SolSec3.6 - 3- 39 Problems and Solutions Section 3.6 (3.37...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
3- 39 Problems and Solutions Section 3.6 (3.37 through 3.38) 3.37 A power line pole with a transformer is modeled by mx kx y ˙˙ += where x and y are as indicated in Figure 3.23. Calculate the response of the relative displacement ( x – y ) if the pole is subject to an earthquake base excitation of (assume the initial conditions are zero) yt A t t tt () = ≤≤ > 10 2 02 0 0 0 ;; ; m effective mass k effective stiffness x ( t ) y ( t ) Solution: Given: y kx x m & & & & = + ˙ y A t t xx = > () = () = 2 00 0 0 0 0 The response x ( t ) is given by Eq. (3.12) as xt F ht d t () = () − () 0 ττ τ where ht m t n n =− ω ωτ 1 sin for an undamped system For , 2 0 0 t t
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
3- 40 xt A tm td A m t tt n n t nn () =− + 1 1 1 1 0 0 2 00 τ ω ωτ ωω sin sin cos For t >2 t 0 , A A mt t t t t n n t n n −− 1 1 1 22 0 0 2 2 0 0 sin sin sin cos
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 3

SolSec3.6 - 3- 39 Problems and Solutions Section 3.6 (3.37...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online