Recent content by spanky489

at my university it was probably machine elements, not because its hard to understand or anything but because u needed to know all the equations for every mechanical component invented.

im pretty sure all 3d programs mentioned in this thread are enough to model the actual transformer but you should definitely keep an eye out for the 3d programs that are compatible with the CAM and CAE programs for your field.

p\cdot V^{n}=p_0\cdot V^n_0=constant \\ \frac{p}{p_0}=(\frac{V_0}{V})^n \\ F(s) --> \int_{0}^{F} dF = A \cdot \int_{p0}^{p} dp \\ F=A\cdot p_0 (\frac{p}{p_0}-1) \\ F(s)=A\cdot p_0\cdot ((\frac{h}{h-s})^n -1) \\ c(s)=\frac{dF}{ds} = \frac{A\cdot dp}{ds}=\frac{A^2\cdot dp}{dV} with some more...

deflection is a function of f(E,I,M) your best shot would be to increase the moment of inertia by choosing between different types of beams that suit your need.

when i was a intern at bosch siemens i strictly had to use UNIGRAPHICS aka UG, which is the corporations normalized CAD software. Otherwise most companies tend to use solidworks, catia, pro-engineer etc... these days there are a ton of options and you can't really say which one is the "best"...

you should probably be looking for something made out of NBR rubber and exclusively for rotary shafts (o-rings are usually for static elements). I suggest you take a look at the simmerings on simrits online catalog http://intl.simrit.de/web/public/products/eCatalog Now from all those options...

take a steel profile, put a bucket on top and gradually fill it with water, given that with every phase you measure the bendage variables.

lol you forgot to add that most of them died while testing them xD

not sure what type of ball bearings are used in lathes but I am thinking radial, which means that they permit radial loads and a little bit of axial. then another good thing is that they are cheaper to produce than roller bearings(which don't tolerate axial loads). now I am guessing that the...

if you want to calculate the torque for half of the rod use the formula bob s gave you and take half of the length, which is your variable r if i understand correctly. so \frac{r}{2} and when you insert it into the formula it should be (\frac{r}{2})^3 = \frac{r^3}{8}

mass flux stays the same, so you can calculate the 2nd speed with \dot{V} = A_{1} \cdot v_{1}= A_{2} \cdot v_{2}

i can say from the back of my head that you will need at least 3 things: module, # of teeth and a diameter, which the name i do not know in english but looking at a picture on wikipedia its either a pitch or base diameter, one of those 2.

the torque on the edge of your shaft is T=F*r , where F is the force transmitted through various mechanical mates unless your shaft is coming out of the power source directly. r is the radius=d/2. Power of your torque is P=T*w where w is the angular velocity like mech_engineer said. Now in...

Lienhard IV J.H., Lienhard V J.H., A Heat Transfer Textbook,Third Edition, Phlogison Press, Cambridge, Massachusetts, 2003. (obtainable for free on the net) Baehr H.D., Stephan K., Wärme und Stoffübertragung, Springer Verlag, Berlin, Heidelberg, 1994. Heat and Mass Transfer, Springer Verlag...

bernoulli's equation(which is in fact posted in the pdf our colleague posted up higher), i just handed in my lab report last week on this topic. of course some parameters must be known in order to calculate the losses in bends. so basically this is what bernoullis equation looks like...