Recent content by Dell

i am working on a project for a dynamic sculpture we want the sculpture to be able to sway and our idea includes placing the sculpture on a floating base(almost like a catamaran) , with wind forces the sculpture will sway. i would like to know how i may model the water resistance/buoyancy...

my question is regarding calculation of deflection of a composite beam, ie a beam with a cross section made up of 2 separate homogeneous materials. the methods i know for calculating deflections in homogenous beams are energy methods(catiglianos 2nd) and the elatic curve equations(second...

it gives around 40 degrees

thanks, do these results seem at all probable or have i maybe processed the results incorrectly? i don't see where i could have made a mistake, yet i don't see any reason for there to be such errors in measurements, the entire experiment was done in a lab and all the readings were done...

i am a 3rd year engineering student currently a course in computer methods for structural analysis, as a part of the course we are learning about finite elemnts, we have learned about CST LST Q4 and Q8, but i am having difficulty deciding which element to use for different models. does anyone...

thanks jay, unfortunately i don't have another opportunity to use the lab before i have to hand my report in, so i won't be able to use a lower compressive value, as far as the density goes, the sand i used was 1.55 [g/cm2] the 3 results were as follows compression=0.75 ; shear=...

i am taking a geomechanics course, as a part of the course we are required to do labs, one of which is to test the shearing stress of a sand using the direct shear method. we repeated the experiment 3 times changing the compressive stress each time, 0.75, 1 and 2 kg/cm2 from each...

i am a 3rd year civil engineering student, currently taking a course in which i need to use finite element software for assignments. the course is 100% theory, and i need to learn how to use the software on my own, i am looking for FREE software with FE capabilities, and preferably one that...

so (y') would be the distance between the neutral axis (yc=440/7=62.857142857142861) and the centroid of the top shape (y=95) (y')= 95 - 440/7 = 225/7 = 32.142857142857146 Q=100*10*225/7= 225000/7 = 3.214285714285714e+004 which is what i had before, can you check this.

Jay, are you sure about that?? V, and the spacing c are not that important to me let them remain parameters. once i find the Q for the entire lower section (it will be 2*1.6=3.2 since q of the block is 0) how do i find the shear flow just through the nail- the Q=3.2 is the Q of the nail and the...

in a question i am asked to calculate the shearing force in a nail holding a cross section together, the cross section is showed in my diagram. my problem was that after calcultions i found that the centroid of the entire cross section was the same as the centroid of the secondary piece(the...

how so, that is my whole problem, if F=mg for example and F is Newtons m is Kg g=9.8 m/s2 then Newtons=Kg*9.8 why is this incorrect??

how do i convert a mass in kilograms to a weight in kgf?? should it not just be the same value?? is that not the idea of kgf?? for a weight on earth if F=mg---> N=kg*9.8 and i know that 9.8N=1kgf therefore 9.8N=9.82kg giving me 1kgf=9.82Kg this doesn't seem right to me...

Castigliano's method for calculating displacements is an application of his second theorem, which states: If the strain energy of a linearly elastic structure can be expressed as a function of generalised force Qi; then the partial derivative of the strain energy with respect to generalised...

o yes, that's correct, meant to be moment, but it still won't change the answer, im beginning to think that the way i expanded the cross section was incorrect, i just made the 2 horizontals 30 times longer ( to the right) maybe i was meant to expand them to both sides, 14.5 to each side...