Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
509642 | Computers & Structures | 2015 | 20 Pages |
•We developed a dynamic viscoelastic response model and finite element solution for layered half-space.•The combined Houbolt, central and forward finite difference method is proposed for time discretization.•It is able to model the temperature and space-dependent material properties.•We validated the approach for a multilayer pavement structure on soil.•The dynamic viscoelastic model considering damping could more accurately emulate structural responses.
This research develops a dynamic viscoelastic model, a Galerkin based time-domain finite element method, and computer program for simulating layered half-space responses under loading pulses. A combined Houbolt, central finite-difference (FD) and forward FD method is proposed for time discretization of acceleration and velocity to reduce time-step lengths. Compared to existing methods, the developed approach has advantages that it: (1) captures the coupled effects of material viscoelasticity, dynamics and system damping, which fosters understanding structural responses and material deformations; (2) is able to model temperature and space-dependent material properties. The model is implemented and validated for a multilayer pavement-soil structure.