Tóm tắt

The Freedom Torsional Vibrations (FTV) Calculation (FTVC) for the marine main propulsion plant (MPP) to determine the freedom frequencies and the FTV formations of the mechanical system. Normally, the MPP is dynamically modeled as a finite n concentrated masses with the parameters of: Mass moment of inertia Jk (kgm2, k = 1÷ n) and the torsional stiffness Ck,k+1 (Nm/rad) between the k and k+1 concentrated masses. This paper studies the influence of the number of concentrated masses n as well as the accuracy of determining Jp (Moment of inertia of the propeller) on the solution of the MPP's FTVC. The research verifies to the MMP on the Korean ship XXX-XXX-XXX, using the MDE 6G70MEC.

Keywords: Freedom Torsional Vibration (FTV); Mathematic model of the FTV; Exactness of the FTV calculation. 


Chuyên mục
Khoa học công nghệ thủy sản
Tiểu sử của Tác giả

Bui Minh Tuan

Naval Technical Institute, 9 Mac Quyet, Anh Dung, Duong Kinh, Hai Phong City

Do Duc Luu

Nam Can Tho University, 168 Nguyen Van Cu, An Binh, Ninh Kieu, Can Tho City

Lai Huy Thien

Vietnam Maritime University, 484 Lach Tray, Le Chan, Hai Phong City

Luu Minh Hai

Naval Academy, 30 Tran Phu, Vinh Nguyen, Nha Trang, Khanh Hoa