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گواهی نمایه سازی مقاله Identification of Dynamic Damping Properties of a Flexible Structural Adhesive

عنوان مقاله: Identification of Dynamic Damping Properties of a Flexible Structural Adhesive
شناسه (COI) مقاله: JR_TAVA-1-1_004
منتشر شده در دوفصلنامه مبانی نظری و کاربردی علم آکوستیک و ارتعاشات در سال ۱۳۹۴
مشخصات نویسندگان مقاله:

Mohammad Mehdi Meshki - Department of Aerospace Engineering, Amirkabir University of Technology, 15875-4413, Tehran, Iran.
Ali Salehzadeh Nobari - Department of Aerospace Engineering, Amirkabir University of Technology, 15875-4413, Tehran, Iran.

خلاصه مقاله:
In this paper dynamic damping properties of a nominated flexible structural adhesive have been identified using an extended-direct modal based joint identification method. It has been revealed that damping characteristics of adhesive are correlated to both frequency and mode shape. Young’s and shear moduli increase with frequency but damping on the other hand, decrease. The results showed that mode shape has an important role on the dynamic mechanical properties of adhesive. Modes that dominantly create normal stress on the adhesion surface represent higher stiffness and lower loss factor compared to shear modes. The different level of loss factors between bending modes and shear modes are notable, but damping property of bending modes and shear modes on the other hand, is in the same order and decreases with frequency. It has been shown that the effective, viscoelastic, mechanical properties of the adhesive can be identified successfully, using the suggested method of identification

کلمات کلیدی:
Identification ، Dynamic damping properties ، Young's and shear moduli ، Experimental modal ، analysis

صفحه اختصاصی مقاله و دریافت فایل کامل: https://www.civilica.com/Paper-JR_TAVA-JR_TAVA-1-1_004.html