A time-domain finite element - boundary element method for two-dimensional nonlinear soil - structure interaction

Thesis/Dissertation · Fri Jan 01 04:00:00 EST 1988

OSTI ID:5290631

Chang, H S

When a finite-element method (FEM) is used to solve the problems concerned with transient soil-structure interactions, the boundary of the mesh generates spurious reflections. Although the finite-element formulation is straightforward for solving the problems with nonlinearity, inhomogeneity, and isotropy, it cannot provide a reliable solution when the domain is infinite. Therefore, another solution method linked to the finite-element method is required when this type of problems is considered. Here the author presents a time-domain formulation of the coupled finite element-boundary element technique (FEBEM). This technique is applied to the antiplane and inplane cases in two-dimensional soil-structure interactions. Rigid foundations embedded in a half-space subjected to incident waves and external excitation are analyzed. Numerical implementations are developed by using an explicit time integration for the combined finite-boundary element method. As a example of a nonlinearity, sliding between the foundation and the linear elastic medium is considered.

• Research Organization: Northwestern Univ., Evanston, IL (USA)
• OSTI ID: 5290631
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
422000* -- Engineering-- Mining & Underground Engineering-- (1980-)
58 GEOSCIENCES
580000 -- Geosciences
BOUNDARY LAYERS
FINITE ELEMENT METHOD
LAYERS
NONLINEAR PROBLEMS
NUMERICAL SOLUTION
SOIL-STRUCTURE INTERACTIONS
TWO-DIMENSIONAL CALCULATIONS