Analysis of distortion in the welding of ‘X’ and ‘V’ joints in reduced-scale models of segmented rings using continuous monitoring with laser sensors

Bottom-business multi-story masonry structure is widely used in small and middle towns in the southward in China. In the downtown of Beichuan county which affected by Wenchuan earthquake, more than 80% of this kind of building collapsed. But the Apartment of Beichuan Telecommunication Bureau behaved well earthquake resistant capacity with a moderate damage in the earthquake. The obvious difference between this building and others is the setting of winged columns in the front longitudinal wall of the first floor. For proving the influence of these members in the structure seismic capacity, the earthquake simulation shaking table test of 2 1/5 reduced scale models were designed and carried out. The models dynamic response, acceleration, displacement and strain were measured and collected, that model with winged columns behave well was testified. And the reinforcement method of balancing stiffness and increasing ductility is put forward. The results provide a foundation for the retrofitting design of the existing houses.

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Investigation of the Mechanical Behavior of 3D Printed Polyamide-12 Joints for Reduced Scale Models of Rock Mass

Rock Mechanics and Rock Engineering ◽

10.1007/s00603-020-02064-9 ◽

2020 ◽

Vol 53 (6) ◽

pp. 2687-2705

Author(s):

Jana Jaber ◽

Marianne Conin ◽

Olivier Deck ◽

Mohamed Moumni ◽

Olivier Godard ◽

...

Keyword(s):

Rock Mass ◽

Mechanical Behavior ◽

Polyamide 12 ◽

Scale Models ◽

3D Printed ◽

Reduced Scale

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A New Class of Distributed Sensors

Journal of Vibration and Acoustics ◽

10.1115/1.2889765 ◽

1997 ◽

Vol 119 (4) ◽

pp. 582-589 ◽

Cited By ~ 4

Author(s):

A. Baz ◽

S. Poh

Keyword(s):

Continuous Monitoring ◽

Composite Beams ◽

Distributed Sensors ◽

Experimental Performance ◽

Distributed Sensor ◽

New Class ◽

Laser Sensors ◽

Frequency Domains ◽

Angular Displacements ◽

Conventional Laser

A new class of distributed sensors is presented which can measure both the linear and angular deflections of composite beams. The sensor relies in its operation on a set of wires which are embedded off the neutral axes of the composite beams. The wires are arranged in a special manner which allows continuous monitoring of the deflection curve of the beam. The output signals of the wires are processed to determine the linear and angular displacements at critical discrete points along the beam axis. The theoretical and experimental performance of the sensor is presented in both the time and frequency domains. Comparisons are given between the experimental performance of the distributed sensor and that of conventional laser sensors in order to demonstrate the accuracy and merits of the distributed sensor. The results obtained suggest the potential of this new class of sensors as a viable means for monitoring the static and dynamic deflections of flexible composite SMART beams and plates.

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Particle Based Numerical Analysis of Green Water on FPSO Deck

Volume 7: CFD and VIV ◽

10.1115/omae2013-11553 ◽

2013 ◽

Cited By ~ 3

Author(s):

Cezar Augusto Bellezi ◽

Liang-Yee Cheng ◽

Kazuo Nishimoto

Keyword(s):

Experimental Data ◽

Numerical Analysis ◽

Sea Water ◽

Three Dimensional ◽

High Amplitude ◽

Green Water ◽

Scale Models ◽

Three Dimensional Models ◽

Reduced Scale ◽

Good Agreement

The green water phenomenon is boarding of sea water onto the deck due to high amplitude waves, which can cause several damages to the equipment on deck. In the present paper the green water phenomenon on three-dimensional models is analyzed using the Moving Particles Semi-Implicit Method (MPS), a fully lagrangian method for incompressible flow. This work is focused on the validation of the method comparing the numerical results with experimental results for green water on reduced scale models. The pressure on sensors over the deck of the models shows good agreement with experimental data.

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Late Minoan III and Early Iron Age Cretan Cylindrical Terracotta Models: A Reconsideration

The Annual of the British School at Athens ◽

10.1017/s0068245400021316 ◽

2006 ◽

Vol 101 ◽

pp. 183-216 ◽

Cited By ~ 2

Author(s):

Vassilis P. Petrakis

Keyword(s):

Iron Age ◽

Early Iron Age ◽

Ancestor Worship ◽

Archaeological Data ◽

Scale Models ◽

Terracotta Figurines ◽

Relationship Of ◽

The Relationship ◽

Theoretical Issues ◽

Reduced Scale

The present study explores the possible interpretation of the terracotta cylindrical models found in Late Minoan to Early Iron Age contexts (generally known as “(circular) hut models”) as reduced-scale models of tholos tombs. Theoretical issues concerning the relationship of an ‘architectural model’ with the archaeological context in which it is found are examined in order to support the above-mentioned suggestion. Archaeological data concerning the morphology, chronology, distribution, use and significance of the Late Minoan and Early Iron Age tholos tombs are explored in order to contribute to the discussion. The possible connection between the presence of the LM III tomb models in domestic contexts and the absence of contemporary intramural burials allows us to expand on the possible significance of these artefacts for our knowledge of LM mortuary practices and beliefs, especially those concerning the possible practice of ‘ancestor worship’. The presence of terracotta figurines of the ‘Minoan Goddess with Upraised Arms’ type attached in the interior of two examples (from SM Knossos and PG B Archanes) is considered as a late development within the tradition of these models and linked with the practice of placing MGUA figures in Early Iron Age tholos tombs (Rhotasi, Kourtes).

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A Wind Tunnel Study Correlating the Aerodynamic Effect of Cooling Flows for Full and Reduced Scale Models of a Passenger Car

10.4271/2010-01-0759 ◽

2010 ◽

Cited By ~ 2

Author(s):

Lasse Christoffersen ◽

Christoffer Landström ◽

Tim Walker

Keyword(s):

Wind Tunnel ◽

Passenger Car ◽

Cooling Flows ◽

Scale Models ◽

Aerodynamic Effect ◽

Wind Tunnel Study ◽

Reduced Scale

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Geotechnical characterization and modelling of the “Fallen Lands” phenomenon in the amazon environment

Global Journal of Engineering and Technology Advances ◽

10.30574/gjeta.2021.9.3.0168 ◽

2021 ◽

Vol 9 (3) ◽

pp. 122-132

Author(s):

Elias Santos Souza ◽

Nilton de Souza Campelo ◽

Raimundo Humberto Cavalcante Lima ◽

René Levy Aguiar

Keyword(s):

Shear Strength ◽

Computational Models ◽

Sandy Soils ◽

Shear Resistance ◽

Critical Conditions ◽

Soil Layers ◽

Economic Problems ◽

Geotechnical Characterization ◽

Scale Models ◽

Reduced Scale

In many rivers of the Amazon, mainly along the Amazon River, the phenomenon of "fallen land" occurs at the time of the rivers' ebb, causing the erosion of river banks, resulting in major social and economic problems. The influence of saturation/percolation of soil layers on the shear resistance of the affected massifs is unknown. Thus, the main objective of the characterization and geotechnical modelling of these slopes is to determine the shear strength of the affected massifs. For this purpose, deformed and undeformed samples were collected from the various layers of the soil massif in a location where the phenomenon was under development. These samples were characterized physically, chemically, and mechanically. Subsequently, the massifs were recreated in reduced scale models, observing the critical conditions in which the disaster occurred, and qualitatively comparing them with slope stability computational models. The results showed that the layers are classified as silty and sandy soils, with a small fraction of clay, and that there are three types of movements associated with the fallen soils: the fall, overturning, and rotational landslide, all actively influenced by the effects of the river's ebb, saturation/percolation, and texture.

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