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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Structural Engineering and Mechanics, An Int'l Journal Structural Engineering and Mechanics, An Int'l Journal Vol.66 No.5
- 발행연도
- 2018.1
- 수록면
- 649 - 663 (15page)
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초록· 키워드
오류제보하기
The scaled boundary finite element method is extended to evaluate the dynamic stress intensity factors and T-stress with a numerical procedure based on the improved continued-fraction. The improved continued-fraction approach for the dynamic stiffness matrix is introduced to represent the inertial effect at high frequencies, which leads to numerically better conditioned matrices. After separating the singular stress term from other high order terms, the internal displacements can be obtained by numerical integration and no mesh refinement is needed around the crack tip. The condition numbers of coefficient matrix of the improved method are much smaller than that of the original method, which shows that the improved algorithm can obtain well-conditioned coefficient matrices, and the efficiency of the solution process and its stability can be significantly improved. Several numerical examples are presented to demonstrate the increased robustness and efficiency of the proposed method in both homogeneous and bimaterial crack problems.
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등록된 정보가 없습니다.
참고문헌 (51)
참고문헌 신청
Barsoum, R.S. / 1977 / Triangular quarter point elements elastic and perfectly plastic crack tip elements / Int. J. Numer. Meth. Eng. 11(1):85~98
Belytschko, T. / 2003 / Dynamic crack propagation based on loss of hyperbolicity and a new discontinuous enrichment / Int. J. Numer. Meth. Eng. 58(12):1873~1905
Chen, D. / 2017 / Dynamic fracture analysis of the soil-structure interaction system using the scaled boundary finite element method / Eng. Analy. Boundar. Elem. 77:26~35
Chen, D. / 2014 / A high-order approach for modelling transient wave propagation problems using the scaled boundary finite element method / Int. J. Numer. Meth. Eng. 97(13):937~959
Chen, Y.M. / 1975 / Numerical computation of dynamic stress intensity factors by a Lagrangian finite-difference method / Eng. Fract. Mech. 7(4):653~660
Belytschko, T. / 2003 / Dynamic crack propagation based on loss of hyperbolicity and a new discontinuous enrichment / Int. J. Numer. Meth. Eng. 58(12):1873~1905
Chen, D. / 2017 / Dynamic fracture analysis of the soil-structure interaction system using the scaled boundary finite element method / Eng. Analy. Boundar. Elem. 77:26~35
Chen, D. / 2014 / A high-order approach for modelling transient wave propagation problems using the scaled boundary finite element method / Int. J. Numer. Meth. Eng. 97(13):937~959
Chen, Y.M. / 1975 / Numerical computation of dynamic stress intensity factors by a Lagrangian finite-difference method / Eng. Fract. Mech. 7(4):653~660
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