Title :
Natural frequency analysis of a rotating circular disk using the reformed Barasch´s method
Author :
Young-Bae Chang ; Eul-Gyoon Lim ; No-Cheol Park ; Young-Pil Park
Author_Institution :
Dept. of Mech. Eng., Yonsei Univ., Seoul
Abstract :
In this study, Barasch´s method is improved upon to calculate the natural frequencies of rotating disks in less time. The characteristics of the natural frequencies in rotating coordinates are studied and an estimation procedure that uses cantilever and conic curves is suggested to conveniently calculate the natural frequencies and mode shapes. The convergence speed of Barasch´s method is accelerated by estimating an initial value of the solution for the characteristic equation
Keywords :
disc drives; discs (structures); estimation theory; rotation; vibrations; cantilever curves; conic curves; disc drives; estimation procedure; mode shapes; natural frequency analysis; reformed Barasch method; rotating circular disk; rotating coordinates; Acceleration; Boundary conditions; Differential equations; Disk drives; Frequency estimation; Hard disks; Mechanical engineering; Shape; Vectors; Vibrations;
Conference_Titel :
Asia-Pacific Magnetic Recording Conference, 2004. APMRC 2004
Conference_Location :
Seoul
Print_ISBN :
0-7803-8717-1
DOI :
10.1109/APMRC.2004.1521969
