In this paper, the method of vibration analysis for calculating the natural frequency is presented. This method is a simple but exact method of calculating natural frequencies corresponding to the modes of vibration for the cantilevered composite materials conical beam. The influence of natural frequency of the cantilevered composite materials conical beam is presented. This method may be extended to stability analysis of complex structureal elements.

ABSTRACT
 1. Introduction
 2. Method of Analysis
 3. Numerical Examples
 4. Conclusion
 References

• 한봉구(서울과학기술대학교 공과대학 건설시스템공학과) | Han Bong-Koo
• 김동우(서울과학기술대학교 건설시스템공학과) | Kim Dong-Woo
• 백승남(서울과학기술대학교 건설시스템공학과) | Baek Seong-Nam