Release Time:2019-03-12  Hits:

Indexed by: Journal Article

Date of Publication: 2016-12-01

Journal: ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS

Included Journals: Scopus、EI、SCIE

Volume: 73

Page Number: 120-+

ISSN: 0955-7997

Key Words: Viscoelasticity; Cyclic symmetry; SBFEM; Computational expense

Abstract: Scaled Boundary Finite Element Method (SBFEM) and a temporally adaptive algorithm are combined to solve viscoelastic problems. By expanding variables at a discretized time interval, a spatially and temporally coupled viscoelastic problem is decoupled into a series of recursive spatial problems, which are solved by SBFEM, the computing accuracy in the time domain is controlled via a self-adaptive process. For the cyclic symmetric structures, the cyclic symmetry is exploited to reduce the computational expense of SBFEM, both the eigenvalue and system equations of SBFEM are partitioned into a number of smaller independent problems, which are solved by a partitioning algorithm. Two numerical examples are given to verify and illustrate the proposed approach.