Recent content by praveenpandiyan

  1. praveenpandiyan

    Extension of rod -- help please

    yea h .yeah ,.. im seeing it ,anyway thanks
  2. praveenpandiyan

    Extension of rod -- help please

    i didnot mean that way. i value you all. but i was in a hurry,, needed aproach or formula that i miss.exams coming up.
  3. praveenpandiyan

    Extension of rod -- help please

    let original lenght be L ... but i have no idea how to find lenght btw consecutive section after load is applied.
  4. praveenpandiyan

    Extension of rod -- help please

    only problem im facing is its E value .. at dx E= E1-((E2-E2)/L)*x .im bit confused.
  5. praveenpandiyan

    Extension of rod -- help please

    well then the material vary at every point (as u said).. so i need to find extension at given small dx. and integrate from 0 to L . is that right
  6. praveenpandiyan

    Extension of rod -- help please

    yes sir .tensile stress =P/A. and strain = dL/L. .by hookes law E=stress/strain giives dL= PL/AE
  7. praveenpandiyan

    Extension of rod -- help please

    centimeter by centimeter?. well threre must be some other way, like its going to be triangular profile with one end E1 and other end E2.. is that possible to find equivalent E acting on rod ..
  8. praveenpandiyan

    Extension of rod -- help please

    Homework Statement see attachement Homework Equations dl= PL/AE The Attempt at a Solution as you see here my youngs modulus E varies linearly. i doubt that adding up E1 &E2 wld give solution.. any help?
  9. praveenpandiyan

    Airys stress function -- structures

    i found other boundary condition too ..beam shear stess (tou)xy=o at y=(-h &=+h)..thanks anyway ..
  10. praveenpandiyan

    Airys stress function -- structures

    Homework Statement For (fi)= (b/6) x*y3 +C*xy show that simply supported beam of 2L loaded concentrated load at mid span.,the stress function satisfy loading condition is (fi) .treat concentrated load as shear stress suitably distributed to shoot this function. so that intergtal of limit (h to...
  11. praveenpandiyan

    Harmonic function. vibration

    thanks Nas .. i got the solution...sinusoids having frequencies in integer multiple of (f) have net freq (f) when addded together..when i consider by t=1/f ..its pretty clear final net freq occur only after first signal ..so answer is P
  12. praveenpandiyan

    Calculate the Young's modulus

    well. i think bulk modulus =direct stress/ vol strain .here pr stress
  13. praveenpandiyan

    Harmonic function. vibration

    resultant frequency X=p. Any IDEA how they got it
  14. praveenpandiyan

    Harmonic function. vibration

    yes sir but I dont hv known limits in Grapically ..only freq . so by trignometricaL relation i tried it( as u said) ..with sin A+sinB=(1/2)*sin((1/2)(A+b))*Cos((1/2)(A-B)). . i get in the form sin*cos+Sin(C) AND no use of sin A*cosB.. how to proceed here
  15. praveenpandiyan

    Moments Help

    yes . take moment about A. consider moment contribution at C ...both X and Y.. u need vertical distance of load that act from base.. that would be 1 . so thats it
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