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1. Dynamic deformations and stresses of beams connected by damping element

Creator:
Půst, Ladislav
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
beam vibration, damping, modes of forced vibration, and stress in roots
Language:
English
Description:
Dynamic properties of two similar, parallel, one-sided clamped beams connected by a damping element on their free ends are analytically and numerically investigated. A harmonic motion excites the end of one of these beams. The main attention is given to the ascertaining of response curves deflection shapes of beams and their stresses in roots at different orientations and levels of damping force. and Obsahuje seznam literatury
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

2. Instrument for monitoring spectral acceleration on response seismic ground motion

Creator:
Buben, Jiří and Rudajev, Vladimír
Format:
print, bez média, and svazek
Type:
article, články, model:article, and TEXT
Subject:
Geologie. Meteorologie. Klimatologie, zesilovače, elektronika, amplifiers, electronics, AD converter, damping, selective filter, transfer function, inverted pendulum, vibration acceleration, spectral response, seismic recorder, 7, and 551
Language:
English
Description:
For investigation of influence of various subsoil geological structures on spectral acceleration amplitudes of foundation soil it is necessary to continue in long time monitoring of near seismic events by using of large number of field accelerometers. The new special apparatus for automatic recording of spectral acceleration response was constructed. Principle of this apparatus is reverse pendulum with piezoelectric converter. This simple construction makes possible production numerous series with small requirements on capital expenditure and installation. The function of developed apparatus prototype was field-tested in station Prague - Květnice. Various seismic signals were recorded and also response amplitude of earthquake with focus near Červený Kostelec (10 October 2005, 10 : 51 : 57.4 ; M = 3.4; R = 156 km; φ = 50.47; λ = 16.07)., Jiří Buben and Vladimír Rudajev., and Obsahuje bibliografii
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public