This book compiles solutions of linear theory of elasticity problems for isotropic and anisotropic bodies with sharp and rounded notches. It contains an overview of established and recent achievements, and presents the authors’ original solutions in the field considered with extensive discussion. The volume demonstrates through numerous, useful examples the effectiveness of singular integral equations for obtaining exact solutions of boundary problems of the theory of elasticity for bodies with cracks and notches. Incorporating analytical and numerical solutions of the problems of stress concentrations in solid bodies with crack-like defects, this volume is ideal for scientists and PhD students dealing with the problems of theory of elasticity and fracture mechanics.
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Bentley Systems Inc., the leading company dedicated to providing comprehensive software solutions for sustaining infrastructure, has released the 10.02.00.01 version SACS CONNECT Edition is software for the analysis and design of new and existing fixed offshore oil and gas structures and wind farm structures.
SACS supports wave, wind, and earthquake dynamic response analysis; special high-end analysis for severe accidental loadings such as dynamic blast, ship impact, and structural collapse; and fatigue evaluations on jacket structures, foundations, and topside. It also provides designers and operators of wind farms with coupled analysis of the entire turbine structures via tight integration with GH Bladed software.
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Product: SACS
Version: CONNECT Edition Update 2 (build 10.02.00.01)
Supported Architectures: 32bit / 64bit
Language: english
System Requirements: PC
Supported Operating Systems: Windows 7even / 8.x / 10
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Article/eBook Full Name:Short Course in Geology for Civil Engineers Author(s):M. Matthews,N. Simons,B.Menzies. Publish Date:2008 Publisher:Thomas Telford Publishing ISBN-13:978-0727733504 Related Links:
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Article/eBook Full Name:Structural Geology and Rock Engineering Author(s):John W Cosgrove, John A Hudson Publish Date:2016 Published By:Imperial College Press ISBN-13:978-1783269563 Related Links:
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Bentley Systems Inc., the leading company dedicated to providing comprehensive software solutions for sustaining infrastructure, has released the 10.00.00.40 version WaterCAD CONNECT Edition is an easy-to-use hydraulic and water quality modeling application for water distribution systems. Utilities, municipalities, and engineering fi rms trust WaterCAD as a reliable, resourcesaving, decision-support tool for their water infrastructure.
Utilities and engineering firms around the world trust WaterCAD as a reliable decision-support tool for their infrastructure. Design new water systems and manage existing water networks effectively to reduce disruption risks and energy use. WaterCAD’s ease-of-use helps you successfully plan, design, and operate water distribution systems:
- Increase capacity to adequate service levels.
- Supply clean potable water without interruption.
- Deliver high quality designs cost effectively.
WaterCAD helps you improve design productivity, with:
- Streamlined model building: Leverage and import virtually any external data format to jumpstart the model accurately, easily allocate water demands, and automate terrain extraction and node allocation.
- Organized assessment of alternatives: Assess and compare an unlimited number of physical, design, water demand, network topology, and operational scenarios.
- CAD interoperability: Model in a familiar platform, leveraging CAD tools and shortcuts when using WaterCAD from within MicroStation or AutoCAD. You can also choose to use WaterCAD as a stand-alone application, for additional flexibility.
WaterCAD is a subset of WaterGEMS. Use WaterGEMS to also run your model from within ArcGIS and for optimization modules (calibration, design, pump scheduling, pipe assessment, SCADA integration, and network simplification).
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Bentley Systems Inc., the leading company dedicated to providing comprehensive software solutions for sustaining infrastructure, has released the 10.00.00.40 version HAMMER CONNECT Edition. This software demystifies the complex science of water hammer and transient analysis and puts the power to perform this critical work in your hands.
Every time a pump or valve is operated, potentially dangerous transients are introduced in your water distribution or wastewater system. Unchecked, transients can have catastrophic consequences on your pipes and equipment, operators, and customers.
Water utilities, municipalities, and engineering firms around the world trust HAMMER’s computationally rigorous engine and easy-to-use interface to efficiently identify, manage, and mitigate the risks associated with transients.
Identify critical points in the system that need protection and facilitate sound system design with HAMMER modeling tools:
- Focus on mitigating surge, not on the modeling process: Streamlined model building and management enables you to jump-start the model building process and manage your model effectively, so that you can focus on developing the most appropriate strategy for controlling and limiting hydraulic transients.
- Simulate transient precisely to improve the quality of your decisions: Decrease the risk of approximating the behavior of protective devices and rotating equipment. Rough estimation of transients can be too costly. HAMMER helps you accurately simulate the impact of a wide range of surge protection devices and rotating equipment (pumps and turbines).
- Leverage existing CAD and GIS data for improved design productivity and to enrich the system or model that utility personnel rely on.
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This study proposes a seismic design optimization method for steel building frameworks following the capacity design principle. Currently, when a structural design employs an elastic analysis to evaluate structural demands, the analysis results can be used only for the design of fuse members, and the inelastic demands on non-fuse members have to be obtained by hand calculations. Also, the elastic-analysis-based design method is unable to warrant a fully valid seismic design since the evaluation tool cannot always capture the true inelastic behaviour of a structure. The proposed method is to overcome these shortcomings by adopting the most sophisticated nonlinear dynamic procedure, i.e., Nonlinear Time- (or Response-) History Analysis as the evaluation tool for seismic demands.
The proposed optimal design formulation includes three objectives: the minimum weight or cost of the seismic force resisting system, the minimum seismic input energy or potential earthquake damage and the maximum hysteretic energy ratio of fuse members. The explicit design constraints include the plastic rotation limits on individual frame members and the inter-story drift limits on the overall performance of the structure. Strength designs of each member are treated as implicit constraints through considering both geometric and material nonlinearities of the structure in the nonlinear dynamic analysis procedure. A multi-objective Genetic Algorithm is employed to search for the Pareto-optimal solutions.
The study provides design examples for moment resisting frames and eccentrically braced frames. In the examples some numerical strategies, such as integrating load and resistance factors in analysis, grouping design variables of a link and the beams outside the link, roundingoff the objective function values, are introduced. The design examples confirm that the proposed optimization formulation is able to conduct automated capacity design of steel frames. In particular, the third objective, to maximize the hysteretic energy ratio of fuse members, drives the optimization algorithm to search for design solutions with favorable plastic mechanisms, which is the essence of the capacity design principle.
For the proposed inelastic-analysis-based design method, the seismic performance factors (i.e., ductility- and overstrength-related force reduction factors) are no longer needed. Furthermore, problem-dependent capacity design requirements, such as strong-column-weak-beam for moment resisting frames, are not included in the design formulation. Thus, the proposed design method is general and applicable to various types of building frames.
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