Unformatted text preview: nput Listing: vm130.dat Test Case
For the saw tooth wave shown below, determine the coefficients of the Fourier series approximating this wave.
Plot both the given wave and the wave as evaluated from the calculated series. Figure 130.1 Saw Tooth Wave Problem Sketch Analysis Assumptions and Modeling Notes
The wave is described by 121 points (arbitrary). Twenty four terms are assumed to be sufficient for the series.
Since the wave is antisymmetric, only sine terms with odd modes are chosen. Results Comparison
Target ANSYS Ratio Mode 1 Coefficient 0.811 0.811 1.000 Mode 3 Coefficient -0.901 x 10-1 -0.902 x 10-1 1.002 Mode 5 Coefficient 0.324 x 10-1 0.326 x 10-1 1.006 Mode 7 Coefficient -0.165 x 10-1 -0.167 x 10-1 1.014 ANSYS Verification Manual . ANSYS Release 9.0 . 002114 . © SAS IP, Inc. 1–292 VM130 Figure 130.2 Fourier Display ANSYS Verification Manual . ANSYS Release 9.0 . 002114 . © SAS IP, Inc. 1–293 VM131: Acceleration of a Rotating Crane Boom
Reference: F. P. Beer, E. R. Johnston, Jr., Vector Mechanics for Engineers, Statics and Dynamics,
View Full Document
This note was uploaded on 12/09/2010 for the course DEPARTMENT E301 taught by Professor Kulasinghe during the Spring '09 term at University of Peradeniya.
- Spring '09
- The Land