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Unformatted text preview: sec). The *VOPER command is used to obtain the first and second derivatives,
and the single and double integrals. Results Comparison
Target ANSYS Ratio df/dt (Max) 5.555 x 10-2 5.554 x 10-2 1.000 d2f/dt2 (Max) 2.424 x 10-3 2.422 x 10-3 0.999 l1 29.18 29.17 1.000 l2 381.7 381.7 1.000 ANSYS Verification Manual . ANSYS Release 9.0 . 002114 . © SAS IP, Inc. 1–290 VM129
max df/dt is obtained as DERIV1 array parameter E.
max d2f/dt2 is obtained as DERIV2 array parameter G I1 = 36 ∫ 0 f dt and I2 = 36 ∫ ∫ f dt dt 0 l1 and l2 are obtained from array parameters F and H (at row 37 corresponding to t = 36 sec) ANSYS Verification Manual . ANSYS Release 9.0 . 002114 . © SAS IP, Inc. 1–291 VM130: Fourier Series Generation for a Saw Tooth Wave
Reference: S. Timoshenko, D. H. Young, Vibration Problems in Engineering, D. Van Nostrand
Co., Inc., New York, NY, 1955, pg. 102, problem 2. Analysis Type(s): Fourier Coefficients Generated and Series Evaluated Using APDL Element Type(s): None I...
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