Results 211 to 220 of about 10,135 (262)

Continuous Beams over Three Spans

Transactions of the American Society of Civil Engineers, 1929
The matters of accessibility, natural light, and fresh air combine to make three-span construction more prevalent than any other series of multiple spans for buildings.In the colder, and even in th...
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MODE LOCALIZATION IN SIMPLY SUPPORTED TWO-SPAN BEAMS OF ARBITRARY SPAN LENGTHS

Journal of Sound and Vibration, 1998
The present study is concerned with the occurrence and the vari&tion of the mode localization in both periodic beams and non periodic ones.
Dong-Ok Kim, In-Won Lee
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A MULTI-SPAN BEAM WITH THE SAME STRENGTH

Structural Mechanics and Analysis of Constructions
The paper examines a six-span equal-strength beam used in modern construction to create stable, more reliable and efficient building structures. The main characteristics of equal-strength multi-span beams, their advantages and applications are considered.
M.V. ALEXANDROVSKY, S.A. MARTYUSHEVA, S.V. MERKULOVA   +2 more
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Mode localization in multispan beams

AIAA Journal, 1990
The influence of numerous effects on mode localization in multi-span beams is investigated. Finite-element methods are used to study localization as a function of: Timoshenko beam effects; beam end conditions; span length, mass, and stiffness imperfection; viscous damping; axial force; transverse support and rotational coupling stiffness; and modeling ...
S. LUST, P. FRIEDMANN, O. BENDIKSEN
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Handling and Shipping of Long Span Bridge Beams

PCI Journal, 1987
n the early history of the prestressed concrete industry (up to 1960), bridge beams were very bulky (heavy) and their length seldom exceeded 100 ft (30.5 m). In fact, at that time, 80 ft (24.4 m) beams were considered quite long. With advancing prestressing technology, together with the improvement of materials (especially high strength concrete and ...
George Laszlo, Richard R. Imper
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Free Vibration Analysis of a Beam With an Attached In-Span Beam With Tip Mass

Volume 1: Aerial Vehicles; Aerospace Control; Alternative Energy; Automotive Control Systems; Battery Systems; Beams and Flexible Structures; Biologically-Inspired Control and its Applications; Bio-Medical and Bio-Mechanical Systems; Biomedical Robots and Rehab; Bipeds and Locomotion; Control Design Methods for Adv. Powertrain Systems and Components; Control of Adv. Combustion Engines, Building Energy Systems, Mechanical Systems; Control, Monitoring, and Energy Harvesting of Vibratory Systems, 2013
A double-beam system is used to model a single conductor transmission line with a stockbridge damper. The base beam represents the conductor and is subjected to an axial tensile load. The in-span beam with a tip mass at each end models the Stockbridge damper and it is arbitrarily attached to the base beam.
O. R. Barry, J. W. Zu, D. C. D. Oguamanam   +2 more
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Two-span piezoelectric beam energy harvesting

International Journal of Mechanical Sciences, 2020
Abstract This paper reports an analytical study of nonlinear vibratory energy harvesting via a two-span piezoelectric beam. The distributed parameter electromechanical model is applied to explore the benefits of nonlinear interaction between buckled beam spans.
Ze-Qi Lu, Jie Chen, Hu Ding, Li-Qun Chen
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VIBRATION OF MULTI-SPAN TIMOSHENKO BEAMS TO A MOVING FORCE

Journal of Sound and Vibration, 1997
Summary: A method of modal analysis is proposed in this paper to investigate the forced vibration of multi-span Timoshenko beams. The ratio of the radius of gyration of the cross-section to one span length is defined as a parameterr. The effect ofron the first modal frequency of a beam is studied.
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Relations Between Frequency Equations of Single-Span Beams

Journal of Sound and Vibration, 1994
Summary: This paper presents the analysis of frequency expressions corresponding to an arbitrarily restrained uniform single-span Euler--Bernoulli beam. Simple formulas are derived that allow one to express the frequency equation of a beam with more complex boundary conditions in terms of frequency expressions corresponding to beams with simpler ...
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Strengthening of Single-Span Steel-Beam Bridges

Journal of the Structural Division, 1982
The use of post-tensioning to increase the strength of steel beams in beam and concrete-slab bridges is shown to be feasible. The purpose of the study is to determine a technique for increasing the capacity of the bridges to meet today's loadings. The results of testing a half-scale model of an existing bridge indicate that post-tensioning can be used ...
F. Wayne Klaiber, Kenneth F. Dunker, Wallace W. Sanders   +2 more
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