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?
Last edited by a moderator:
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 ..Instead of calculating it centimeter by centimeter, how can you get an "exact" solution?
The centimeter by centimeter calculation is not correct, but if you answer my questions it should give you an idea how the correct approach looks like.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 ..
Your equation for the strain is valid only if it is uniform from one end of the rod to the other. In this problem, because E varies with position along the rod, the strain is not uniform from one end to the other. So you need to figure out how to handle a problem in which the strain is varying with position along the rod.yes sir .tensile stress =P/A. and strain = dL/L. .by hookes law E=stress/strain giives dL= PL/AE
Several people have laid out an approach, but you need to come up with a way to use what they have said. We are not going to give you a formula that you can blindly plug numbers into.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.
Distance between successive cross sections after load is applied =## [x + Δx + u(x+Δx)]-[x + u(x)] = Δx + u(x+Δx) - u(x)##let original lenght be L ... but i have no idea how to find lenght btw consecutive section after load is applied.