Free Vibration Analysis of Composite Beam Consisting Fibers with Variable Volume Fraction
Publish place: 2nd International Conference on Acoustics and Vibration
Publish Year: 1391
نوع سند: مقاله کنفرانسی
زبان: English
View: 1,315
This Paper With 8 Page And PDF Format Ready To Download
- Certificate
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
ISAV02_095
تاریخ نمایه سازی: 26 اسفند 1391
Abstract:
In this paper, free vibration of fiber-reinforced composite beam in which volume fraction of its fibers varies longitudinally according to power law model is analyzed by using finite elementmethod. Advanced micromechanical model is employed to represent its mechanical properties including elastic and physical properties of this beam. Governing equations of motionderived based on Timoshenko beam theory are descritized by utilizing weak form formulationand spatial approximation of displacement variables into mass and stiffness matrices. Each array of matrices obtained in form of integral is computed numerically by Gauss-Legendre method and finite element codes according to stated method are written in MATLAB software. Under various boundary conditions, computed natural frequencies ofthis composite beam with variable volume fraction of fibers are compared with traditional composite ones in which volume fraction of fiber is constant. Numerical results show that depending on boundary conditions, using fibers with variable volume fraction in composite beam will result in increase of fundamental frequencies, albeit average volume fraction and fiber orientations are the same
Keywords:
Authors
Mohammad H. Kargarnovin
School of Mechanical Engineering, Sharif University of Technology, Azadi Ave., ۱۴۵۸۸
مراجع و منابع این Paper:
لیست زیر مراجع و منابع استفاده شده در این Paper را نمایش می دهد. این مراجع به صورت کاملا ماشینی و بر اساس هوش مصنوعی استخراج شده اند و لذا ممکن است دارای اشکالاتی باشند که به مرور زمان دقت استخراج این محتوا افزایش می یابد. مراجعی که مقالات مربوط به آنها در سیویلیکا نمایه شده و پیدا شده اند، به خود Paper لینک شده اند :