Introduction to Numerical Geodynamic Modelling Taras Gerya
Introduction to Numerical Geodynamic Modelling
Taras Gerya
Cambridge University Press - 2010
ISBN: 0521887542
358 pages PDF 5,3 MB
Numerical modelling of geodynamic processes was predominantly the domain of high-level mathematicians experienced in numerical and computational techniques. Now, for the first time, students and new researchers in the Earth Sciences can learn the basic theory and applications from a single, accessible reference text. Assuming only minimal prerequisite mathematical training (simple linear algebra and derivatives) the author provides a solid grounding in basic mathematical theory and techniques, including continuum mechanics and partial differential equations, before introducing key numerical and modelling methods. 8 well-documented, state-of-the-art visco-elasto-plastic, 2-D models are then presented, which allow robust modelling of key dynamic processes such as subduction, lithospheric extension, collision, slab break-off, intrusion emplacement, mantle convection and planetary core formation. Incorporating 47 practical exercises and 67 MATLAB examples
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this textbook provides a user-friendly introduction for graduate courses or self-study, encouraging readers to experiment with geodynamic models.
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Chemicals used for treatment of water intended for human consumption
BS EN 939-2009 Chemicals used for treatment of water intended for human consumption — Hydrochloric acid
BS EN 938-2009 Chemicals used for treatment of water intended for human consumption —Sodium chlorite
BS EN 936-2006 Chemicals used for treatment of water intended for human consumption — Carbon dioxide
BS EN 902-2009 Chemicals used for treatment of water intended for human consumption —Hydrogen peroxide
BS EN 901-2007 Chemicals used for treatment of water intended for human consumption Sodium hypochlorite
BS EN 900-2007 Chemicals used for treatment of water intended for human consumption Calcium hypochlorite
BS EN 899-2009 Chemicals used for treatment of water intended for human consumption Sulfuric acid
BS EN 898-1998 Chemicals used for treatment of water intended for human consumption Sodium hydrogen carbonate
BS EN 15030-2006 Chemicals used for treatment of water intended for human consumption -Silver salts for the conservation of drinking water for intermittent use
BS EN 15029-2006 Products used for treatment of waterintended for human consumption — Iron (III) hydroxide oxide
BS EN 1406-1998 Chemicals used for treatment of water intended for human consumption. Modified starches
BS EN 13754-2009 Products used for treatment of water intended for human consumption —Bentonite
BS EN 13753-2009 Products used for treatment of water intended for human consumption — Granular activated alumina
BS EN 13752-2009 Products used for treatment of water intended for human consumption —Manganese dioxide
BS EN 12933-2000 Chemicals used for treatment of water intended for human consumption - Chemicals for emergency use - Trichloroisocyanuric acid
BS EN 12915-2-2009 Products used for the treatment of water intended for human consumption — Granular activated carbon Part 2 Reactivated granular activated carbon
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Hi every body,
I have a problem in IDE-CAD programe , which is ;
After i install the programe , and run it a msg show says " this programe can't run on this operating system".
P.S: I have Windows Vista...and i tried ide-cad version 5 and 6 ,but the same problem.
Posted by: tynhanh - 10-25-2010, 03:05 AM - Forum: Archive
- No Replies
Measurement of Soil Properties in the Triaxial Test
Authors: Alan Wilfred Bishop, D.J. Henkel
Hardcover: 190 pages
Publisher: Hodder Arnold; 2nd Revised edition edition (1 Jan 1976)
Language English
ISBN-10: 0713130040
ISBN-13: 978-0713130041
Recommendation of RILEM TC 176: Test methods of frost resistance of concrete
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I strongly request to be corrected if I am wrong on the observations below:
I realised some issue with ETABS but did not go much into its intricacies. Its mathematical though not that much,the simple type,just units conversion.
Lets say our working units are KN-m, this means that approximately i may use 25KN/cubic metre and 2.54 ton/cubic metre as the unit weight and unit mass respectively for reinforced concrete.
Now if you open a new file with KN-m as your working units, and go to define Material properties, you will notice that by default the unit weight is 23.5616KN/cubic metre and unit mass as 2.4007.....(here meaning that unit weight/9.81=unit mass).
Now i would want to assume that 2.4007 is actually ton/cubic metre. But then i go ahead and make a further check. What would this be? I go into the calculator mode of ETABS by shift clicking to access the calculator. Here i change my units temporarily to ton-m. I then enter a value of 2.54 ton/cubic metre, and calculate and then OK the results. Surprisingly, i find that the the unit weight and unit mass are actually the same value. I am still not satisfied cause i feel this should be the correct input but requires more confirmatory testing. I then exit the forms and change my working units for the entire project to ton-m. Now here comes the catch!!!! ETABS defaults the value of unit mass to 0.2448 ton/cubic metre.
Observations
Defaulted inputs are not correct as expected.
Conclusions
ETABS or any other program Users should not take default values for granted. Check them and see if they are correct. If you doubt them, consult. CivilEA is there to help!!
Full-size testing to determine stress concentration factors of dragline tubular joints
Engineering Structures 31 (2009) 43-56
A b s t r a c t
This paper describes the determination of stress concentration factors (SCFs) of dragline tubular joints
through laboratory testing of four full-size dragline tubular joints. Strip gauges are installed both outside
and inside the footprint of the joints to measure stress distribution at the weld toe and weld root.
Measurements for SCF are carried out for two load cases, i.e. tension or compression forces in the main
chord alone and tension or compression forces in the vertical bracings alone with reaction forces in the
inclined braces. The relationship of the SCF between the corresponding weld toes and weld roots are
presented in the paper. The weld profile and weld root gaps that have been measured using the silicon
imprint technique and feeler gauges, provide valuable information for future FE simulation and weld root
failure study using the effective notch stress approach.
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Posted by: ir_71 - 10-24-2010, 02:51 PM - Forum: EN
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EN 10283:2010 Corrosion resistant steel castings
This European Standard applies to corrosion resistant steel castings for general purposes.
This standard relates to castings manufactured from martensitic, austenitic, fully austenitic and austenitic-ferritic steel grades characterised by their chemical composition (see Table 1) and mechanical properties (see Table 2).
In cases where castings are joined by welding by the founder, this European Standard applies.
In cases where castings are welded:
- to wrought products (plates, tubes, forgings);
- or by non founders;
this European Standard does not apply.
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Posted by: ir_71 - 10-24-2010, 02:44 PM - Forum: EN
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EN 10340:2008 Steel castings for structural uses
This European Standard applies to steel castings:
- for structural uses in buildings and civil engineering works. Its uses include housing and service buildings, bridges, roads, pipe network.
In cases where castings are joined by welding by the founder, this European Standard applies.
This European Standard does not apply in cases where castings are welded:
- to wrought products (plates, tubes, forgings...);
- or by non founders.
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Structural Investigation of Historic Buildings: A Case Study Guide to Preservation Technology for Buildings, Bridges, Towers and Mills
By David C. Fischetti
Publisher: Wiley
Number Of Pages: 288
Publication Date: 2009-02-09
ISBN-10 / ASIN: 0470189673
ISBN-13 / EAN: 9780470189672
Product Description:
A toolkit for giving our historic built environment a second life
Conservation of our existing structures has obvious economic and social value. Moreover, historic structures provide an excellent laboratory for studying aspects of structural engineering, materials science, forensic engineering, and building design. Structural Investigation of Historic Buildings: A Case Study Guide to Preservation Technology for Buildings, Bridges, Towers, and Mills provides a practical guide for consulting structural engineers and others on dealing with issues unique to historic structures.
Emphasizing structural evaluation and condition assessment based on sound preservation philosophy, but without burdening the reader with tedious calculations, the book discusses the role of the structural engineer in the evaluation and preservation process and discusses such topics as structural safety, analysis, and conservation. Engaging case studies, drawn from the author's own practice, include:
The Montague Building and Watauga Hall
The Restoration of St. Helena's Church
Market Hall Rehabilitation
Differential Settlement at St. Philip's Moravian Church
James Madison's Montpelier
Relocating the Cape Hatteras Lighthouse
The Timber Trusses of Burr, Town, and Haupt
The Cornish-Windsor Covered Bridge
A New Covered Bridge for Old Salem
The Tohickon Aqueduct
Each case study features a description of the project and its history, a condition assessment, structural analysis, discussion, recommendations, and a description of the subsequent intervention as executed with drawings and photographs.
Both a foundational text for students anticipating a career in preservation and a guide for seasoned structural engineers, Structural Investigation of Historic Buildings gives preservation-minded professionals the tools they need to ensure that potential candidates for restoration, rehabilitation, or adaptive reuse do not meet the wrecking ball without a second chance.
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