Investigation on the Time Response and Natural Fre-quencies of Cantilever Plates under Rotating Condition

سال انتشار: 1398
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 575

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شناسه ملی سند علمی:

ISAV09_053

تاریخ نمایه سازی: 11 دی 1398

چکیده مقاله:

The eigenvalue problem for the natural frequencies and the time response of a rotating canti-lever orthotropic plate is investigated by employing the extended Galerkin method and ex-tended Kantorovich method. The accuracy and efficiency of the results are established by comparison of two methods which show good agreement. The effects of the choice of trial functions and different number of mode shapes have been presented. Also, the influence of dimensionless parameters such as the hub radius ratio, stagger angle, etc. on the modal char-acteristics of rotating plats is examined. Numerical results show that the centrifugal stiffening rate of the plate in different stiffness ratios is affected by rotational speed and that rate is de-pended on hub radius ratio and stagger angle.

نویسندگان

Hamidreza Rostami

PhD, Department of Ocean Engineering, Amirkabir University of Technology, Tehran,Iran.

Firooz Bakhtiari-Nejad

Professor, Department of Mechanical Engineering, University of Maryland at Baltimore County, USA & Department of Mechanical Engineering, Amirkabir University ofTechnology, Tehran, Iran.

Amir Hossein Modarres-Aval

PhD Student, Department of Mechanical Engineering, Amirkabir University of Technology,Tehran, Iran.

Earl H Dowell

Professor, Department of Mechanical Engineering, Duke University Durham, North Carolina, USA.