Computational mechanics in science, applications and teaching

The computational fluid dynamics (CFD) and computational structural mechanics (CSM) focus areas at Argonne's Transportation Research and Analysis Computing Center (TRACC) initiated a project to support and compliment the experimental programs at the Turner-Fairbank Highway Research Center (TFHRC) with high performance computing based analysis capabilities in August 2010. The project was established with a new interagency agreement between the Department of Energy and the Department of Transportation to provide collaborative research, development, and benchmarking of advanced three-dimensional computational mechanics analysis methods to the aerodynamics and hydraulics laboratories at TFHRC for a period of five years, beginning in October 2010. The analysis methods employ well-benchmarked and supported commercial computational mechanics software. Computational mechanics encompasses the areas of Computational Fluid Dynamics (CFD), Computational Wind Engineering (CWE), Computational Structural Mechanics (CSM), and Computational Multiphysics Mechanics (CMM) applied in Fluid-Structure Interaction (FSI) problems. The major areas of focus of the project are wind and water effects on bridges - superstructure, deck, cables, and substructure (including soil), primarily during storms and flood events - and the risks that these loads pose to structural failure. For flood events at bridges, another major focus of the work is assessment of the risk to bridges caused by scour of stream and riverbed material away from the foundations of a bridge. Other areas of current research include modeling of flow through culverts to assess them for fish passage, modeling of the salt spray transport into bridge girders to address suitability of using weathering steel in bridges, CFD analysis of the operation of the wind tunnel in the TFCHR wind engineering laboratory, vehicle stability under high wind loading, and the use of electromagnetic shock absorbers to improve vehicle stability under high wind conditions. This quarterly report documents technical progress on the project tasks for the period of July through September 2011.

The use for mathematical models of natural phenomena has underpinned science and engineering for centuries, but until the advent of modern computers and computational methods, the full utility of most of these models remained outside the reach of the engineering communities. Since World War II, advances in computational methods have transformed the way engineering and science is undertaken throughout the world. Today, theories of mechanics of solids and fluids, electromagnetism, heat transfer, plasma physics, and other scientific disciplines are implemented through computational methods in engineering analysis, design, manufacturing, and in studying broad classes of physical phenomena. The discipline concerned with the application of computational methods is now a key area of research, education, and application throughout the world. In the early 1980's, the International Association for Computational Mechanics (IACM) was founded to promote activities related to computational mechanics and has made impressive progress. The most important scientific event of IACM is the World Congress on Computational Mechanics. The first was held in Austin (USA) in 1986 and then in Stuttgart (Germany) in 1990, Chiba (Japan) in 1994, Buenos Aires (Argentina) in 1998, Vienna (Austria) in 2002, Beijing (China) in 2004, Los Angeles (USA) in 2006 and Venice, Italy; in 2008. The 9th World Congress on Computational Mechanics is held in conjunction with the 4th Asian Pacific Congress on Computational Mechanics under the auspices of Australian Association for Computational Mechanics (AACM), Asian Pacific Association for Computational Mechanics (APACM) and International Association for Computational Mechanics (IACM). The 1st Asian Pacific Congress was in Sydney (Australia) in 2001, then in Beijing (China) in 2004 and Kyoto (Japan) in 2007.The WCCM/APCOM 2010 publications consist of a printed book of abstracts given to delegates, along with 247 full length peer reviewed papers published with free access online in IOP Conference Series: Materials Science and Engineering. The editors acknowledge the help of the paper reviewers in maintaining a high standard of assessment and the co-operation of the authors in complying with the requirements of the editors and the reviewers. We also would like to take this opportunity to thank the members of the Local Organising Committee and the International Scientific Committee for helping make WCCM/APCOM 2010 a successful event. We also thank The University of New South Wales, The University of Newcastle, the Centre for Infrastructure Engineering and Safety (CIES), IACM, APCAM, AACM for their financial support, along with the United States Association for Computational Mechanics for the Travel Awards made available. N. Khalili S. Valliappan Q. Li A. Russell 19 July 2010 Sydney, Australia

A lot of software have constructed in the field of “computational mechanics”. Reusability are not considered in most of the program codes. Therefore, even if the program codes are open to the public, we cannot reuse, extend them because they are too complex and big. Software is said to be “intelligent” property. Then reusability, modulability and extendibility of the software should be considered in computational mechanics. The first duty to researchers is that their own fruits are open to the public. Therefore, it is very important to realize “environment” for common use about computational mechanics software. Object-Oriented Technologies help us with reusability, modulability and extendibility of software

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M2D2022 is the ninth international gathering of a prestigious series of the Mechanics and Materials in Design conferences coordinated by the International Scientific Committee of Mechanics and Materials in Design. Due to the serious restrictions imposed by the pandemic COVID-19, which affected people in Europe and in the whole world, the M2D2022 conference initially scheduled for June 2021 in Funchal/Portugal had to be postponed to 26-30 June 2022 in the same venue. This series of conferences are wholly devoted to advances in mechanics, materials, structural integrity and design. M2D2022 is jointly sponsored by the University of Porto, the University of Toronto and the Portuguese Society of Experimental Mechanics. The conference attracted over 270 contributions, with 242 accepted submissions involving 689 authors from 34 different countries around the world. The conference themes, which address novel and advanced topics on Mechanics and Materials in Design, focused on Theory, Experiments and Applications in Engineering and Biomechanics, including Composite and Advanced Materials, Computational Mechanics, Experimental Mechanics, Fatigue and Fracture Mechanics, Nanotechnologies and Nanomaterials, Tribology and Surface Engineering, Mechanical Design and Prototyping, Biomechanical Applications, Civil Engineering Applications, Energy and Thermo-Fluid Systems, and Industrial Engineering and Management, among other topics. The conference also included an Open Forum on “Overcoming Unethical Publishing Practices”, where an expert panel with many years of collective and active researchers and educators addressed the obligations of publishers and authors with ethical practices in publishing their work. We believe that the meeting offered our delegates a forum for the discussion and dissemination of their recent work in assessing the integrity, reliability and failure of engineering structures, components and systems, fostered research that integrates mechanics and materials in the design process, and promoted exchange of ideas and international co-operation among scientists and engineers in this important field of engineering. We are indebted to the authors and special guests for their contributions. Each of the 242 approved papers offers an opportunity for thorough discussions with the authors and the scientific community. Particularly, we acknowledge the excellent contributions of the participants, their innovative ideas and research directions, their novel modeling and simulation techniques, and their invaluable critical comments. We are also indebted to the outstanding keynote speakers who highlighted the conference themes with their contributions and covered the main topics of the conference. We also take this opportunity to thank the members of the International Scientific Committee and the reviewers for their time and helpful suggestions, the symposia organizers for their efforts and valuable contributions to the success of the event, and the local organizing committee for an absolutely superb organization of the meeting in this magnificent city of Funchal. To all of you, we offer our gratitude.

In Memoriam: Dr. Clive L. Dym (1942–2016)

Journal of Veterinary Pharmacology and TherapeuticsVolume 35, Issue 6 p. 615-617 SHORT COMMUNICATION Pharmacokinetics of firocoxib and its interaction with enrofloxacin in horses S. COX, S. COX Department of Biomedical and Diagnostic Sciences, University of Tennessee, College of Veterinary Medicine, Knoxville, TN, USASearch for more papers by this authorL. DUDENBOSTEL, L. DUDENBOSTEL Department of Biomedical and Diagnostic Sciences, University of Tennessee, College of Veterinary Medicine, Knoxville, TN, USASearch for more papers by this authorC. SOMMARDAHL, C. SOMMARDAHL Large Animal Clinical Sciences, University of Tennessee, College of Veterinary Medicine, Knoxville, TN, USASearch for more papers by this authorJ. YARBROUGH, J. YARBROUGH Department of Biomedical and Diagnostic Sciences, University of Tennessee, College of Veterinary Medicine, Knoxville, TN, USASearch for more papers by this authorM. SALEH, M. SALEH Department of Biomedical and Diagnostic Sciences, University of Tennessee, College of Veterinary Medicine, Knoxville, TN, USASearch for more papers by this authorT. DOHERTY, T. DOHERTY Large Animal Clinical Sciences, University of Tennessee, College of Veterinary Medicine, Knoxville, TN, USASearch for more papers by this author S. COX, S. COX Department of Biomedical and Diagnostic Sciences, University of Tennessee, College of Veterinary Medicine, Knoxville, TN, USASearch for more papers by this authorL. DUDENBOSTEL, L. DUDENBOSTEL Department of Biomedical and Diagnostic Sciences, University of Tennessee, College of Veterinary Medicine, Knoxville, TN, USASearch for more papers by this authorC. SOMMARDAHL, C. SOMMARDAHL Large Animal Clinical Sciences, University of Tennessee, College of Veterinary Medicine, Knoxville, TN, USASearch for more papers by this authorJ. YARBROUGH, J. YARBROUGH Department of Biomedical and Diagnostic Sciences, University of Tennessee, College of Veterinary Medicine, Knoxville, TN, USASearch for more papers by this authorM. SALEH, M. SALEH Department of Biomedical and Diagnostic Sciences, University of Tennessee, College of Veterinary Medicine, Knoxville, TN, USASearch for more papers by this authorT. DOHERTY, T. DOHERTY Large Animal Clinical Sciences, University of Tennessee, College of Veterinary Medicine, Knoxville, TN, USASearch for more papers by this author First published: 11 January 2012 https://doi.org/10.1111/j.1365-2885.2011.01362.xCitations: 7 S. Cox, Department of Biomedical and Diagnostic Sciences, University of Tennessee, College of Veterinary Medicine, 2407 River Drive, Knoxville, TN 37996, USA. E-mail: scox6@utk.edu Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Citing Literature Volume35, Issue6December 2012Pages 615-617 RelatedInformation

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A computer adaptive language for the development of structural analysis programs

Papers published in Engineering and Computational Mechanics are eligible for awards from the Institution of Civil Engineers. Papers from any of the ICE journals can be nominated for several awards. In addition, each journal has awards dedicated to their specific subject area.On Friday 13 October 2023, ICE president Keith Howells presented awards to the following papers published in Engineering and Computational Mechanics in 2022. The editorial panel nominated their best papers and an awards committee chaired by Tim Broyd allocated the awards.The George Stephenson Medal, awarded to the second best overall paper, was awarded to Daniels and Xie (2022).Understanding and predicting the effects of wind loading on a structure is necessary for safe, effective, and economical engineering design. Wind tunnel techniques often provide data that is not sufficient for the structural engineer. With increasing advances in computational capabilities, Computational Fluid Dynamics techniques have recently become feasible to complement experiments. Of these, one of the most effective is Large-Eddy Simulation (LES). The application of LES to analyse wind loading, and aeroelastic effects on structures are only a recent venture in the field. This paper reviews the progress made over the last few decades for the analysis of wind flow around slender structures, and the more recent analysis incorporating the effects of freestream turbulence. First, a review of the literature is carried out for generating freestream turbulence approaches, of which many are used for the analysis of surface pressures on an isolated object. Subsequently, a review is made on wind tunnel experiment and LES for aeroelastic analysis of bridge sections. The recent advances in the understanding of turbulence effects on the aerostatic responses are summarised. Finally, the future of LES and its relationship with wind tunnel experiment for wind loading analysis are discussed.The Telford Premium Prize, presented to the best paper published in Engineering and Computational Mechanics, was awarded to Cannon et al. (2022). ‘Long-duration’ blast waves can exert damaging drag loads on finite structural columns that are complex to characterise. In the absence of suitable drag coefficients, computational fluid dynamics (CFD) can be the only satisfactory approach for calculating blast loading. Commercially available CFD software with shockwave modelling capabilities require solving the Euler equations that assume inviscid flow. Two Eulerian solver types are generally used: Godunov and flux-corrected transport, the latter of which is commonly perceived as more accurate for shockwave problems. This study investigates the capability of both solvers for calculating drag loading from long-duration blast interaction with an I-section, verified through comparison to experimental measurements. No solver sensitivity was observed for pressures on exposed geometry surfaces, although discrepancies were observed for shielded surfaces, particularly during later stage interaction. The Godunov scheme demonstrated increased computational efficiency and reliability in comparison to the flux-corrected transport solver type, generating results in better agreement to experimental data. The results provided new understanding of solver sensitivity for modelling long-duration blast drag loading on finite targets using Eulerian CFD analyses.

The aim of this pilot study is a preliminary evaluation of previous models / modalities of online teaching at the Faculty of Medical Sciences in Serbia and to examine the attitudes of students and academic staff about education during the COVID-19 pandemic, as well as their previous experiences. The research was designed as an observational qualitative epidemiological study which was conducted on a population of students and academics staff at the Faculty of biomedical sciences, University of Kragujevac during the pandemic of SARS-CoV-2 infection in Serbia. The first phase is a pilot study which included 332 participants performed between December 2020 and January 2021. The pilot study questionnaire is formed for the purposes of the research and consists of 17 closed-ended questions with graduated answers. Students and academic staff completed the questionnaire through an online learning platform in all environments and from all electronic devices. The importance of this study is reflected in the fact that it provides detailed and valid data that can serve the purpose of improving the efficiency of online teaching at the faculties of medical sciences in Serbia In general, the results of our study indicate that in addition to great inexperience, both students and academic staff cope well during online education and the changed environment and learning conditions despite all the difficulties.

This monograph addresses the state of the art of reduced order methods for modeling and computational reduction of complex parametrized systems, governed by ordinary and/or partial differential equations, with a special emphasis on real time computing techniques and applications in computational mechanics, bioengineering and computer graphics. Several topics are covered, including: design, optimization, and control theory in real-time with applications in engineering; data assimilation, geometry registration, and parameter estimation with special attention to real-time computing in biomedical engineering and computational physics; real-time visualization of physics-based simulations in computer science; the treatment of high-dimensional problems in state space, physical space, or parameter space; the interactions between different model reduction and dimensionality reduction approaches; the development of general error estimation frameworks which take into account both model and discretization effects. This book is primarily addressed to computational scientists interested in computational reduction techniques for large scale differential problems.

Computational Mechanics has many applications in engineering. Its range of application has been enlarged widely in the last decades. Still new developments are made to which a new discretization scheme belongs: the virtual element method (VEM). Despite being only few years under development the application range of VEM in engineering includes formulations for linear and nonlinear material responses. In this contribution the focus is on fracture mechanics. Especially the treatment of crack propagation will be discussed where VEM has some advantages. The performance of the formulation is underlined by means of representative examples.

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In engineering practice, structures with identical components or parts are useful from several points of view: less information is needed to describe the system; designs can be conceptualized quicker and easier; components are made faster than during traditional complex assembly; and finally, the time needed to achieve the structure and the cost involved in manufacturing decrease. Additionally, the subsequent maintenance of this system then becomes easier and cheaper. The aim of this Special Issue is to provide an opportunity for international researchers to share and review recent advances in the finite element modeling of computational friction contact mechanics. Numerical modeling in mathematics, mechanical engineering, computer science, computers, etc. presents many challenges. The finite element method applied in solid mechanics was designed by engineers to simulate numerical models in order to reduce the design costs of prototypes, tests and measurements. This method was initially validated only by measurements but gave encouraging results. After the discovery of Sobolev spaces, the abovementioned results were obtained, and today, numerous researchers are working on improving this method. Some of applications of this method in solid mechanics include mechanical engineering, machine and device design, civil engineering, aerospace and automotive engineering, robotics, etc. Frictional contact is a complex phenomenon that has led to research in mechanical engineering, computational contact mechanics, composite material design, rigid body dynamics, robotics, etc. A good simulation requires that the dynamics of contact with friction be included in the formulation of the dynamic system so that an approximation of the complex phenomena can be made. To solve these linear or nonlinear dynamic systems, which often have non-differentiable terms, or discontinuities, software that considers these high-performance numerical methods and computers with high computing power are needed. This Special Issue is dedicated to this kind of mechanical structure and to describing the properties and methods of analysis of these structures. Discrete or continuous structures in static and dynamic cases are also considered. Additionally, theoretical models, mathematical methods and numerical analysis of these systems, such as the finite element method and experimental methods, are used in these studies. Machine building, automotive, aerospace and civil engineering are the main areas in which such applications appear, but they can also be found in most other engineering fields. With this Special Issue, we want to disseminate knowledge among researchers, designers, manufacturers and users in this exciting field.