075 sec analysis assumptions and modeling notes the

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Unformatted text preview: nd Reinhold Co., New York, NY, 1979, pg. 90, tab. 7-1. Analysis Type(s): Static Analysis (ANTYPE = 0) Mode-frequency Analysis (ANTYPE = 2) Mode Superposition Harmonic Response Analysis (ANTYPE = 3) Element Type(s): 2-D Spar (or Truss) Elements (LINK1) Input Listing: vm76.dat Test Case A uniform stainless steel guitar string of length and diameter d is stretched between two rigid supports by a tensioning force F1, which is required to tune the string to the E note of a C scale. The string is then struck near the quarter point with a force F2. Determine the fundamental frequency, f1. Also, show that only the odd-numbered frequencies produce a response at the midpoint of the string for this excitation. Figure 76.1 Guitar String Problem Sketch Material Properties E = 190 x 109 Pa ρ = 7920 kg/m3 Geometric Properties = 710 mm c = 165 mm d = 0.254 mm Loading F1 = 84 N F2 = 1 N Analysis Assumptions and Modeling Notes Enough elements are selected so that the model can be used to adequately charact...
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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.

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