Design Calculation
Design calculation refers to the process of determining the dimensions, materials, and other specifications necessary for creating a functional and safe engineering design. It involves using mathematical and scientific principles to analyze and predict the behavior and performance of the designed system or component. These calculations are crucial for ensuring that the final design meets the required standards and functions as intended.
4 Key excerpts on "Design Calculation"
eBook - ePub- John A. Burgess(Author)
- 2020(Publication Date)
- CRC Press(Publisher)
...6 Design Methods and Analysis 6.1 Introduction 6.2 Design Methods 6.2.1 Engineering Procedures 6.2.2 Standard Design Methods 6.3 Design Analysis 6.3.1 Design Calculations 6.3.2 Calculation Records 6.3.3 Calculation Verification 6.3.4 Technical Reports 6.4 Design Integration 6.5 Summary 6.1 INTRODUCTION The design process is a combination of art and science, Developing a product which serves a useful function and packaging it in a manner which is both efficient and pleasing is an artform in itself. Yet scientific methods are required to assure the product makes effective use of materials, space, interactions among parts, and accomplishes this at a cost attractive to potential buyers. This aspect of design routinely requires mathematical analysis to determine the size and shape of parts to carry the required loads, operate for the prescribed life, withstand the environmental conditions, etc., in the course of fulfilling its intended functions. Some of the mathematical analysis may be simple, others may be very complex. Yet the principles for assuring the quality of design over the full range of extremes is essentially the same. Certain information should be defined, applied, recorded and verified for all types of calculations. This chapter discusses these basic elements and presents recommended practices for implementation. In addition to the mathematical aspects of design, there is another area where the orderly, logical approach of science can contribute to the design assurance process. That is in the development and use of engineering procedures and standard practices. These are tools for defining the preferred way for accomplishing the tasks assigned to the engineering organization. In a one-man engineering department the methods may be informal and simply committed to memory...
eBook - ePub- K. L. Richards(Author)
- 2020(Publication Date)
- CRC Press(Publisher)
...The engineering is dictated by the shape and has its own problems for the engineering designer. 3.2.7 Product Design There is very little difference between engineering and product design, as they both follow the same principles of methodology. Where engineering design concentrates on industrial aspects, product design considers the human aspects of the product. 3.2.8 Optimum Design This type of design is more mathematical and is based on differential equations to find the most optimal design in terms of a wide range of criteria. Examples would be the design of a racing cycle frame to minimise weight and maximise strength. 3.2.9 System Design Systems design is the process of defining the architecture, modules, interfaces and data for a system to satisfy a specific requirement. Systems design could be seen as the application of systems theory to product development. 3.2.10 Tooling Design This is a specialised area of manufacturing engineering which comprises the analysis, planning, design, construction and application of tools, and methods and procedures necessary to improve manufacturing productivity...
eBook - ePubManual of Engineering Drawing
British and International Standards
- Colin H. Simmons, Dennis E. Maguire, Neil Phelps(Authors)
- 2020(Publication Date)
- Butterworth-Heinemann(Publisher)
...Similarly by the purchase of a CAD system, a design does not emerge at the push of a button. The engineering designer is very much responsible for decisions taken at all technical stages between conception and production. The computer is an aid and performs as it is directed with rapidity and accuracy. The following notes are included to indicate areas of useful activity to assist the designer. Today it is all too common at the design conception stage for designers to go straight into modeling mode and before they know it, they have slipped into detail design mode and include far too much information in the concept design. Designers are encouraged to sketch and/or build simple models (Lego, plasticine, card) at the early stages, this is not a backward step and rewards can be gained from unshackling the designer from CAD at the start of a project. The preparation of two- and three-dimensional drawings and models and the projection of associated views is the ‘bread and butter’ work in the design office. Service manuals use exploded views so that people with no technical training can follow assembly sequences. Children stick together model kits with guidance using pictorial diagrams. CAD programs are available where a three-dimensional model can be produced automatically given two-dimensional views. From the dimensions of the component, the computer will calculate surface areas, volumes, weights for different materials, centers of gravity, moments of inertia, and radii of gyration; it can also use the applicable values for stress and other calculations, which are a necessary part of design. Computer models permit a study of special relationships and applications, which are given in the chapter which follows. Models can be manipulated into pleasing forms for artistic approval or for the basis for Additive Manufacturing or Rapid Machining before production work follows...
- Richard Stillwell(Author)
- 2018(Publication Date)
- Routledge(Publisher)
...5 The Electronic Product Design Process The comprehensive process of designing an electronic product has traditionally included a common denominator of trial and error. It is suggested that as long as engineers are creating and inventing, the trial-and-error method of the design process will be with us. However, in recent years the computer has become a vital tool on the engineer’s workbench (Figure 5.1). The computer provides the means of exercising iterative loops in the engineer’s trial-and-error design scheme. The objective here is to expedite the synthesis of design and, hence, the subsequent analysis. The sophistication of computer-aided engineering (CAE) software will be a direct factor in establishing the level of design iteration, particularly as the product matures. Computer-aided engineering software is available from many sources. This software is most often tailored for specific applications; software can be customized, of course, for a price. These programs, when debugged and functional for their intended purpose, are indeed valuable aids to the engineer. An important ingredient of computed-aided engineering is to permit the engineer to test a design by computer simulation. Thus, the engineer can make changes and modifications to a design at the computer stage. Of course, the results of the design synthesis and analysis will be a direct function of the level of sophistication of the program. There is a direct relationship between the program capability and its cost, depending on the product orientation and functional requirements and the enterprise marketplace. Each design requirement will be different and require unique and special program applications to meet its needs. Let it be clear that a product design engineer can not be held responsible for developing and generating his or her “own” computer-aided engineering programs (Figure 5.2). Specialists in this area are more likely to produce effective programs, and certainly in far less time...
