Recent content by theBEAST

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    Trying to model the acceleration of a system due to an impulse forcing function

    Anyone know?
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    Trying to model the acceleration of a system due to an impulse forcing function

    Homework Statement My team and I are working on a design project to design/modify a device that can go on hikes for paraplegic/quadriplegic people. Here is the current design (not designed by us): http://i.imgur.com/RAOq28k.png http://i.imgur.com/zgA3aCg.png We are thinking of adding a...
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    Equivalent spring constant of a system

    Homework Statement and the attempt at a solution[/B] I tried to find the equivalent sprint constant using two points of equivalence. The first is with respect to theta. The second is with respect to the datum x as shown in the images below. The two methods yield two different answers which is...
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    Linearization of non linear systems

    Homework Statement In my dynamics modelling class, the professor went over an example where we linearize non linear state equations to approximate the behavior. In this case, we are not given an operating point. However, the professor said you can solve for the operating point by setting x' =...
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    Maximum allowable length for a column under a load (buckling question)

    Sweet, but what small typo are you referring to? PS: this is from the solution manual
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    Maximum allowable length for a column under a load (buckling question)

    Homework Statement Here is the problem with the solution: I feel like the solution should be 10.74m. The maximum allowable length should be the lower one. This is because, for example, if we make the column 11m in length. The Pcr in the zy plane would decrease and since we are applying...
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    Strain energy in a tapered rod under torsion

    last bump.
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    Minimum capacity rate ratio of a heat exchanger

    Homework Statement Here is the question: I am confused about the solution. In the solution they found that the minimum capacity rate ratio R = C_min/C_max was zero. This is because of the term I circled in the red which I do not understand why it goes towards infinity. Here is the solution...
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    Strain energy in a tapered rod under torsion

    bump.
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    MECH 360 - Question about strain energy problem with beams

    But is the integral I circled in red correct, is my method correct?
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    MECH 360 - Question about strain energy problem with beams

    So I did it with Macaulay Equations and got the same answer:
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    MECH 360 - Question about strain energy problem with beams

    Hmmm, I went over my moment balance equation several times and got the same equations, then I plugged in x = a and got the values... I feel like I am doing something really dumb and I can't seem to figure out what.
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    MECH 360 - Question about strain energy problem with beams

    Hmmm, so I drew it out and I get this: I guess it makes sense since there is a moment in the beam so we should expect a discontinuity so I am not sure where my mistake is still :(.
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    Strain energy in a tapered rod under torsion

    Oops, sorry, I have posted my solution.
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    Strain energy in a tapered rod under torsion

    Homework Statement The Attempt at a Solution http://imgur.com/3ZfjPxM.png So if you look at my attempt, I integrated the strain energy density function and at the end everything cancels out. Does anyone know what I did wrong?