Autodesk has rolled out the first new release of its Computational Fluid Dynamics (CFD) tool, taking steps toward tighter integration and suite-level consistency for its expanding portfolio of multiphysics simulation products.
The Blue Ridge deal capped the latest in a string of Autodesk acquisitions to build out its base Simulation portfolio, the most prominent transaction being the 2009 purchase of Algor. At that point, Autodesk had built up a fairly complete simulation story, including multiphysics capabilities from Algor and plastic injection simulation functionality from its prior purchase of Moldflow.
Blue Ridge Numerics and Autodesk had collaborated around Inventor for years, already working together to develop tight integration between the tools and ensuring that geometry could be easily passed back and forth between the programs. The newest release of the Blue Ridge Product, now called Autodesk Simulation CFD, is essentially a rebranded version of CFD 2011 launched nine months ago prior to the acquisition, with a couple of important extras.
The most compelling addition, is the inclusion of Fusion, Autodesk's direct modeling module, to Autodesk Simulation CFD. What this does is give CFD users, who could very well be analysts not skilled in CAD software, an easier way to prepare models for simulation. Just as rival CAD vendor SpaceClaim is positioned as a complementary tool to ANSYS for the very same reason, CFD users can tap Fusion to more easily make changes, manipulate geometry, and de-feature models for simulation.
The addition of Fusion also opens up Autodesk Simulation CFD to work with virtually any CAD model. The second big change with the new CFD tool is the adoption of Autodesk's licensing manager, which provides far more flexibility in how users can deploy the program. A High Performance Computing (HPC) license is built into the base agreement so users that work with CFD on a HPC platform won't incur additional costs, and there is more flexibility in purchasing things separately. On the latter point, one license could cover someone using the interface to set up a simulation and reviewing results, while another was tapping the solver to run an actual simulation.
"Now that we have all these great simulation tools, we want to make sure folks in the industry know we also have the people to back them up," said Mihelcic, adding that 100 percent of the Blue Ridge Numerics development team came over with the acquisition and are still working on developing the CFD code.
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I am looking for this r ASCE research paper "Bearing Pressures for Rectangular Footings with Biaxial Uplift" by Kenneth E. Wilson
Journal of Bridge Engineering Volume 2, Issue 1 (February 1997)
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Dear Forum friends i need following important ref regarding modulus of subgrade reaction.
Subgrade Reaction in Mat Foundation Design
Document Name: SP152-04
Author(s): E. J. Ulrich, Jr.
Publication: Special Publication
Volume: 152
Pages: 95-116
Keywords: bearing capacity; finite element method; mat foundations; settlement (structural); subgrades; Design
Date: March 1, 1995
Second one is
Title: SP-152: Design and Performance of Mat Foundations - State-of-the-Art Review
Publication: Special Publication
Volume: 152
Pages: 267
Date: March 1, 1995
Though the first one is from the second but if some one has first one only then also please post here.
Description:
The Pressure Vessel Handbook covers design and construction methods of pressure vessels made of carbon steel. The Handbook reflects the continuous revisions of the ASME Boiler and Pressure Vessel Code, Section VIII, Division 1; as well as ANSI standards, API specifications, piping codes, and pressure vessel laws. The book contains 460 illustrations, 95 tables, and 30 charts
For 11th Edition :
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Posted by: s0p9015 - 09-15-2012, 09:38 AM - Forum: Archive
- No Replies
Dear All,
I have a requests for multiple items from knovel e-book. All these items are related to fire and blast design. I believe they are the states of the art for the current design practice that will benefit all of us.
The title details and URL for the link to the resources are given in the details below. If you have an access to the titles, please kindly share them with us. The collection contains 11 books in the series that would take quite an effort to download and upload for sharing. I will really appreciate if you can help.
11 books are published under UK SCI and the fire and blast info group and include:
(1) Fire Resistant Design of Offshore Topside Structures
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(3) Use of Ultimate Strength Techniques for Fire Resistant Design of Offshore Structures
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(4)Explosion Resistant Design of Offshore Structures
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(6)Design Guide for Steel at Elevated Temperatures and High Strain Rates
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(7) Simplified Methods for Analysis of Response to Dynamic Loading
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(8) Protection of Piping Systems Subject to Fires and Explosions
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(9) Human Factors Guide for the Protection of Onshore Plants and Offshore Structures against Fires and Explosions
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(10)Advanced SDOF Model for Steel Members Subject to Explosion Loading: Material Rate Sensitivity
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Please I need this paper:
G. Gazetas, P. Dakoulas (1992). “Seismic analysis and design of rockfill dams: state of the art”. Soil Dynamics and Earthquake Engineering. Vol.11, 27-61.
Design of Vibro Replacement - The application of Priebe’s method to extremely soft soils, „floating“ foundations and proof against slope or embankment failure
Vibro Replacement is an accepted method for subsoil improvement, whereby large columns of coarse backfill material are installed in the ground using special vibrators [1]. The bearing behaviour of this composite system, consisting of stone columns and soil, cannot be reliably determined by simple investigation methods. Theoretically, however, the efficiency of vibro replacement can be reliably evaluated. Probably, the most commonly applied method is that developed by Priebe [2] and [3].
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Displacement charts for slopes subjected to seismic loads
Author: Liangzhi You a, Radoslaw L. Michalowski | Size: 231 KB | Format:PDF | Quality:Original preprint | Publisher: Elsevier Science Ltd. | Year: 1999 | pages: 11
Abstract :
Earthquake events in recent years have brought about renewed interest in analyses of slopes subjected to seismic loads. These loads have been accounted for traditionally by using quasi- static loads. Such analyses do not provide any information about permanent displacements, and they neglect the history of seismic shaking. The analysis presented in this note is based on the rigid block displacement technique. A rotational mechanism of slope failure, caused by horizontal
shaking, is considered. Yield accelerations are calculated for uniform slopes, and irreversible displacements are calculated for dierent earthquake records. The displacements can be repre-
sented as the product of a coecient characteristic of a given collapse mechanism and a double time integral of an earthquake acceleration record. Charts are produced to make the application of the results eortless.
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The kinematic theorem of limit analysis is used to evaluate the amount of reinforcement necessary to prevent collapse of slopes. The results are also applicable to some failure modes of reinforced walls. Calculations were performed assuming uniform and linearly increasing distributions of reinforcement strength through the slope height. The computational results are presented in charts, which can be used in design. The seismic influence is substituted with a quasi-static horizontal force. While such an approach ignores the acceleration history and does not allow any insight into the behavior of a structure, it is being routinely used in practice, and the charts are offered as a design aid to determine the amount or strength of reinforcement. The length of reinforcement was also calculated, based on collapse mechanisms which include rupture in some layers and pull-out in others. It was found that the distribution of reinforcement with variable spacing, to match the triangular distribution of ``smeared'' strength, is more economical than a uniform spacing. Uniform spacing requires longer reinforcement and larger strength.
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The traditional approach to stability analysis of granular slopes leads to the safety factor that is associated with a planar failure surface approaching the slope face, whether the slope is "dry" or submerged. However, for partially submerged slopes, a more critical, nonplanar failure surface can be formed. A family of geometrically similar surfaces can be found that is characterized by the same safety factor. If the safety factor drops down to unity and the slope becomes unstable, then a mechanism of an size can form.
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A stability analysis of slopes based on a translational mechanism of failure is presented. The collapse mechanism is assumed to be in the form of rigid blocks analogous to slices in traditional slice methods. The proposed analysis, although based on the kinematical approach of limit analysis, always satisfies the equilibrium of force acting on all blocks in the selected mechanics, all slope stability analyses based on the limit equilibrium of slices can be interpreted in the context of their implicitly assumed collapse mechanisms.
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Author: Radoslaw L. Michalowski | Size: 924 KB | Format:PDF | Quality:Scanner | Publisher: Journal of Geotechnical and Geoenvironmental Engineering | Year: 1997 | pages: 11
Abstract :
A limit analysis approach is applied to determine the amount of reinforcement necessary to prevent collapse of slopes due to reinforcement rupture, pullout, or direct sliding. The reinforcement is uniformly distributed over the height of the slope, and each layer of the primary reinforcement has the same length. A rigorous lower bound to the required reinforcement strength is calculated.
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A three dimensional slope stability analysis for drained frictional cohesive material based on the upper bound technique of limit analysis is presented. A rigid-block toe or above the toe collapse mechanism is considered, with energy dissipation taking place along planar velocity discontinuities. The technique is appropriate for slope analysis when question arises as to the level of permissible loads on slopes where the load is confined to limited area (local load).
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This work has two principal objectives. One is to analyze the main problems that the modern earthquake engineer faces today and describe the innovative approaches that have been proposed for their solution. The other is to present a detailed analysis of some selected modern topics in earthquake engineering. These include vulnerability evaluation of masonry and reinforced concrete buildings, historical monuments, churches and bell towers. A part is devoted to the preservation of the new concept of damage controlled seismic design including modelling and experimental testing of damping devices. Another part deals with the analysis of the seismological characteristics of a recent seismic sequence and its effects on an area of rich cultural heritage.
With reference to the first objective the book presents the characteristics of a review work, but also of a vademecum, because of the profound analysis of the problems, the innovative aspects of the solutions and the vast literature selection. With reference to the second objective, the work stands midway between a research report and a textbook because it is mostly self-contained, the proposed methods are readily applicable in the solution of actual problems by the practicing engineering community but are also characterized by their novelty and thoroughness. Because of these characteristics the book is rather unique in the literature on Structural Earthquake Engineering.
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