5. Consider the periodie function of period T given by f(t) = (a) Sketch fo). (b) Expand ft) in a...
F Fosin t m k 2 Figure Qla: System is subjected to a periodic force excitation (a) Derive the equation of motion of the system (state the concepts you use) (b) Write the characteristic equation of the system [4 marks 12 marks (c) What is the category of differential equations does the characteristic equation [2 marks fall into? (d) Prove that the steady state amplitude of vibration of the system is Xk Fo 25 + 0 marks (e) Prove that...
Given the the mass-spring-damper system in Figure 3.10, assume that the contact forces are viscous friction. 1. State the number of degrees of freedom in the system. 2. Derive the equations of motion and state them in matrix notation. 3. If f(t) = a (a constant), what is the long term state of the system? 4. If the forcing is f(t) = A sin(ωt), and the system parameters are given in Table 3.1, simulate the response from rest. Plot all...
A periodic function ft) of period T-2 is defined as ft)-2t over the period (a) Sketch the function over the interval -3m<<3x. [3] (b) Find the cireular frequency a and the symmetry of the function (odd, even or neither). 21 (e) Determine the trigonometric Fourier coefficients for the function f) [10] (d) Write down its Fourier series for n=0, 1, 2, 3 where n is the harmonic number. [5] (e) Determine the Fourier series for the function g(t)-2r-1 over the...
2. (25%) Consider an undamped system subject to a rectangular pulse given by F(t) Fo for 0sts to and Ft) = 0 for t > to (a) Find the displacement response x() for 0ststo and t>to, respectively. (b) Find xmax for 0ststo and t> to, respectively. 2. (25%) Consider an undamped system subject to a rectangular pulse given by F(t) Fo for 0sts to and Ft) = 0 for t > to (a) Find the displacement response x() for 0ststo...
Q2. The following function f(t) is periodic with fundamental period To Sketch f(t) for at least 2 full cycles and obtain an expression for the Fourier series. Ensure that you calculate all coefficients and check your answer with the knowledge of odd or even functions. (0 – T. /251<-To 14, f(t) = {2A, - T./451< +T./4, 0, +T, / 4<t<+T72.
Question Help 9.1.13 The values of a period 2π function f(t) in one full period are given. Sketch several periods of its graph and find its Fourier series. f(t) = Sketch several periods of its graph. Choose the correct graph below A. frt) frt) f(U) -2x 2t -2 -2J 2x 2x Find its Fourier series. f(t) (Type a series using n as the index variable and 1 as the starting index, Type an exact answer, using π as needed. Use...
Problem 2.31: Please complete all of the following Problem 2.31: An underdamped mass-spring-dashpot system is subject to a periodic force F(t) of a period T and a saw-tooth form, as shown in Fig. P2.31. Assume ζ 0.1. AF(t) T" 2T 3T Figure P2.31 Periodic loading of saw-tooth shape (a) Obtain the Fourier series expansion for the force. (b) Find the Fourier series expansion of the system's steady-state response. (c) For T/T, = 0.5, where T, is the natural period of...
Consider the function f(t)= -r< t〈0, with fit (a) Sketch f(t) by hand for-3r 〈 t 〈 3T. (b) Determine the general Fourier Series for f(t) Consider the function f(t)= -r
The sketch of the following periodic function f (t) given in one period f(t) t2 -1, 0s t s 2 is given as follows f(t) 2 -1 We proceed as follows to find the Fourier series representation of f (t) (Note:Jt2 cos at dt = 2t as at + (a--)sina:Jt2 sin at dt = 2t sin at + sin at. Г t2 sin at dt-tsi. )cos at.) Please scroll to the bottom of page for END of question a) The...
4. Consider the periodic function given below: f(x)-x 0 ㄨㄑㄧ (i) State its fundamental period, and sketch the function for 3 periods. (5 marks) i) Find the Fourier series of the given periodic function, and expand the series to give the first three non-zero a and b terms (15 marks) ii) Use the answer obtained in Q4(ii) and the given periodic function, find the sum of the series 4(2n-1 )2 (5 marks)