An axial traction of 15000 psi is applied to the edge

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Unformatted text preview: ss t, and mass density m is subjected to random uniform force power spectral density. Determine the peak response PSD value. Figure 19.1 Simply-Supported Beam Problem Sketch P¢dcDaIY`IWUVQ HY b@  X2   &£ %10¨©!RTRSR£¤¡ bg f ihSe A B C @¨PQHI2 G F0!&© ( E¨©D¡ " @ §98¤¡¦£756#©)4¤23&#£ %10!& ()" '& %$¡#£ " !¤©© §¨¥¦£¤¡¢ Material Properties E = 200 x 109 N/m2 υ = 0.3 m = 8000 Kg/m3 Geometric Properties Loading PSD = (106 N/m)2 /Hz Damping δ = 2% = 10. m t = 2.0 m Analysis Assumptions and Modeling Notes All degrees of freedom in the Y direction are selected as master degrees of freedom (MDOF). A frequency range of .1 Hz to 70 Hz was used as an approximation of the white noise PSD forcing function frequency. Results Comparison Target ANSYS Ratio Modal Frequency f (Hz) 42.65 42.66 1.00 PSD Freq (Hz) 42.66 42.64 1.00 Peak d PSD(mm2/Hz) 180.9 179.36[1] 0.99 Peak stress PSD(N/mm2)2 /Hz 58516. 58553.[1] 1.00 ANSYS Verification Manual . ANSYS Rele...
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