Calculation of transient dynamic stress intensity factors at bimaterial interface cracks using a SBFEM-based frequency-domain approach

作     者：Z.J.YANG A.J.DEEKS 

作者机构：College of Civil Engineering and ArchitectureZhejiang University School of Civil and Resource EngineeringUniversity of Western Australia 

出 版 物：《Science China(Physics,Mechanics & Astronomy)》 (中国科学：物理学、力学、天文学（英文版）)

年 卷 期：2008年第51卷第5期

页      面：519-531页

核心收录：

学科分类：080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0801[工学-力学（可授工学、理学学位）] 

基　　金：the Scientific Research Foundation for the Returned Overseas Chinese Scholars,Ministry of Education of China(Grant No.J20050924) the Australian Research Council Discovery Project(Grant No.DP0452681) 

主　　题：scaled boundary finite element method bimaterial interface crack frequency domain dynamic stress intensity factors fast Fourier transform 

摘      要：A frequency-domain approach based on the semi-analytical scaled boundary finite element method(SBFEM) was developed to calculate dynamic stress intensity factors(DSIFs) at bimaterial interface cracks subjected to transient ***-cause the stress solutions of the SBFEM in the frequency domain are analytical in the radial direction,and the complex stress singularity at the bimaterial interface crack tip is explicitly represented in the stress solutions,the mixed-mode DSIFs were calculated directly by *** complex frequency-response functions of DSIFs were then used by the fast Fourier transform(FFT) and the inverse FFT to calculate time histories of DSIFs.A benchmark example was *** re-sults were obtained by modelling the example with a small number of degrees of freedom due to the semi-analytical nature of the SBFEM.