banana thing, stupid isotopes. Probably won't need to line suits with space blankets then

Found this, not stuff that my courses covered https://www.google.ca/url?sa=t&source=web&rct=j&url=http://web.mst.edu/~stutts/SupplementalNotes/EqivalentViscousDamping.pdf&ved=0ahUKEwjXs_DnnovMAhUBx4MKHcDoAUUQFggaMAA&usg=AFQjCNHEHkPb0oVbkkNaHH7GIKNbkPl2Sg&sig2=1CHSx3CHByZtiqR4qM00pA

Not sure how to factor dampers into a stiffness i feel like they would be ignored Only other thing i know to do is to write out the fbd of your masses and the middle section on the 2nd image, laplace transform the system equations and get the transfer functions but I'm not sure if that helps you

You add up and combine all of the spring energies taking into account springs in series act like resistors in parallel, then you factor out your x or theta if its rotational isolating the stiffnesses. Potential energy V=k(eq)*x^2 You'll end up with something like V=( terms with k )*x^2

You may want to look into potential energy methods

I don't know ansys and have never actually done an fea but I know you can set one up in MATLAB so maybe try to do a simplified fea in MATLAB to see if your answers get closer? That would only confirm your ansys isn't setup right, though, if you know 30 isn't right

Oh i see the graph better now, no this force would not excite a building's natural freq of 5-30 hz You can see even at 5hz you don't even have half a Newton so that's about 5 lbs pushing that building compared to like 30000 lbs i would assume that to be negligible unless its a particularly...