Force calculation methods for welded-pipe expanding

2018 ◽  
pp. 19-25
Author(s):  
I. V. Tsvetkov ◽  
Keyword(s):  
Calculation Methods ◽  
Welded Pipe ◽  
Force Calculation

Calculation and Analysis Techniques of Foundation Pit Engineering Based on FLAC3D

2012 ◽  
Vol 424-425 ◽  
pp. 355-358
Author(s):  
Yu Liang Qiu ◽  
Xiao Yong Hu ◽  
Zhu Wang ◽  
Ming Yi Zhou
Keyword(s):  
Three Dimensional ◽  
Deep Excavation ◽  
Calculation Methods ◽  
Foundation Design ◽  
Foundation Pit ◽  
Analysis Techniques ◽  
Scientific Analysis ◽  
Stratigraphic Model ◽  
Section Design ◽  
Force Calculation

Two-dimensional and three-dimensional calculation methods of deep excavation, and section design programs were developed to meet the needs of foundation design and calculation with the Three-dimensional finite difference software FLAC3D. Force calculation, section design and stability analysis, and force diagram generation of support structure can be done in accordance with the requirements of different specifications by the programs. A meshing method is developed for arbitrary planar domain, and the three-dimensional stratigraphic model is established. Considering the interaction between soil and structure, the force and deformation of supporting structure and ground settlement can be accurately calculated. The results can provide a useful assistance for design and can also be used as the basis for scientific analysis

scholarly journals Numerical modeling of a MEMS actuator considering several magnetic force calculation methods

2011 ◽  
Vol 30 (4) ◽  
pp. 1176-1188 ◽  
Author(s):  
Thomas Preisner ◽  
Christian Bolzmacher ◽  
Andreas Gerber ◽  
Karin Bauer ◽  
Eckhard Quandt ◽  
...  
Keyword(s):  
Numerical Modeling ◽  
Magnetic Force ◽  
Calculation Methods ◽  
Force Calculation

scholarly journals LIFT AND DRAG FORCE CALCULATION METHODS USING NON‐LINEAR SECTION DATA. HISTORY AND RECENT RESEARCH

Aviation ◽  
2004 ◽  
Vol 8 (2) ◽  
pp. 9-13 ◽  
Author(s):  
Egidijus Pakalnis
Keyword(s):  
Calculation Methods ◽  
Linear Section ◽  
Section Data ◽  
Non Linear ◽  
Line Theory ◽  
Data History ◽  
Lift And Drag ◽  
Force Calculation ◽  
Lifting Line ◽  
Lifting Line Theory

In this article history and development of calculation methods of wing characteristics are presented. The development process includes the beginning in 1918 by Prandtl's classical lifting line theory and leads to resent research. The most attention is paid to non‐linear section data implementation methods in the calculation of finite span wing. The research of Philips and Snyder, Barnes, and Sivells and Neely is discussed.

scholarly journals Berechnung der auftretenden lokalen Kräfte auf der magnetischen Beschichtung eines magnetischen Rasterkraftmikroskops

2009 ◽  
Vol 7 ◽  
pp. 37-41 ◽  
Author(s):  
T. Preisner ◽  
W. Mathis
Keyword(s):  
Magnetic Field ◽  
Structural Analysis ◽  
Magnetic Force ◽  
Magnetic Interactions ◽  
Total Force ◽  
Magnetic Force Microscope ◽  
Calculation Methods ◽  
Interest In Research ◽  
Force Calculation ◽  
Magnetic Coating

Abstract. Die numerische Berechnung entstehender Kraftwirkungen auf Körper aufgrund magnetischer Wechselwirkungen zwischen diesen, ist in Bezug auf die mechanische Deformation dieser Körper ein noch nicht vollständig gelöstes Problem. In dieser Arbeit wird ein Vergleich vorhandener Kraftberechnungsmethoden hinsichtlich der totalen Kraft anhand eines analytisch berechenbaren Beispiels vorgestellt, sowie Unterschiede der lokalen Kraftdichten dieser Methoden in Anwendung auf die magnetische Beschichtung eines magnetischen Rasterkraftmikroskops aufgezeigt. Due to magnetic interactions between magnetic field inducing bodies, force effects occur on the materials. The numerical computation of those occuring forces with respect to a subsequent structural analysis of a deformable material is still a topic of interest in research. In this paper a comparison between several existent force calculation methods regarding the total force is given for an example with two magnetic cubes. Furthermore, differences are shown concerning the local force densities on the magnetic coating of a magnetic force microscope.

scholarly journals Preliminary Calculations for Minehunter's Genset Foundations

2019 ◽  
Vol 8 (1) ◽  
pp. 54-61
Author(s):  
Andrzej Grządziela ◽  
Marcin Kluczyk
Keyword(s):  
Underwater Explosion ◽  
Classification Rules ◽  
Calculation Methods ◽  
Foundation Design ◽  
Naval Vessel ◽  
Technical Data ◽  
Damping Effect ◽  
Calculation Results ◽  
Shock Resistance ◽  
Force Calculation

The requirements for the foundations of naval vessel engines are based on classification rules devised by classification societies or/and military standardization rules. A class guideline was published, defining the requirements, acceptance criteria and machinery seating methods. There is also a schedule of basic calculation procedures for cast resin or rubber chocks which facilitates the process of machinery foundation design, preloading force calculation, the establishment of boundary conditions etc. In case of naval vessels, typical procedures do not meet tactical requirements due to potential explosion loads. Since minehunters are mainly deployed at sea, handling active, naval mines, the shock resistance calculation for the entire machinery, including the Genset, is required. The paper presents preliminary MatLab calculation methods which can be used to analyse the type, number and location of rubber or elastomer chocks. The procedure consists of input data such as UNDEX pressure and technical data of the Genset used in the Polish Navy. Calculation results include the analysis of the dynamic interaction between the Genset and the foundation, as well as the damping effect generated by the UNDEX (UNDerwater EXplosion) shock pulse.

Challenges of the Crisis: How to Measure Sustainable Development?

2015 ◽  
pp. 147-160 ◽  
Author(s):  
S. Bobylev ◽  
N. Zubarevich ◽  
S. Solovyeva
Keyword(s):  
Sustainable Development ◽  
World Bank ◽  
Environmental Indicators ◽  
Calculation Methods ◽  
Basic Principles ◽  
The Sustainable Development ◽  
Development Index ◽  
Development Indicators ◽  
Sustainable Development Indicators ◽  
Adjusted Net Savings

The article emphasizes the fact that traditional socio-economic indicators do not reflect the challenges of sustainable development adequately, and this is particularly true for the widely-used GDP indicator. In this connection the elaboration of sustainable development indicators is needed, taking into account economic, social and environmental factors. For Russia, adaptation and use of concepts and basic principles of calculation methods for adjusted net savings index (World Bank) and human development index (UNDP) as integral indicators can be promising. The authors have developed the sustainable development index for Russia, which aggregates and allows taking into account balanced economic, social and environmental indicators.

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