Obtain the number of significant modes, Mathematics

Assignment Help:

On the Assessment page for the module Moodle site you will find five frequency response functions for the frequency range 20 to 100 Hz in the EXCEL spreadsheet "FRF_Data". These are receptances excited by a shaker placed at Position 1 on a front sub-frame mounted across the body of a car.

The five positions are equi-distant across the sub-frame. Both the excitation and the responses were in the vertical direction with "up" considered positive. The magnitudes are in mm/N and the phases are in degrees. The phases are defined such that a lead angle is positive. The phases are in the range -180 to 180 degrees.

(i) You are to conduct a modal analysis on this data to obtain:

(a) The number of significant modes of vibration in the frequency range and estimates of their natural frequencies.

(b) Estimates of the mode shapes for the five positions for each of the modes. You should normalise these on Position 1.

(ii) Comment on each of the modes of vibration.

 

 


Related Discussions:- Obtain the number of significant modes

12, Ask question #Minimum 100 words accepted linear algebra

Ask question #Minimum 100 words accepted linear algebra

I-phones in one year, Assume company A expects to enhance unit sales of i-p...

Assume company A expects to enhance unit sales of i-phone by 15% per year for the next 5 years. If you presently sell 3 million i-phones in one year, how many phones do you expect

Geometry, RS=8y+4 ST=4y+8 RT=15y-9 a.) WHAT IS THE VALUE OF y b.) FIND RS...

RS=8y+4 ST=4y+8 RT=15y-9 a.) WHAT IS THE VALUE OF y b.) FIND RS, ST, AND RT

Find the ratio of line segment, Find the ratio in which the line segment jo...

Find the ratio in which the line segment joining A(6,5) and B(4,-3) is divided by the line y=2           (Ans:3:5) Ans :   Let the ratio be k:1 x = 4 k + 6/ k +1 y

Rules for inequalities, Here we look at only the rules without going ...

Here we look at only the rules without going into their proofs. They are: a  0. If a If a If a

Bob is 2 years from being double as old as ellen, Bob is 2 years from being...

Bob is 2 years from being double as old as Ellen. The sum of twice Bob's age and three times Ellen's age is 66. How old is Ellen? Let x = Ellen's age and let y = Bob's age. Sin

Algebra ii, How do you graph a hyperbola?

How do you graph a hyperbola?

Find out the length of the parametric curve, Find out the length of the par...

Find out the length of the parametric curve illustrated by the following parametric equations. x = 3sin (t) y = 3 cos (t) 0 ≤ t ≤ 2? Solution We make out that thi

Probability, TWO PERSONS A AND B AGREE TO MEET AT A PLACE BTWEEN 11 TO 12 N...

TWO PERSONS A AND B AGREE TO MEET AT A PLACE BTWEEN 11 TO 12 NOON.  THE FIRST ONE TOARRIVE WAITS FOR 20 MIN AND THEN LEAVE. IF THE TIME OF THIR ARRIVAL BE INDEPENDET AND AT RNDOM,T

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd