scholarly journals Analysis of calculations when creating a theoretical drawing of a tug by the interpolation method

2021 ◽  
pp. 24-32
Author(s):  
Svetlana V. Davydova ◽  
Ivan V. Andriyanov Andriyanov
Keyword(s):  
Computer Aided Design ◽  
Software Package ◽  
Interpolation Method ◽  
Transformation Method ◽  
Design Work ◽  
Manual Methods ◽  
Modular Method ◽  
Aided Design ◽  
Design And Methods ◽  
Classical Interpolation

The development of a theoretical drawing by manual methods is notable for considerable laboriousness, in this regard, the use of methods that significantly reduce the development time and increase its quality is relevant. In this work, a comparative analysis of methods for obtaining ordinates of a theoretical drawing is carried out. The existing methods of computer-aided design and methods of forming a theoretical drawing are considered: classical, interpolation, affine transformation method, modular method. The process of development of the surface of the tug by the interpolation method is shown, the substantiation of its application is carried out. On the basis of the developed model, a program for calculating the ordinates of the theoretical drawing of tugboats was developed. The results of the software package operation are presented, namely, the ordinates of the theoretical drawing of the tugboat and the hull of the theoretical drawing, as well as the analysis of the calculation accuracy. The adopted approach to the development of the ship's surface can significantly reduce the time and cost of design work on the development of the ship's surface, can be used for its further automation and use as scientific, industrial and educational purposes.

Introductory remarks

1971 ◽  
Vol 321 (1545) ◽  
pp. 145-146
Keyword(s):  
Engineering Design ◽  
Computer Aided Design ◽  
Mechanical Engineering ◽  
Future Research ◽  
Design Work ◽  
Computer Aided ◽  
Hidden Line ◽  
Multi Access ◽  
Aided Design ◽  
Design And Manufacture

From time to time the Royal Society organizes meetings for the discussion of some new development in engineering and applied science. It seemed possible to the organizers of this meeting that it would be profitable to bring together workers in industry and in the universities to discuss some aspect of computer-aided design. As you will see we have chosen the application of computer aids to mechanical engineering design and manufacture. This restriction to mechanical engineering was deliberate, partly because the application of computer aids to mechanical engineering design is somewhat behind similar activities in electrical and civil engineering. Another reason is that the development of such applications has reached a particularly interesting stage, and it is now perhaps appropriate to review progress and to discuss the directions in which future research should proceed. Although some examples of computer-aided design in mechanical engineering can be found from the earliest days of computing, the development really started in the late fifties with early experiments in the use of graphic displays and with the introduction of multi-access computing. Some may date the beginning of the developments which we are going to discuss today, from the work at M. I. T. on automated programmed drawing started in 1958. This has led to a concentration of effort on graphics and computer-aided drafting. Much research has been done on the mathematical description of curves, surfaces and volumes in a form suitable for engineering design. Work has been done on the automatic dimensioning of drawings, hidden line removal, the prob­lems of lofting, etc.

scholarly journals AUTOMATION OF THE PROCESS OF ENSURING THE CONFORMITY OF THE OBJECT TO THE “GREEN” CONSTRUCTION STANDARDS

2019 ◽  
Vol 46 (1) ◽  
pp. 132-141
Author(s):  
R. A. Zherugov ◽  
M. H. Kangezova ◽  
A. A. Lapidus
Keyword(s):  
Computer Aided Design ◽  
Software Package ◽  
Green Building ◽  
Environmental Certification ◽  
Software Complex ◽  
Green Construction ◽  
Software Product ◽  
Under Construction ◽  
Aided Design ◽  
The Impact

Objectives. Solving the main tasks of designing construction objects in accordance with environmental standards is impossible without computer-aided design and database management systems. The article discusses a part of the software package that will automate the process of ensuring compliance of the object with the standards of "green" construction.Method. The basis of the project development is the criteria of the system of voluntary environmental certification of real estate objects, approved by the order of the Ministry of Natural Resources of Russia, as well as the criteria of LEED standards. For data analysis, the software complex MapInfo was used.Result. The structure of the software product has been developed, which will answer the main questions arising in the design of any building, taking into account the standards of green building. For each category the underlying factors (input data) are the corresponding data for each criterion.Conclusion. The developed software package will provide an opportunity to minimize the impact of a construction object on the environment and increase the energy efficiency of the object under construction. Also, improve the quality of organizational and technological decisions of the construction process, reduce the impact of the construction project on the environment and effectively use resources. Full implementation of the algorithm will make it possible to reduce the time and cost of designing buildings and structures, increase the accuracy of drawing details and structural elements, improve the quality and technical and economic level of the design results, and minimize the costs of manual modeling and testing.

scholarly journals Computer aided production process design work methods

Mechanik ◽  
2017 ◽  
Vol 90 (8-9) ◽  
pp. 805-807
Author(s):  
Izabela Rojek
Keyword(s):  
Neural Networks ◽  
Expert System ◽  
Production Process ◽  
Process Design ◽  
Computer Aided Design ◽  
Design Work ◽  
Production Processes ◽  
Computer Aided ◽  
Research Procedure ◽  
Aided Design

The article presents the computer aided design methods as applied for arrangement of production processes in the range from the simplest to the most advanced ones. The idea behind the research procedure as conducted by the author was to develop a method, models and expert system that would resemble a human expert in the field. This goal was achieved using neural networks.

scholarly journals Working Away

2014 ◽  
Vol 136 (01) ◽  
pp. 40-43 ◽  
Author(s):  
Jean Thilmany
Keyword(s):  
Mobile Applications ◽  
Computer Aided Design ◽  
Shop Floor ◽  
Design Work ◽  
Team Members ◽  
The Road ◽  
Access Information ◽  
On The Road ◽  
Aided Design ◽  
Personal Devices

This article discusses the evolving trend of mobile applications and their increasing use by engineers. With the help of mobile applications for smartphone and tablet, engineers are discovering innovative ways to work that don’t have them tied to their desks. Apps allow engineers to bring drawings with them while on the road, to collaborate with other engineers, and to access information on the shop floor or in the field. Due to the very nature of the mobile platform on which they sit, applications can’t be used at every job. Their adoption depends on the type of work, the work environment, and employees’ attitude. If enough employees do have their own personal devices, there are apps that let employers update employees on the shop floor or in the field. Many engineers use mobile applications to collaborate with their design-team members or to show others, like customers or suppliers, how a product will look or will function. Engineers can also share computer-aided design drawings, design work, spec sheets, and the like through the technology.

scholarly journals NURBS-Enhanced Meshfree Method with an Integration Subtraction Technique for Complex Topology

2020 ◽  
Vol 10 (7) ◽  
pp. 2587 ◽  
Author(s):  
Yunzhen Liu ◽  
Zhiqiang Wan ◽  
Chao Yang ◽  
Xiaozhe Wang
Keyword(s):  
Computer Aided Design ◽  
Interpolation Method ◽  
Meshfree Method ◽  
Subtraction Technique ◽  
Good Efficiency ◽  
Linear Elastic ◽  
Complex Topology ◽  
Point Interpolation Method ◽  
Meshfree Analysis ◽  
Aided Design

In this paper, we present an integration subtraction technique to model holes interactively in a predesigned domain for adaptive problems. This technique involves two approaches, the normal subtraction technique and the moving subtraction technique. In the basic normal subtraction technique, the predesigned domain can be meshed using any methods as an initial integration background cell for meshfree analysis. Holes are described using closed non-uniform rational B-spline (NURBS) curves to preserve the exact computer-aided design (CAD) geometry and are meshed alone using the homotopic method, so they can easily be subtracted from the predesigned domain with no refinement. On the other hand, when the hole size is varying, the moving subtraction technique, in which only the changing part between the new and old boundaries needs to be integrated and subtracted, is more efficient. Compared with the standard radial point interpolation method (RPIM) and finite element method (FEM) in three linear elastic examples with different holes, the excellent accuracy and good efficiency of the proposed method are demonstrated, and its feasibility in complex topology problems is verified.

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