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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.
In the diagram points V,W,X,Y and Z are collinear, VZ=52, XZ= 20 AND WX=XY=YZ. Find the indicated length of WX, VW, WY, VX, WZ, and VY
This question is in the form of an exercise and questions designed to give you more insight into signal processing. On the Moodle site for the module there is an EXCEL file called
Go back to the complex numbers code in Figures 50 and 51 of your notes. Add code fragments to handle the following: 1. A function for adding two complex numbers given in algeb
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Negative four is multiplied through the quantity x + 8. If 6x is then added to this, the output is 2x + 32. What is the value of x? twice the quantity x + 6 is divided by negative
1.) How does the monsoon influence the climate and vegetation of Southeast Asia? 2.) What is the main crop in Southeast Asia and the main systems by which it is produce? How and
It is the catch all force. If there are some other forces which we decide we need to act on our object we lump them in now and call this good. We classically call F(t) the forcing
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