Increase of the ratio (b/a) while the inverse changes occurred with the increase of the ratio ( a/b) for Finally, the natural frequency and the critical velocity were changed directly with The natural frequency decreased slightly with the increase in Second case for any construction of pipe. Natural frequency (ωn) and critical velocity (VC) which in the first case was larger than that at the "L" (1m), and using various pipe materials (PVC, aluminum and steel). Where the half major axis "a" (1cm, 2cm ) and the half minor axis "b" (1cm, 2cm) at the length of pipe Ratios were firstly b/a=1, 2, 3, 4, 5 and then a/b=1, 2, 3, 4, 5 for different thickness "t" (1mm, 2mm), The study examinedĭifferent boundary conditions (clamped – clamped, clamped – pin, clamped – free and pin – pin ). ![]() Of Al2O3 at the ratio of volume concentration (Φ% = 0, 0.1, 03, 0.5). Pipe where the major axis (2a) and the minor axis (2b) conveyed water containing nanoparticles In this research the Rayleigh method was used to estimate the natural frequency of elliptical crosssectional
0 Comments
Leave a Reply. |