Recent content by Pooty

Skwissgaar, I wonder what your professor would say about the principles behind virtual work? This theory is derived from using kinetic and potential energy. Kind of important theory for structural engineers.

Yes, nice observation, but as OldEngr63 pointed out, this is for small rotations. So sin(gamma) would approximately be gamma.

An attention to detail and the ability to check your calculations from a variety of perspectives. No detail is too small to overlook when it could quite possibly mean someone's life or millions of dollars of damage to a structure or expensive prototype. As far as checking your calculations...

Yes, it does not matter if it is out of water or in the water, it behaves the same way

I have an underwater microphone "hydrophone" that should run on 12vDC and 45mA. Except that when I run it off of my power supply, it is wanting to draw around 3Amps of current at the 12volts. The three power wires are (+, -, and shield) and are correspondingly connected to the power supply's...

I have been trying to find this on the internet but am having no luck. What do you guys think the coefficient of restitution for a baseball hitting a human beings body would be if the baseball were traveling at 100mph and the baseball player that it hit were stationary. I know it's hard to...

Thank you. I will be sure to do so. Do you know if there is an expiration date on that? I passed the exam 4 years ago. I didn't go back to grad school immediately. Would they still recognize this 4 years later?

So before I graduated with my BS in Civil Engineering I took the FE exam in Arizona and passed it. I then went out of state for my Masters in Civil Engineering. I am getting close to graduating and am looking to get a job. Do I need to retake the FE exam if I work outside of Arizona...

Yeah, same as Topher I've had problems when my mates are overdefined. Sometimes, rebuilding your assembly a few times to find the most efficient mating process really helps. I know this doesn't help very much but... You should show a picture of your assembly. I love SolidWorks and I'm always...

So I was wondering if I could get some help and advice on a project I am working on. I have next to no experience or knowledge of electrical circuits so I appreciate your patience. I am trying to power a structural health monitoring system "accelerometer" unit on a bridge using...

Does Poisson's Ratio only apply to material still in the linear elastic range or is it still true for the material that has undergone plastic deformation?

Fish4Fun, thank you for the info. I am checking out the website right now. I was kinda afraid that was going to be the case. Since this thing is supposed to be used in realistic environments where we aren't going to be getting such a huge flux in temperature gradients, would it be more...

I am not an electrical engineer and my understanding of electric circuits is very limited but I was needing to power a 4.5 volt accelerometer by use of a thermoelectric generator. Does anyone have any suggestions on where I can pick one up?

Pongo, Thanks. I got the symmetry to work out. I will have to look at the problem in the way you are talking about to see if that makes if visually easier. My problem is visualizing how the freebody reacts to imposed loads and displacements. NVN, The boundary conditions were set for me. It...

Pongo, Thank you! That is what I was thinking as well. And that is basically what I told my professor today. In civil engineering water is not a material we think of carrying structural loads. I was thinking about Naval Architecture, but any loads imposed on the water in that discipline can...