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گواهی نمایه سازی مقاله Model identification and dynamic analysis of ship propulsion shaft lines

عنوان مقاله: Model identification and dynamic analysis of ship propulsion shaft lines
شناسه (COI) مقاله: JR_TAVA-1-2_003
منتشر شده در دوفصلنامه مبانی نظری و کاربردی علم آکوستیک و ارتعاشات در سال ۱۳۹۴
مشخصات نویسندگان مقاله:

Hassan Jalali - Department of Mechanical Engineering, Arak University of Technology, University St., Arak, Iran
Hamid Ahmadian - Center of Excellence in Experimental Solid Mechanics and Dynamics, Iran University of Science and Technology, Narmak, Tehran, Iran

خلاصه مقاله:
Dynamic response analysis of mechanical structures is usually performed by adopting numerical/analytical models. Finite element (FE) modeling as a numerical approach plays an important role in dynamic response analysis of complex structures. The calculated dynamic responses from FE analysis areonly reliable if accurate FE models are used. There are many elements in real mechanical structures which make constructing accurate FE modelsdifficult. For example, modeling the boundary supports of mechanical structures are usually challenging because of the uncertainties existing intheir stiffness values. The stiffness values of boundary supports can be identified by using experimental natural frequencies and hence the FE model can be corrected. In this paper, the FE modeling and updating of propulsion shaft lines in a ship structure is considered by employing experimental modal parameters, i.e. natural frequencies. Natural frequencies of shaft lines are measured by performing experimental vibration testing. The corrected FE models are used and dynamic response analysis of shaft lines is conducted.

کلمات کلیدی:
FE modeling ، ، Shaft line ، Vibration measurement ، Updating ، ، Campbell diagram ،

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