Gain-Frequency Characteristics for Several Models of Stratified Geological Medium
Journal Title: Romanian Journal of Acoustics and Vibration - Year 2014, Vol 11, Issue 1
Abstract
Gain-frequency characteristics of displacements of daylight area at forced oscillations are studied. Several models utilizing a layer sitting on top of a basement are considered. Together with a classical model (considering two homogeneous media), investigated are a model for the layer with absorption and a model for the layer having continuous variation of elasticity parameters at transition toward the basement. The case of linear variation of density and a constant velocity is considered in detail. For all structures under consideration, analytical expressions for displacements of daylight area are obtained.
Authors and Affiliations
VIKTOR KIPOT, DMITRII TUMAKOV
Investigation of the Noise at the Limit of Functional Zones
Within the context of sustainable development and environmental protection, a special concern is addressed to the study of noise generation and propagation in the environment. An important contribution to the noise gener...
Some Aspects Regarding the Transition from Beam to Plate Behavior of Vibrating Structures
The paper introduces a new vision about the vibrational behavior of beams and plates, aiming to show the correlation between vibration modes which nowadays are considered of different types. An analysis was performed by...
Construction Equipment Noise Level Decreasing Coefficient – ΔL - Evaluation
The task of this work is the acoustic absorption coefficient variation study of sound absorbing structures and materials. Three construction equipments have been considered according to their different cabin design. Diff...
About the Influence of Temperature Changes on the Natural Frequencies of Clamped-Clamped Euler-Bernoulli Beams
In this paper a beam subjected to axial forces induced by temperature changes has been analyzed, in order to highlight the effect of this parameter on the structures natural frequencies. The modal analysis, performed by...
Numerical Simulation of Real Contact Between Two Bodies
This paper presents the effects appearing inside a beam from a overpass of Arad-Timisoara highway due to impact with a high dumper of a moving vehicle. For this analysis it is developed a simplified calculation and a num...