http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
고체내 탄성파 전파의 수치해석을 위한 질량스프링 모델 개발
孫榮薰,任賢準 弘益大學校 科學技術硏究所 1999 科學技術硏究論文集 Vol.10 No.1
A mass-spring lattice model is used to develop a numerical analysis which can simulate the phenomena of elastic wave propagation and scattering effectively. In order to confirm the reliability of their numerical results, the consistency, convergence, stability and accuracy of the algorithms are studied using the Taylor series expansion and the von Neumann analysis. As a result, the optimum size of time step is found for a given mesh size, such that more accurate numerical solution can be obtained in high frequency regime, along with significant saving of computation time. Numerical results have been obtained for fundamental problems in ultrasonic testing such as plane waves incident on cracks. All numerical results have shown excellent agreements with analytical results, and the reflected, diffracted, head, and Rayleigh waves have been observed. An improved mass-spring lattice model is shown to produce more accurate results for surface wave propagation than the previous models.