EXPERIMENTAL DESIGN OF A SPATIAL LATTICE METAL STRUCTURE FOR COVERING AN INDUSTRIAL BUILDING

2017 ◽  
Vol 7 (4) ◽  
pp. 4-8
Author(s):  
Vadim Yu. ALPATOV ◽  
Alexey V. SOLOVYOV
Keyword(s):  
Experimental Design ◽  
Three Dimensional ◽  
Metal Structure ◽  
Industrial Building ◽  
Technical Solution ◽  
Design Work ◽  
Future Design ◽  
Spatial Lattice ◽  
Production Building ◽  
Coating Design

The article presents information on the development of a new technical solution for the spatially-barrel construction of the covering. The authors propose a metal three-dimensional lattice construction, assembled from corner sections using sheet shapes in knots. On the proposed solution the authors obtained a patent. To prove the validity of the previously stated assumptions about the properties of the future design, namely its reliability and safety, the authors carried out experimental design work. The proposed coating design was designed, manufactured and applied as a covering for a production building. After the installation of the roof experimental design tests were carried out by design load. The load was simulated by loading the cover with sandbags. During the tests the stresses were measured in the most important rods. The results of the measurements showed compliance with the calculated forecasts.

scholarly journals INSTALLATION FEATURES OF SPATIAL LATTICE METAL COVERING OF A PRODUCTION BUILDING IN LIMITED SPACE CONDITIONS

2019 ◽  
Vol 9 (4) ◽  
pp. 74-81
Author(s):  
Yury I. DOLADOV ◽  
Marina A. ZORINA ◽  
Irina V. KHABUR ◽  
Ekaterina N. BOKAREVA ◽  
Daria A. DODONOVA
Keyword(s):  
Spatial Structure ◽  
Feasibility Study ◽  
Working Conditions ◽  
Industrial Building ◽  
Construction Site ◽  
Technological Feature ◽  
Spatial Lattice ◽  
Production Building ◽  
Individual Design ◽  
Space Conditions

A version of the project for the installation of the spatial structure of the coating of an industrial building was developed. The technological feature of the project was the presence of cramped working conditions. The feasibility study of the methods of assembly and installation of the coating, taking into account the peculiarities of the construction of the coating, the features of the construction site and the needs for lifting machines, showed the eff ectiveness of the installation of the coating with enlarged blocks assembled on the ground. Mounting the unit using a traverse allowed to reduce the estimated height of the hook and select a crane that does not diff er in the high cost of rent. It became possible to apply the adopted installation scheme provided that an individual design of the beam was developed. The calculation and design of the traverse itself was performed, as well as the calculation of the enlarged unit for the installation situation.

An acoustic liner design methodology based on a statistical source model

2021 ◽  
pp. 1475472X2110238
Author(s):  
Douglas M Nark ◽  
Michael G Jones
Keyword(s):  
Design Methodology ◽  
Three Dimensional ◽  
Aircraft Engine ◽  
Flight Test ◽  
Source Model ◽  
Practical Implementation ◽  
Source Information ◽  
Fan Noise ◽  
Future Design ◽  
Acoustic Liner

The attenuation of fan tones remains an important aspect of fan noise reduction for high bypass ratio turbofan engines. However, as fan design considerations have evolved, the simultaneous reduction of broadband fan noise levels has gained interest. Advanced manufacturing techniques have also opened new possibilities for the practical implementation of broadband liner concepts. To effectively address these elements, practical acoustic liner design methodologies must provide the capability to efficiently predict the acoustic benefits of novel liner configurations. This paper describes such a methodology to design and evaluate multiple candidate liner configurations using realistic, three dimensional geometries for which minimal source information is available. The development of the design methodology has been guided by a series of studies culminating in the design and flight test of a low drag, broadband inlet liner. The excellent component and system noise benefits obtained in this test demonstrate the effectiveness of the broadband liner design process. They also illustrate the value of the approach in concurrently evaluating multiple liner designs and their application to various locations within the aircraft engine nacelle. Thus, the design methodology may be utilized with increased confidence to investigate novel liner configurations in future design studies.

Economical design for long-span soil – metal structures

1996 ◽  
Vol 23 (4) ◽  
pp. 838-849 ◽  
Author(s):  
Hesham Mohammed ◽  
John B. Kennedy
Keyword(s):  
Dimensional Analysis ◽  
Structural Engineering ◽  
Three Dimensional ◽  
Metal Structure ◽  
Reinforced Soil ◽  
Soil System ◽  
Metal Structures ◽  
Long Span ◽  
Economical Design ◽  
Soil Metal

Soil – metal structures consisting of metal conduits covered with soil have been used extensively for short-span bridges. Recently, some designers ventured into utilizing them for longer spans with shallow soil cover which has led to some failures. Long-span soil – metal structures are often designed with transverse stiffeners attached to the metal structure. Another approach is the use of a reinforced-soil system in which the surrounding soil is reinforced and the metal conduit is tied into the soil. In this paper, a three-dimensional analysis of long-span soil – metal structures is carried out using these two approaches. The analysis is verified and substantiated by results from laboratory models. The structural responses from the two designs show that the latter design approach leads to a more economical structure. A design example based on the Cheese Factory Bridge built in Ontario in 1984 is presented. Key words: bridges, design, long span, reinforced soil, soil – metal structures, structural engineering, three-dimensional analysis.

scholarly journals International Perspectives on Designing Professional Practice Doctorates Book Review

2018 ◽  
Vol 3 (1) ◽  
Author(s):  
Jacqueline Hawkins
Keyword(s):  
Professional Practice ◽  
Global Perspective ◽  
Design Work ◽  
Education Doctorate ◽  
Future Design ◽  
International Perspectives

This review demonstrates how Dr. Valerie Storey and her colleagues have helped to enlighten the activities of CPED member institutions by providing a global perspective on the EdD.  Discussion links the various facets of the book to historical, structural, operational, and evaluative aspects of our future design work.  Takeaways from the review are provided for those of us who are leading the reclamation and transformation of the education doctorate.

scholarly journals PARAMETRIC DESIGN OF DELTA ROBOT

2016 ◽  
Vol 4 ◽  
pp. 803-806 ◽  
Author(s):  
Mert Gürgen ◽  
Cenk Eryılmaz ◽  
Vasfi Emre Ömürlü
Keyword(s):  
Computer Aided Design ◽  
Parametric Design ◽  
Three Dimensional ◽  
Theoretical Data ◽  
Technical Solution ◽  
3D Cad ◽  
3D Data ◽  
Kinematic Behavior ◽  
Delta Robot ◽  
Aided Design

This article describes a sophisticated determination and presentation of a workspace volume for a delta robot, with consideration of its kinematic behavior. With the help of theoretical equations, optimization is performed with the aid of the stiffness and dexterity analysis. Theoretical substructure is coded in Matlab and three-dimensional (3D) data for delta robot are developed in computer-aided design (CAD) environment. In later stages of the project, both 3D and theoretical data are linked together and thus, with the changing design parameter of the robot itself, the Solidworks CAD output adapts and regenerates output with a new set of parameters. To achieve an optimum workspace volume with predefined parameters, a different set of robot parameters are iterated through design optimization in Matlab, and the delta robot design is finalized and illustrated in the 3D CAD environment, Solidworks. This study provides a technical solution to accomplish a generic delta robot with optimized workspace volume.

scholarly journals Pengaruh Penggunaan Power Point Berbasis Animasi terhadap Hasil Belajar Siswa pada Materi Dimensi Tiga

2020 ◽  
Vol 1 (2) ◽  
pp. 75-82
Author(s):  
Salmun K. Nasib ◽  
Abas Kaluku ◽  
Abdul Wahab Abdullah
Keyword(s):  
Data Analysis ◽  
Experimental Design ◽  
Student Learning ◽  
Learning Outcomes ◽  
Descriptive Analysis ◽  
Three Dimensional ◽  
Sampling Technique ◽  
Student Learning Outcomes ◽  
Power Point ◽  
Cluster Random Sampling

This article discusses the use of PowerPoint animation in learning with the aim of knowing the differences in learning outcomes of students whose learning uses power points and without using power points in three-dimensional topics. The method used is an experimental design with a True Experimental Design, namely Posttest-Only Design. The sampling technique used cluster random sampling. Student learning outcomes data were obtained through the learning outcome test instrument in the form of essays. Data analysis using descriptive analysis techniques and inferential data analysis. Hypothesis testing using a parametric analysis t-test. The results of the analysis show that the average learning outcomes of students who are taught using power points are higher than those of students taught conventionally. One of the factors that support the improvement of student learning outcomes is a learning approach to geometric shapes that involves interesting visualization. Interesting visualization makes students not just imagine something abstract but can directly observe the object being studied.

Analysis of the Exit Flow Angle and Characteristics of Flow in Axial Turbine Cascades

2020 ◽  
Author(s):  
Narmin B. Hushmandi ◽  
Per Askebjer ◽  
Magnus Genrup
Keyword(s):  
Dimensional Analysis ◽  
Three Dimensional ◽  
Flow Coefficient ◽  
Reference Plane ◽  
Exit Angle ◽  
Design Work ◽  
Flow Angle ◽  
Axial Turbine ◽  
One Dimensional ◽  
The One

Abstract Despite a wealth of sophisticated CFD-methods, most designs are still based on one-dimensional and two-dimensional inviscid analytical tools. In such methods, realistic loss and angle assessment are indeed critical in order to arrive at correct loading, flow coefficient and reaction. The selected values are normally retained through the detailed design sequence for each iteration. This means that the throat sizing and hence the gauge angle is largely based on the early design work within the through-flow environment. Even one-degree error in angle estimation will turn into a rather large capacity error. For most designs, the exchange rate between capacity and gauge angle is on the order of 3–5 percent, per degree exit angle. In a previous publication, a methodology and equations were presented to assess the exit flow in an axial turbine blade row by Mamaev in Russian nomenclature and the tangential coordinate system. The approach, provided a unified and flow-physics based method for assessing exit angles from the geometry features like gauge angle, uncovered turning and flow features like Laval number, etc. Analysis of those formulas showed good agreement with physical flow pattern in real cascades for sub and transonic blade cascades. In this work, the same basic principal procedure is followed by employing the more international agreed nomenclature of blades such as an axial reference plane and Mach number. In the current work, the one-dimensional analysis results were compared with the three dimensional numerical modelling of a full annulus two-stage turbine. Analysis of the results showed the inherent unsteadiness specially outside the rotor blade cascades, however, comparison of the mass averaged exit angle with the one dimensional analysis showed satisfactory agreement.

scholarly journals The Flexiscope: a low cost, flexible, convertible and modular microscope with automated scanning and micromanipulation

2020 ◽  
Vol 7 (3) ◽  
pp. 191949 ◽  
Author(s):  
Amy Courtney ◽  
Luke M. Alvey ◽  
George O. T. Merces ◽  
Niamh Burke ◽  
Mark Pickering
Keyword(s):  
Experimental Design ◽  
High Performance ◽  
Low Cost ◽  
Three Dimensional ◽  
Cost Savings ◽  
Fluorescent Imaging ◽  
Multiple Roles ◽  
Flexible Work ◽  
Optical Components ◽  
Automated Scanning

With technologies rapidly evolving, many research institutions are now opting to invest in costly, high-quality, specialized microscopes which are shared by many researchers. As a consequence, the user may not have the ability to adapt a microscope to their specific needs and limitations in experimental design are introduced. A flexible work-horse microscopy system is a valuable tool in any laboratory to meet the diverse needs of a research team and promote innovation in experimental design. We have developed the Flexiscope; a multi-functional, adaptable, efficient and high-performance microscopy/electrophysiology system for everyday applications in a neurobiology laboratory. The core optical components are relatively constant in the three configurations described here: an upright configuration, an inverted configuration and an upright/electrophysiology configuration. We have provided a comprehensive description of the Flexiscope. We show that this method is capable of oblique infrared illumination imaging, multi-channel fluorescent imaging and automated three-dimensional scanning of larger specimens. Image quality is conserved across the three configurations of the microscope, and conversion between configurations is possible quickly and easily, while the motion control system can be repurposed to allow sub-micrometre computer-controlled micromanipulation. The Flexiscope provides similar performance and usability to commercially available systems. However, as it can be easily reconfigured for multiple roles, it can remove the need to purchase multiple microscopes, giving significant cost savings. The modular reconfigurable nature allows the user to customize the system to their specific needs and adapt/upgrade the system as challenges arise, without requiring specialized technical skills.

scholarly journals The three-dimensional lattice as an architectural space

2018 ◽  
Vol 212 ◽  
pp. 04005
Author(s):  
Andrey Bolshakov
Keyword(s):  
Three Dimensional ◽  
Human Movement ◽  
Theoretical Understanding ◽  
Architectural Space ◽  
Spatial Lattice ◽  
Spatial Grids ◽  
Relationship Of ◽  
The Relationship ◽  
Main Material

Space is the main material with which the architect works. The space organized by the means of architecture is an art environment for the life of society. With many aspects of the organization of space, which are studied in the literature, the problem of their assembly and integration remains unsolved. The paper proposes a method of assembling spatial representations in architecture-the correlation of the spatial lattice and the factors of its form-formation, considered in the system, i.e. together. The approach is that in a broad overview of the world architecture, both in its theory and in practice, from historical to modern, examples of modification of spatial grids under the influence of one or a group of dominant factors are revealed. As a result, provisions on the relationship of the geometry of spatial grids with the following factors have been revealed: publicity and privacy; architectonics, the influence of the lattice on the differentiation of the streams of human movement; the architecture’s ability to carry a message; navigation properties, evaluation of connectivity and centrality of places in the spatial lattice; evaluation of the quality of the composition through the identification of ways of order and randomness in the elements of the spatial lattice. The results of the work can be used both for theoretical understanding of the architectural space in the study and design of architecture, and in architectural education.

RadView: A Preliminary Approach to Visualizing Occupational Radiation

1994 ◽  
Vol 38 (15) ◽  
pp. 947-947
Author(s):  
Douglas G. Hoecker ◽  
Timothy M. Lloyd ◽  
Harry Plantinga
Keyword(s):  
Power Plant ◽  
Nuclear Power ◽  
Three Dimensional ◽  
Technical Solution ◽  
Multiple Sources ◽  
Work Location ◽  
Cluttered Environment ◽  
The Core ◽  
Core Problem ◽  
Occupational Radiation

Visualizing three-dimensional distributions of radiation intensity, summed from multiple sources at a given work location inside a nuclear power plant, is a topic of interest to several prospective classes of worker in these plants. RadView is a concept for visualizing radiation that can be adapted to different users' applications once the core problem has been solved: how to effectively display this normally invisible phenomenon, while superposing the displayed data on the visually-cluttered environment that is typical of many work scenes. This demonstration presents the results of a preliminary feasibility study. At this stage, die results help more to clarify the problem than to propose a technical solution.

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