Publisher: DET NORSKE VERITAS
Pages: 124
Date: APRIL 2007
This new Recommended Practice (RP) gives guidance for modelling, analysis and prediction of environmental conditions as well guidance for calculating environmental loads acting on structures. The loads are limited to those due to wind, wave and current. The RP is based on state of the art within modelling and analysis of environmental conditions and loads and technical developments in recent R&D projects, as well as design experience from recent and ongoing projects .
The basic principles applied in this RP are in agreement with the most recognized rules and reflect industry practice and latest research.
CONTENTS
1. GENERAL
2. WIND CONDITIONS
3. WAVE CONDITIONS
4. CURRENT AND TIDE CONDITIONS
5. WIND LOADS
6. WAVE AND CURRENT INDUCED LOADS ON SLENDER MEMBERS
7. WAVE AND CURRENT INDUCED LOADS ON LARGE VOLUME STRUCTURES
8. AIR GAP AND WAVE SLAMMING
9. VORTEX INDUCED OSCILLATIONS
10. HYDRODYNAMIC MODEL TESTING
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This report was prepared for Headquarters, U.S. Army Corps of Engineers (HQUSACE), as part of the Innovations for Navigation Projects (INP) Research Program. The study was conducted under INP Work Unit 33144, “State of the Art for Preparing Foundations Underwater,” managed at the U.S. Army Engineer Research and Development Center (ERDC), Vicksburg, MS.
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University of Notre Dame has a very good website for wind engineering especially the wind simulator.
The wind time history generated are base on ASCE 7 with Kaimal's spectral formula.
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Meshfree Methods for Partial Differential Equations V
Meshfree Methods for Partial Differential Equations V (Lecture Notes in Computational Science and Engineering)
By Michael Griebel, Marc Alexander Schweitzer
Publisher: Springer
Number Of Pages: 250
Publication Date: 2010-11-25
ISBN-10 / ASIN: 3642162282
ISBN-13 / EAN: 9783642162282
The numerical treatment of partial differential equations with particle methods and meshfree discretization techniques is an extremely active research field, both in the mathematics and engineering communities. Meshfree methods are becoming increasingly mainstream in various applications. Due to their independence of a mesh, particle schemes and meshfree methods can deal with large geometric changes of the domain more easily than classical discretization techniques. Furthermore, meshfree methods offer a promising approach for the coupling of particle models to continuous models. This volume of LNCSE is a collection of the papers from the proceedings of the Fifth International Workshop on Meshfree Methods, held in Bonn in August 2009. The articles address the different meshfree methods and their use in applied mathematics, physics and engineering. The volume is intended to foster this highly active and exciting area of interdisciplinary research and to present recent advances and findings in this field.
Table of Contents
Preface
Contents
Global-local Petrov-Galerkin formulations in the Meshless Finite Difference Method
1 Introduction
2 Boundary value problem formulations
3 Meshless local Petrov-Galerkin formulations
4 Meshless local Petrov-Galerkin 5 (MLPG5) formulation
5 Basic Meshless Finite Difference Method solution approach
6 Combination of the MFDM and MLPG5
7 Higher order approximation based on correction terms
8 A-posteriori error analysis
9 Adaptive solution approach
10 Error indicators
11 HO MFDM / MLPG5 approach in 1D
12 HO MFDM / MLPG5 approach in 2D
13 Extensions of the MFDM / MLPG5 solution approach
14 The MFDM / MLPG7 approach
15 Numerical examples
16 Final remarks
References
Treatment of general domains in two space dimensions in a Partition of Unity Method
1 Introduction
2 Particle--Partition of Unity Method
2.1 Numerical Integration
3 Realization on General Domains
3.1 Domain Representation
3.2 Clipping a curved multiply connected domain
3.3 Decomposition and parametrization
3.4 Rectangle-NURBS clipping
4 Numerical Experiments
5 Concluding Remarks
References
Sampling Inequalities and Support Vector Machines for Galerkin Type Data
1 Introduction
2 Review on sampling inequalities
2.1 Proof Sketch
3 Sampling Inequalities based on Weak Formulations
3.1 Sampling inequalities based on Pythagoras law
4 Regularization and Machine Learning
References
Meshfree Vectorial Interpolation Based on the Generalized Stokes Problem
1 Introduction
2 Vectorial interpolation
2.1 Divergence-free interpolation based on the stream function
2.2 Multi-elliptic interpolation, scalar problems
3 Multi-elliptic divergence-free interpolation, vectorial problems
3.1 The generalized Stokes problem
4 Solution techniques
4.1 Uzawa's method
4.2 The method of fundamental solutions
5 Summary and conclusions
References
Pressure XFEM for two-phase incompressible flows with application to 3D droplet problems
1 Introduction
2 Mathematical model
3 Numerical methods
3.1 Overview of numerical methods
3.2 Pressure XFEM space
4 Analysis of pressure XFEM space
4.1 Approximation order of pressure XFEM space
4.2 Stabilization of XFEM basis
5 Numerical experiment
References
Special-relativistic Smoothed Particle Hydrodynamics: a benchmark suite
1 Introduction
2 Relativistic SPH equations from a variational principle
3 Artificial dissipation
4 Test bench
4.1 Test 1: Riemann problem 1
4.2 Test 2: Riemann problem 2
4.3 Test 3: Riemann problem 3
4.4 Test 4: Sinusoidally perturbed Riemann problem
4.5 Test 5: Relativistic Einfeldt rarefaction test
4.6 Test 6: Ultra-relativistic advection
5 Conclusions
References
An exact particle method for scalar conservation laws and its application to stiff reaction kinetics
1 Introduction
2 Characteristic Particles and Similarity Solution Interpolant
3 Shock Particles
3.1 Evolution of Shock Particles
3.2 Interaction of Shock Particles
4 An ``Exact'' ODE Based Method
4.1 Approximation of the Initial Conditions
4.2 Integration in Time
5 Numerical Error Analysis of the Particle Method
6 Stiff Reaction Kinetics
7 A Particle Method for Stiff Reaction Kinetics
7.1 Computational Approach
8 Numerical Results on Reaction Kinetics
9 Conclusions and Outlook
References
Application of Smoothed Particle Hydrodynamics to Structure Formation in Chemical Engineering
1 Introduction
2 Smoothed Particle Hydrodynamics Method
2.1 Governing equations
2.2 Smoothed Particle Hydrodynamics
3 Validation of Single Processes
4 Simulation of the overall process
5 Conclusion and Outlook
6 Acknowledgments
References
Numerical validation of a constraints-based multiscale simulation method for solids
1 Introduction
2 Coupling with projection-based constraints
2.1 Molecular Dynamics
2.2 Multiscale Coupling
2.3 A method for weak coupling conditions
2.4 Damping in zero-temperature simulations
3 Numerical Validation
3.1 Comparison with pointwise constraints
3.2 Energy and reflection measurements
3.3 Mode-I fracture simulation
4 Conclusion
References
Coupling of the Navier-Stokes and the Boltzmann equations with a meshfree particle and kinetic particle methods for a micro cavity
1 Introduction
2 Governing equations
3 Numerical methods
3.1 Particle Method for the Boltzmann equation
3.2 Meshfree particle method for the Navier-Stokes equations
4 Hybrid method
4.1 Adaptive grid refinement
4.2 Selection of time steps
4.3 Coupling condition
4.4 Coupling Algorithm
5 Numerical examples
5.1 CPU time
6 Conclusion
References
Accuracy and Robustness of Kinetic Meshfree Method
1 Introduction
2 Least Squares Meshfree Method
3 Method of calculation of Weights in 2-D
4 Higher Order Accuracy in meshfree methods
5 Kinetic Meshfree Method for Euler Equations
6 Higher order accuracy by combining Defect Correction with Entropy Variables (q-LSKUM)
7 Results and Discussion
8 Conclusion
References
Kinetic meshless methods for unsteady moving boundaries
1 Introduction
2 Least Squares Kinetic Upwind Method on Moving Nodes
3 Formulation of LSKUM_MN
4 Advantages of LSKUM_MN
5 Results and Discussion
5.1 Turbomachinery cascades
5.2 Store separation
6 Conclusions
7 Acknowledgements
References
Efficient cloud refinement for kinetic meshless methods
1 Introduction
2 LSKUM: a meshfree solver
3 Adaptive Cloud Refinement (ACR)
4 Automatic Connectivity Update(ACU)
5 Results and Discussions
5.1 Transonic test case NACA0012
5.2 Supersonic test case NACA0012
5.3 Subsonic test case NACA0012
6 Conclusions
7 Acknowledgements
References
Fast exact evaluation of particle interaction vectors in the finite volume particle method
1 Introduction
2 The Finite Volume Particle Method
2.1 Derivation and properties
2.2 The particle interaction vectors
2.3 Boundary conditions
3 A new choice for the particle weight function
4 Implementation
5 Validation
6 Application to free surface flow
7 Conclusions
References
Parallel summation of symmetric inter-particle forces in smoothed particle hydrodynamics
1 Introduction
2 Implementation of smoothed particle hydrodynamics
3 Symmetric inter-particle forces on a grid of cells
4 Parallel symmetric summation algorithm
5 Experimental results
6 Conclusion
References
Meshfree Wavelet-Galerkin Method for Steady-State Analysis of Nonlinear Microwave Circuits
1 Introduction
2 Wavelet-Galerkin method
2.1 Bubnov-Galerkin projection method
2.2 Haar-wavelets basis
3 Meshfree Wavelet-Galerkin Method
3.1 The network equations formulation
3.2 Solution of the linear subnetwork
3.3 Solution of the nonlinear subnetwork
4 Solution of the network equations
5 Illustrative examples
5.1 Simulation results of the Broadband amplifier
5.2 Simulation results of the Schmitt-Trigger circuit
6 Conclusions
References
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Meshfree Methods for Partial Differential Equations IV
Meshfree Methods for Partial Differential Equations IV (Lecture Notes in Computational Science and Engineering)
By Michael Griebel, Marc Alexander Schweitzer
Publisher: Springer
Number Of Pages: 412
Publication Date: 2008-11-01
ISBN-10 / ASIN: 3540799931
ISBN-13 / EAN: 9783540799931
Binding: Paperback
The numerical treatment of partial differential equations with particle methods and meshfree discretization techniques is a very active research field both in the mathematics and engineering community. Due to their independence of a mesh, particle schemes and meshfree methods can deal with large geometric changes of the domain more easily than classical discretization techniques. Furthermore, meshfree methods offer a promising approach for the coupling of particle models to continuous models. This volume of LNCSE is a collection of the proceedings papers of the Fourth International Workshop on Meshfree Methods held in September 2007 in Bonn. The articles address the different meshfree methods (SPH, PUM, GFEM, EFGM, RKPM, etc.) and their application in applied mathematics, physics and engineering. The volume is intended to foster this very active and exciting area of interdisciplinary research and to present recent advances and results in this field.
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Meshfree Methods for Partial Differential Equations III
Meshfree Methods for Partial Differential Equations III (Lecture Notes in Computational Science and Engineering)
By Michael Griebel, Marc A. Schweitzer (Editors)
Publisher: Springer
Number Of Pages: 312
Publication Date: 2006-11-16
ISBN-10 / ASIN: 3540462147
ISBN-13 / EAN: 9783540462149
Binding: Paperback
Meshfree methods for the numerical solution of partial differential equations are becoming more and more mainstream in many areas of applications. Their flexiblity and wide applicability are attracting engineers, scientists, and mathematicians to this very dynamic research area. This volume represents the state of the art in meshfree methods. It consists of articles which address the different meshfree techniques, their mathematical properties and their application in applied mathematics, physics and engineering.
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Meshfree Methods for Partial Differential Equations II
Meshfree Methods for Partial Differential Equations II (Lecture Notes in Computational Science and Engineering)
By Michael Griebel, Marc A. Schweitzer
Publisher: Springer
Number Of Pages: 303
Publication Date: 2005-01-12
ISBN-10 / ASIN: 3540230262
ISBN-13 / EAN: 9783540230267
Binding: Paperback
The numerical treatment of partial differential equations with particle methods and meshfree discretization techniques is a very active research field both in the mathematics and engineering community. Due to their independence of a mesh, particle schemes and meshfree methods can deal with large geometric changes of the domain more easily than classical discretization techniques. Furthermore, meshfree methods offer a promising approach for the coupling of particle models to continuous models. This volume of LNCSE is a collection of the papers from the proceedings of the Second International Workshop on Meshfree Methods held in September 2003 in Bonn. The articles address the different meshfree methods (SPH, PUM, GFEM, EFGM, RKPM, etc.) and their application in applied mathematics, physics and engineering. The volume is intended to foster this new and exciting area of interdisciplinary research and to present recent advances and results in this field.
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Evaluation of Settlements in Sands Due to Earthquake Shaking
K. Tokimatsu and H. B. Seed;
ASCE Journal of Geotechnical Engineering,
Vol. 113, No. 8,
August 1987
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Dear everyone,
Could you please share this book: Design of Highway Bridges: Based on AASHTO LRFD, Bridge Design Specifications: Richard M. Barker (Author), Jay A. Puckett (Author)
Thank you in advance.
Posted by: ir_71 - 11-17-2010, 05:54 AM - Forum: EN
- No Replies
EN 15870:2009 Adhesives - Determination of tensile strength of butt joints (ISO 6922:1987 modified)
This European Standard specifies a method for determining the bond strength of a butt joint when subjected
to tensile force. The method can be applied to all types of adhesives. Although primarily intended for use
under ambient conditions, the basic method can also be applied to testing under a wide range of temperature
and other environmental conditions. The method requires rigid adherends that can be produced to the
required dimensional tolerances and that will withstand the forces applied to them during the test.
:JC_cheers:
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Posted by: ir_71 - 11-17-2010, 05:49 AM - Forum: EN
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EN 14566:2008 Mechanical fasteners for gypsum plasterboard systems - Definitions, requirements and test methods
This European Standard specifies the characteristics and performance of mechanical fasteners, including nails, screws and staples, intended to be used for the fixing of gypsum plasterboard, gypsum boards with fibrous reinforcement, products from secondary processing and suitable ancillary products as shown in Figure 2, to timber and metal, as appropriate, in building construction works. The fasteners secure the board to the framing enabling its surface to be finished by jointing or plastering to receive decoration. They can also be used for the construction of the framing and for the connection between substructure and load bearing components and for fixing boards together. Mechanical fasteners contribute to the stability of the assembly.
This European Standard covers the following product performance characteristics: reaction to fire and flexural strength to be measured according to the corresponding European test methods.
It provides for the evaluation of conformity of the product to this European Standard.
This European Standard also covers the additional technical characteristics that are of importance for the use and acceptance of the products by the construction industry and the reference tests for these characteristics.
This European Standard does not cover nails, screws and staples intended for use with materials other than plasterboard and the plasterboard based products referred to above and their associated system components.
Dear friends, if someone of you have the annex to this standard from 2009, please share it.
:JC_cheers:
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Posted by: ir_71 - 11-17-2010, 05:44 AM - Forum: EN
- Replies (2)
EN 520:2004 Gypsum plasterboards - Definitions, requirements and test methods
This document specifies the characteristics and performance of gypsum plasterboards intended to be used in
building construction works including those intended for secondary manufacturing operations. It includes boards
designed to receive either direct surface decoration or gypsum plaster.
This document covers the following product performance characteristics: reaction to fire, water vapour permeability,
flexural strength (breaking load), impact resistance and thermal resistance.
The following performance characteristics are linked to systems assembled with plasterboards: shear strength, fire
resistance, impact resistance direct airborne sound insulation and acoustic absorption to be measured according to
the corresponding European test methods. If required, tests should be done on assembled systems simulating the
end use conditions.
This document covers also additional technical characteristics that are of importance for the use and acceptance of
the product by the Construction Industry and the reference tests for these characteristics.
It provides for the evaluation of conformity of the product to this document.
This document does not cover plasterboards, which have been subject to any secondary manufacturing operations
(e.g. insulating composite panels, plasterboards with thin lamination, etc.).
Dear friends, there is a new annex to this standard - from 2009, if someone of you have it - please share it.
:JC_cheers:
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Posted by: ir_71 - 11-17-2010, 05:38 AM - Forum: ISO
- Replies (3)
EN ISO 9047:2003 Building construction - Jointing products - Determination of adhesion/cohesion properties of sealants at variable temperatures (ISO 9047:2001)
This International Standard specifies a method for the determination of the adhesion/cohesion properties of sealants with predominantly elastic behaviour which are used in joints in building construction.
:JC_cheers:
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