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  ASME Analysis of a Three-Dimensional Tank-Liquid-Soil Interaction Problem
Posted by: mybest - 07-21-2012, 11:29 PM - Forum: Journals, Papers and Presentations - No Replies

Analysis of a Three-Dimensional Tank-Liquid-Soil Interaction Problem

Author: R. Seeber, F. D. Fischer, F. G. Rammerstorfer | Size: 1 MB | Format: PDF | Quality: Original preprint | Publisher: ASME | Year: 1990 | pages: 6


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A three-dimensional analysis of the dynamic behavior of liquid-filled elastic cylindrical tanks based on flexible grounds, undergoing horizontal and vertical earthquake excitation is presented. The interaction of the ideal fluid with the elastic shell and with the flexible ground yields a problem of linear potential theory which must be solved together with the equations of motion of the shell and of the ground. With the unknown modal shapes of vibration developed in Fourier and in Fourier-Bessel series, the partial differential equations are transformed into coupled generalized equations of vibration by a weighted residual approach. The results show the strong influence of the flexible ground characterized by a remarkable shifting of natural frequencies, by the existence of additional natural frequencies, and by high damping ratios.

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  Ramadan
Posted by: Administrator - 07-21-2012, 07:19 PM - Forum: Free Discussion - No Replies

Hello;

according to our reports, we have a lot of Muslim in our site, these days one of the holy moon of Muslims has been started, it is Ramadan.
I want to congratulate this month to all Muslims, and request you pray us.

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You can find more information about Ramadan here:
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  Research possibilities at universities
Posted by: freequo - 07-21-2012, 04:01 PM - Forum: Free Discussion - No Replies

Hello fellows,
I was wondering, here on the forum there are lot's of young engineers and researches.
I was curious, does anyone have any information about job possibilities in geotechnical field. For example, there is University of BBD and it looks some young researcher for some research in landslide mitigation. Something like that.
Best regards
freequo

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  ASCE 7-10 Wind Provisions and Effects on Wood Design Construction
Posted by: ykhackhack - 07-21-2012, 12:34 PM - Forum: Bad Posts (eBooks) - No Replies

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  Springer Journals
Posted by: giguni - 07-21-2012, 08:51 AM - Forum: Archive - Replies (5)

Dear members, I need:

Advantages of Using Multichannel Analysis of Love Waves (MALW) to Estimate Near-Surface Shear-Wave Velocity
Surveys in Geophysics
Volume 33, Number 5 (2012), 841-860

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Finite-Difference Modeling and Dispersion Analysis of High-Frequency Love Waves for Near-Surface Applications
Pure and Applied Geophysics
Volume 167, Number 12 (2010), 1525-1536
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Thanks

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  Architecture for a Changing World
Posted by: lisine - 07-20-2012, 01:10 PM - Forum: Architecture Books - Replies (2)

Architecture for a Changing World

Author: James Steele | Size: 103 MB | Format: PDF | Quality: Scanner | Publisher: John Wiley & Sons | Year: November 10, 1992 | pages: 212 | ISBN: 1854901737, ISBN-13: 978-1854901736

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Recent social, political and environmental upheavals have had a two-fold effect on the built environment in Third World countries. They have destroyed the traditional cultural structure in rural areas, which has led to homelessness and the marginalization of entire communities, and large-scale urbanization has become a powerful phenomenon of which the Islamic World is very much a part. Such global changes have had a dramatic impact on the jury for the Aga Khan Award for Architecture, whose selections for 1992 are presented here. The projects selected this year, which address issues relevant to both the developing and developed world, are economically sustainable, humanistic solutions to difficult problems, and generate a new architectural language. They provide a valuable insight into an alternative design approach for both rural and urban environments. Essays by Suha Ozkan of the Aga Khan Award for Architecture, Mohammed Arkoun, Professor of Islamic Thought at the Sorbonne,Paris, and Arif Hasan, Pakistani architect and planner, place the projects within the context of the major social transition now underway, and an article by the late Hassan Fathy on Contemporaneity in the City provides a historical perspective. Each award-winning project is described in detail by Charles Moore and Selma al-Radi, and they are comparatively reviewed by James Steele, and a brief history of Samarkand, where the awards were presented, completes this volume.

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  APA Engineered Wood Products
Posted by: ykhackhack - 07-20-2012, 04:12 AM - Forum: Other Materials (Wood, Brick, etc.) - No Replies

APA ENGINEERED WOOD CONSTRUCTION GUIDE

Size: 13 MB

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In searching the forum I found that one of the main material used these days (plywood) does not have enough space.
One of the major association globally is "APA Engineered Wood Association"
I will try to put some information here.

A Short History of APA

APA — The Engineered Wood Association is the nonprofit trade association of the U.S. and Canadian engineered wood products industry. Based in Tacoma, Washington, the Association is comprised of and represents manufacturers of structural plywood, oriented strand board (OSB), structural composite panels, glued laminated (glulam) timber, wood I-joists, and laminated veneer lumber (LVL). (See the glossary backgrounder for explanation of these products.)

APA was founded in 1933 as the Douglas Fir Plywood Association to advance the interests of the burgeoning Pacific Northwest plywood industry. Adhesive and technology improvements eventually led to the manufacture of structural plywood from Southern pine and other species, and in 1964 the Association changed its name to American Plywood Association (APA) to reflect the national scope of its growing membership.

The Association’s membership expanded again in the early 1980s with the introduction of oriented strand board (OSB), a product the Association helped bring to market through development of new panel performance standards. A decade later, APA formed a related nonprofit organization now called Engineered Wood Systems (EWS) to accommodate manufacturers of non-panel engineered wood products, such as glulam timber, wood I-joists and laminated veneer lumber.

To better reflect the broadening product mix and geographic range of its membership, the Association changed its name again in 1994 to APA—The Engineered Wood Association. The acronym “APA” was retained in the name because it was so widely known and respected in the marketplace.

Today, APA and EWS represent approximately 152 engineered wood product mills in the U.S., Canada and abroad.

You can go to their web site and sign up to have access all of this and more information

Regards

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  Journal of Pressure Vessel Technology
Posted by: ssobhan - 07-19-2012, 08:28 PM - Forum: Archive - Replies (1)

I need this paper for my research. I thank you share this, please.
Title: Analysis of a Three-Dimensional Tank-Liquid-Soil Interaction Problem
journal: J. Pressure Vessel Technol.-February 1990-Volume 112,Issue 1, 28 (6 pages)
Author(s): R. Seeber and F. D. Fischer

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  FIFA Football Stadiums – Technical Recommendation and Requirements
Posted by: warbeast - 07-19-2012, 10:43 AM - Forum: Project Management - Replies (1)

FIFA Football Stadiums – Technical recommendation and requirements

Author: FIFA | Size: 68.1 MB | Format: PDF | Quality: Original preprint | Publisher: FIFA | Year: 2011 | pages: 420

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FIFA Football Stadiums – Technical recommendation and requirements 5th Edition

General Technical recommendation and requirements for Football stadiums.

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  Journal of Geophysics and Engineering - Requested papers
Posted by: lisine - 07-19-2012, 09:13 AM - Forum: Journals, Papers and Presentations - Replies (2)

Utilization of multimode Love wave dispersion curve inversion for geotechnical site investigation

Author: La Hamimu, Mohd Nawawi,Jamhir Safani | Size: 1.5 MB | Format: PDF | Quality: Original preprint | Publisher: Journal of Geophysics and Engineering, Volume 8, Number 2 | Year: June 2011 | pages: 11 | ISSN: 1742-2132

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Inversion codes based on a modified genetic algorithm (GA) have been developed to invert multimode Love wave dispersion curves. The multimode Love wave dispersion curves were synthesized from the profile representing shear-wave velocity reversal using a full SH (shear horizontal) waveform. In this study, we used a frequency–slowness transform to extract the dispersion curve from the full SH waveform. Dispersion curves overlain in dispersion images were picked manually. These curves were then inverted using the modified GA. To assess the accuracy of the inversion results, differences between the true and inverted shear-wave velocity profile were quantified in terms of shear-wave velocity and thickness errors, ES and EH. Our numerical modeling showed that the inversion of multimode dispersion curves can significantly provide the better assessment of a shear-wave velocity structure, especially with a velocity reversal profile at typical geotechnical site investigations. This approach has been applied on field data acquired at a site in Niigata prefecture, Japan. In these field data, our inversion results show good agreement between the calculated and experimental dispersion curves and accurately detect low velocity layer targets.

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