0986 300 the alternate method of poissons ratio input

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Unformatted text preview: length γA is pinned at its ends and subjected to an axial compressive force F. Determine the stress σ and the axial displacement δ of the bar under these conditions. Determine the first three natural frequencies fi of lateral vibration of the bar. Figure 59.1 Axially-Loaded Bar Problem Sketch Material Properties E = 30 x 106 psi γ = 0.281 lb/in3 ρ = γ / g = 0.000727973 lb-sec2/in4 Geometric Properties b = h = 2 in Loading F = 40,000 lb = 80 in A = 4 in2 I = bh3/12 = (4/3) in4 Analysis Assumptions and Modeling Notes Enough elements are selected so that the same model can be used to adequately characterize the dynamic analysis. Prestress effects are turned on in the mode-frequency analysis with the stress state calculated in the static analysis. Since the solution accuracy in the mode-frequency analysis for a distributed mass system depends ANSYS Verification Manual . ANSYS Release 9.0 . 002114 . © SAS IP, Inc. 1–139 VM59 upon the number of master degrees of freedom (MDOF) selected, twelve uniformly spaced lateral MDOF are selected. Results Comparison Target Ratio -0.026667 -0.026667 1.000 -10,000 -10,000 1.000 f1 , Hz 17.055 17.052 1...
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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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