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- Title
Alternative Kinematic Assumptions for the Motions of Structures with Multiple Dynamic Degrees of Freedom Subjected to Seismic Actions.
- Authors
MURZEA, Patricia
- Abstract
The paper represents a work of synthesis and research for the earthquake response of structures under various assumptions. The cases of a structure with multiple degrees of freedom, having a rigid body motion between the ground-structure interface and a random, spatial motion are presented. The earthquake induces a spatial, random motion to the ground-structure interface contact points and alternative ways and hypotheses of determining the equations of motion and their solutions are shown. New approaches are needed because the simplified manner in which this subject is usually treated (one degree of freedom or plane structures) is not compatible with the real, physical, phenomenon and may introduce coarse errors in analyses or design. When the non-synchronous nature of motion of the ground-structure interface is important, instead of dealing with the unknowns of relative displacements, absolute displacements should be considered.
- Subjects
DEGREES of freedom; SEISMOLOGICAL research; SEISMIC waves; EQUATIONS of motion; DISPLACEMENT (Mechanics); RIGID body mechanics
- Publication
Romanian Journal of Acoustics & Vibration, 2014, Vol 11, Issue 1, p53
- ISSN
1584-7284
- Publication type
Article