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An article in the journal of aircraft (vol. 23, 1986, pp.859–864) described a new equivalentplate analysis method formulation that is capable of modelingaircraft structures such as cranked wingboxes and that produces results similar to the more computationallyintensive finite element analysismethod. natural vibration frequencies for the cranked wing boxstructure are calculated using bothmethods, and results for the first seven natural frequenciesfollow: freq. finite element cycle/s equivalent plate, cycle/s
1 14.58 14.762 48.52 49.103 97.22 99.994 113.99 117.535 174.73 181.226 212.72 220.147 277.38 294.80
a. do the data suggest that the two methods provide the same meanvalue for natural vibrationfrequency? use α = 0.05. find the p-value. b. find a 95% confidence interval on the mean difference betweenthe two methods.
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An article in the journal of aircraft (vol. 23, 1986, pp.859–864) described a new equivalentplate an...
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