Dynamic response of single degree of freedom (duhamel program)
This program use Duhamel method to determine dynamic response of single degree of freedom system under any kind of impact load to mass or time history support acceleration then submit displacement, velocity, acceleration and supportive reaction at each time step as MATLAB output with two phase text and graph.
two different Examples, one for applide impact force to mass and that for applied time history acceleration to support are given which in these examples program outputs compared with the results from SAP2000 software.
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This program use Duhamel integration method to determine elastic response spectrums (include: displacement, velocity and acceleration spectrum) of a system under any timehistory ground acceleration then submit system response spectrum for displacement, velocity and acceleration as MATLAB output in three graph.
to test the program, we compare results of two examples with SeismoSignal program.
Code:
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Elastic response of shear buildings by MODAL analysis method
This program use MODAL analysis method using Jacobi iterative method for calculate eigenvalues and eigenvectors and then Duhamel integration method for numerical solution of equiblibrium equations of motion to determine elastic response of a multi story shear building under any timehistory ground acceleration then submit system response include; story displacements and story shears as MATLAB output in two phase, text and graph.
Finally, to test this program, two different Examples are given which in these examples program outputs compared with the results from SAP2000 software. Similarity of results shows that this program works without any deficiencies as well as this software
Code:
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This program is able to analyze all types of 2D frames with all degrees of freedom under any kind of dynamic concentrated nodal loadings ( Fx(t), Fy(t) , Mz(t) ) using Modal analysis method and submit values of nodal displacements at each time step as MATLAB output. program can determine inertial properties with both Lumped and Consistent mass method. meantime the program have to use lumped method the writers used dynamic condensation method on both mass and stiffness matrixes to calculate eigen problems (eigen values and eigen vectors) without any disorder by Jacobi iterative method.
Finally, to test this program, one Example are given with both Lumped and Consistent mass. which in these example program outputs compared with the results from SAP2000 and ANSYS software (SAP for checking the program when it has to use lumped mass matrix method and Ansys for checking the program when it has to use consistent mass matrix). Similarity of results shows that this program works with the least deficiencies as well as these two softwares.
Code:
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Cold Formed Steel Research at the University of Waterloo and Canada (Power point, Read-Only)
Cold Formed Steel Research at the University of Waterloo and Canada Power Point by
Prof. Reinhold Schuster Director Canadian Cold Formed Steel Research Group
8,1 MB
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■Soil PY curves may be automatically generated or externally generated curves may be used
■The pile may be divided into any number of sections, each with either a fixed flexural rigidity, or for circular or rectangular reinforced concrete sections, a calculated rigidity, based on the section properties, applied bending moment and axial load, and the concrete tensile strength and modulus.
■The flexural stiffness of reinforced concrete sections is based on the method specified in Eurocode 2, and includes the effects of tension stiffening, loss of tension stiffening, and shrinkage and creep.
Code:
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Dear All
herein an excellent video for simulation seismic by (shaking table test) method
the famous university in seismic searching is Berkeley & San Diego - add on Japanese universities
this test was done after ( Kobé ) earthquake in japane in 2006
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I am civil engineer...I have 5+ year experience in construction industry... For 3 years working as a site engineer then moved to office job.....And now 2.5 years exp as a BIM supporter....I know everything about BIM .....I have exp in Nemetschek ALLPLAN, Revit Architecture/structure...Onscreen takeoff....Sage timberline estimating...synchro 4D....but Now I am very curious to learn some structural analysis software...I have started to learn RAM structural system....I made small job in revit structure and exported in RAM....One more thing I also know how to design beam , column , foundation etc....but I want to know how to analyse FEM results....Just think that I am beginner in this filed....so can some one suggest me from where I can start...means particular book ....then fundaments theory then specific software etc.......
Basically I am from India and will move to Australia in couple of months (hopefully will get visa in 2 months:clap:) I want to do a job in office rather than on site in Australia
Plz help me ....give me a path from where I can start
Sometimes we see requests from members to have the links posted to new sites. For example, if the links are say to rapidshare, ifile and megaupload. The request may be to get the link to, say, 4shared or something else.
This somewhat mystifies me. If the links are working, I am able to access all of them. I would like to know:
Item 1 - Do we have members across the globe that do not access to some sites?
Item 2 - If access is not an issue, is it that the request is because the member may have a premium account to that specific site.
If the answer to Item 2 is yes, should this be entertained? Because, then it becomes a question of personal convenience for that member who does not want to avail the slower downloads of free service of all sites.
Author: Japanese Commission on Large D | Size: 10.31 MB | Format:PDF | Publisher: CRC | Year: 2009-04-14 | pages: 240 | ISBN: 041549432X
Overview of Japan’s long water history, by the Japanese Commission on large dams. Starting from the 7th century, when irrigation ponds were first constructed for paddy cropping, until the beginning of the 21st century. Elaborates on various roles of dams: water supply, power generation and flood control. Moreover, tries to clarify the negative impacts of dams on the natural environment and local societies, as well as extensive efforts made to minimize these impacts. Includes appendices with location and characteristics of main dams, administrative organs, river management system and water resources development river systems and facilities to offer the full picture. Richly-illustrated. Intended for dam and water resources professionals.
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Posted by: ssi3k - 12-31-2010, 10:40 AM - Forum: Archive
- No Replies
Hi All,
Can anybody please share his copy of "Concrete ground floors their design, construction and finish, 3rd edition, 1986, by the Concrete and Cement Association.
Posted by: utan - 12-31-2010, 09:14 AM - Forum: Archive
- No Replies
Dear all,
In many book we can find the criteria for Consistency of Cohesive Soils or Relative Density for Granular Soils based on SPT or unconfined compressive strength qu as following pic:
Does any one know the standard (ASTM, EN-ISO, AASHTO...) specify this issue?
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