The Society of Engineerings

Amir R. Khoei ... 584 pages - Publisher: Wiley; (February, 2015) ... Language: English - ISBN-10: 1118457684 - ISBN-13: 978-1118457689.

The finite element method (FEM) technique has been developed to simulate and analyze complex engineering problems. However, there are a number of drawbacks with finite element simulation of discontinuous problems, such as fracture mechanics problems, including the computational cost of a very fine finite element mesh and the complex remeshing strategy in capturing discontinuity. The extended finite element method (XFEM) has therefore been developed to improve the performance of the conventional finite element method in discontinuity problems. Extended Finite Element Method: Theory and Applications introduces the theory and applications of XFEM in the linear and nonlinear problems of continua, structures, and geomechanics. It begins by introducing the concept of a partition of unity, various enrichment functions, and fundamentals of XFEM formulation. It then covers the theory and application of XFEM in large deformations, plasticity, and contact problems. The implementation of XFEM in fracture mechanics, including linear, cohesive, and ductile crack propagation, is also covered. Finally, the theory and applications of XFEM in multiphase fluid flow, including hydraulic fracturing in soil saturated media and crack propagation in thermo-hydro-mechanical porous media, are discussed in detail. Key features: Comprehensively introduces XFEM analysis + Explains the theory and applications of XFEM in various continuum and geo-mechanical problems + Includes worked examples + Accompanied by a website hosting source code and examples. Extended Finite Element Method: Theory and Applications is a comprehensive introduction to XFEM analysis for researchers and practitioners in industry, and is also an ideal textbook for graduate students in mechanical and civil engineering.ccompanied by a website hosting source code and examples

Oasys Greta v19.3.5.0 [Size: 102 MB] ... Oasys Greta is a tool for civil and geotechnical engineers that provides comprehensive stability analysis for gravity retaining walls, and forms part of our Geotechnical Suite Pro and Geotechnical Suite bundles.

For the stability analysis of gravity retaining wall design, Oasys Greta provides users with the ability to validate and standardise in-house calculations across projects.

Civil and geotechnical engineers responsible for routine gravity retaining wall design use Oasys Greta as it provides a validated, robust and user-friendly method of calculations, ensuring acceptable and appropriate QA and QC standards are met.

Oasys Safe v19.1.1.31 [Size: 69 MB] ... Solve your geotechnical problem with powerful two-dimensional geotechnical finite element design software. Whether you need to do two-dimensional finite element computations in plane stress, plane strain, or axial symmetry, Safe takes care of it. The smart geotechnical finite element analysis software identifies pore pressures and effective stresses separately and includes gravitational loads and initial stresses.

Features: Analysis of plane stress, plane strain or axially symmetric problems. General loading of linear elastic axisymmetric structures can be carried out using a Fourier series technique. + Linear or non-linear behaviour. + Gravity loading. + Pore pressures and effective stresses are identified separately, allowing computation for drained or undrained conditions, and time dependent consolidation. + Incremental loading and changes of material properties, permitting the formation of excavations, embankments etc. + Intermediate results can be stored and inspected before the problem is continued further. + Pressure (distributed) and line loading. + Fixed or spring restraints. + 8 noded quadrilateral elements. These can be curvilinear. + Consolidation problems. + Wells. + Seepage and flow. + Extensive graphical input options and in-built mesh generation facility.

Oasys Slope v21.0.40.0 [Size: 120.6 MB] ... Oasys Slope is a tool for civil and geotechnical engineers which provides an easy and accurate way to study a slip surface, finding factors of safety against failure, and to check suggested improvements from reinforcement.

Oasys XDisp v20.2.3.0 [Size: 121 MB] ... Oasys XDisp Pro is used to undertake and produce building, utilities and rail damage assessments, can undertake a multi-stage construction analysis without the need for multiple models, and is a core component of the Ground Movement Bundle Pro and the Geotechnical Suite Pro.

Oasys XDisp Pro is used by geotechnical and civil engineers on projects that require the need to control, limit and mitigate excessive ground displacements which may have a detrimental effect on existing or future builds.

Geotechnical and civil engineers overseeing ground movement assessments such as part of linear infrastructure design use Oasys XDisp Pro as it provides a validated, robust and user-friendly method of calculations, ensuring acceptable and appropriate QA and QC standards are met.

Combined with Oasys PDisp, geotechnical engineers can undertake comprehensive building and utilities damage assessments, including multi-stage construction analysis.

PLAXIS 2D CONNECT Edition V22 Update 1 [Size: 2.4 GB] ... PLAXIS 2D is a powerful and user friendly finite element package intended for two-dimensional analysis of deformation and stability in geotechnical engineering and rock mechanics. PLAXIS is used worldwide by top engineering companies and institutions in the civil and geotechnical engineering industry. Applications range from excavations, embankment and foundations to tunnelling, mining and reservoir geomechanics.

PLAXIS is equipped with a broad range of advanced features to model a diverse range of geotechnical problems, all from within a single integrated software package. PLAXIS uses predefined structural elements and loading types in a CAD-like environment. This empowers the user with fast and efficient model creation, allowing more time to interpret the results.

Since PLAXIS V22 Update 1 also contains the new data structure of the material database and the more flexible and more robust way of handling project units introduced in the previous release, similar precautions apply with respect to V21 release compatibility. PLAXIS V22 Update 1 will be installed alongside PLAXIS V21, instead of overwriting it. Calculated V21 projects opened with this latest release will automatically be saved as a converted copy with the _converted suffix. After the conversion, remeshing and recalculation are required. In this case, the original V21 project will remain unchanged. For V21 projects that only have their geometry and/or some material sets defined and may be either meshed or not, these projects will be opened by V22 Update 1 without converting to a saved copy. The original V21 project would be overwritten upon saving.

The known issue that caused the assignment of the material factor labels to the material models parameters to be lost, when a V21 project containing Design Approaches is opened with V22 is now fixed in the latest release. Note that these converted projects are stored in the file format for PLAXIS V22 Update 1, this means that earlier versions of PLAXIS will not be able to open the converted project files. To continue using V21, users can just open the original V21 project.

Bentley PLAXIS 3D Ultimate v22 Update 1 22.01.00.452 [Size: 2.2 GB] ... PLAXIS is geotechnical analysis software with capabilities to solve common and complex geotechnical problems in soil and rock, including advanced analysis for excavations, foundations, tunnels, and other infrastructure projects.

Proven 3D Geotechnical Analysis: Trust the 3D geotechnical analysis that has proven to be robust and reliable in settlement, stress, and safety analysis for more than 25 years.

Comprehensive Soil Material Library: Use a comprehensive soil material library to accurately model the behavior of more than 40 materials, ranging from soft soil to hard rock.

Complex Dynamic Analysis: Conduct dynamic analysis to analyze the effects of man-made or natural seismic vibration in soil or structures.

Igor Griva, Stephen G. Nash, Ariela Sofer ... 764 pages - Publisher: Society for Industrial Mathematics; 2nd edition (December, 2008) ... Language: English - ISBN-10: 0898716616 - ISBN-13: 978-0898716610.

This book introduces the applications, theory, and algorithms of linear and nonlinear optimization, with an emphasis on the practical aspects of the material. Its unique modular structure provides flexibility to accommodate the varying needs of instructors, students, and practitioners with different levels of sophistication in these topics. The succinct style of this second edition is punctuated with numerous real-life examples and exercises, and the authors include accessible explanations of topics that are not often mentioned in textbooks, such as duality in nonlinear optimization, primal-dual methods for nonlinear optimization, filter methods, and applications such as support-vector machines. Part I of Linear and Nonlinear Optimization, Second Edition provides fundamentals that can be taught in whole or in part at the beginning of a course on either topic and then referred to as needed. Part II on linear programming and Part III on unconstrained optimization can be used together or separately, and Part IV on nonlinear optimization can be taught without having studied the material in Part II. In the preface the authors suggest course outlines that can be adjusted to the requirements of a particular course on both linear and nonlinear optimization, or to separate courses on these topics. Three appendices provide information on linear algebra, other fundamentals, and software packages for optimization problems. A supplemental website offers auxiliary data sets that are necessary for some of the exercises.

Audience: This book is primarily intended for use in linear and nonlinear optimization courses for advanced undergraduate and graduate students. It is also appropriate as a tutorial for researchers and practitioners who need to understand the modern algorithms of linear and nonlinear optimization to apply them to problems in science and engineering. Contents: Preface; Part I: Basics; Chapter 1: Optimization Models; Chapter 2: Fundamentals of Optimization; Chapter 3: Representation of Linear Constraints; Part II: Linear Programming; Chapter 4: Geometry of Linear Programming; Chapter 5: The Simplex Method; Chapter 6: Duality and Sensitivity; Chapter 7: Enhancements of the Simplex Method; Chapter 8: Network Problems; Chapter 9: Computational Complexity of Linear Programming; Chapter 10: Interior-Point Methods of Linear Programming; Part III: Unconstrained Optimization; Chapter 11: Basics of Unconstrained Optimization; Chapter 12: Methods for Unconstrained Optimization; Chapter 13: Low-Storage Methods for Unconstrained Problems; Part IV: Nonlinear Optimization; Chapter 14: Optimality Conditions for Constrained Problems; Chapter 15: Feasible-Point Methods; Chapter 16: Penalty and Barrier Methods; Part V: Appendices; Appendix A: Topics from Linear Algebra; Appendix B: Other Fundamentals; Appendix C: Software; Bibliography; Index