An Efficient H-Adaptive Scaled Boundary Element Method for Transient Elastodynamics

Abstract eng:
This study develops a posterior h-hierarchical adaptive scaled boundary finite element method for transient elastodynamic problems using a mesh refinement procedure which subdivides subdomains. In a time step, the fields of displacement, stress, velocity and acceleration are all semi-analytical and the kinetic energy, strain energy and energy errors are all semi-analytically integrated in subdomains. This makes mesh mapping very simple but accurate. Mesh refinement is very simple, flexible and efficient because only a small number of subdomains are subdivided due to the high accuracy of the SBFEM. The results of an example with stress wave propagation were presented. It is shown that the developed method is capable of capturing the propagation of steep stress regions and calculating accurate dynamic responses, but only using a fraction of degrees of freedom required by adaptive finite element methods.

• Export as: BibTeX | MARC | MARCXML | DC | EndNote | NLM | RefWorks
• Add to your basket