The real component of the impedance represents the ac

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Unformatted text preview: nation Elements (COMBIN40) Input Listing: vm183.dat Test Case Determine the natural frequencies of the spring-mass system shown and the displacement response when excited by a harmonic load of variable frequency from 0.1 to 1.0 Hz, with an amplitude of Fo. Figure 183.1 Spring-mass System Problem Sketch ANSYS Verification Manual . ANSYS Release 9.0 . 002114 . © SAS IP, Inc. 1–411 VM183 Material Properties k1 = 6 N/m k2 = 16 N/m m1 = m2 = 2 kg Loading Fo = 50 N Analysis Assumptions and Modeling Notes COMBIN40 combination elements are used to represent the springs and masses. Node locations are arbitrary. Results Comparison Target ANSYS Ratio Y1 , m (@ .226 Hz) -1371.7 -1371.7 1.000 Y2 , m (@ .226 Hz) -458.08 -458.08 1.000 Y1 , m (@ .910 Hz) -0.8539 -0.8539 1.000 Y2 , m (@ .910 Hz) 0.1181 0.1181 1.000 Figure 183.2 Displacement vs. Frequency 1–412 ANSYS Verification Manual . ANSYS Release 9.0 . 002114 . © SAS IP, Inc. VM184: Straight Cantilever Beam Overview Reference: Any Basic Mechanics of Materi...
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