Ch01 - bud21932_ch01_002-026 07/27/2006 09:18 PM Page 2...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
PART 1 Basics
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
3 Chapter Outline 1–1 Design 4 1–2 Mechanical Engineering Design 5 1–3 Phases and Interactions of the Design Process 5 1–4 Design Tools and Resources 8 1–5 The Design Engineer’s Professional Responsibilities 10 1–6 Standards and Codes 12 1–7 Economics 12 1–8 Safety and Product Liability 15 1–9 Stress and Strength 15 1–10 Uncertainty 16 1–11 Design Factor and Factor of Safety 17 1–12 Reliability 18 1–13 Dimensions and Tolerances 19 1–14 Units 21 1–15 Calculations and Significant Figures 22 1–16 Power Transmission Case Study Specifications 23 1 Introduction to Mechanical Engineering Design
Background image of page 2
4 Mechanical Engineering Design Mechanical design is a complex undertaking, requiring many skills. Extensive relation- ships need to be subdivided into a series of simple tasks. The complexity of the subject requires a sequence in which ideas are introduced and iterated. We Frst address the nature of design in general, and then mechanical engineering design in particular. Design is an iterative process with many interactive phases. Many resources exist to support the designer, including many sources of information and an abundance of computational design tools. The design engineer needs not only to develop competence in their Feld but must also cultivate a strong sense of responsibility and professional work ethic. There are roles to be played by codes and standards, ever-present economics, safety, and considerations of product liability. The survival of a mechanical component is often related through stress and strength. Matters of uncertainty are ever-present in engineer- ing design and are typically addressed by the design factor and factor of safety, either in the form of a deterministic (absolute) or statistical sense. The latter, statistical approach, deals with a design’s reliability and requires good statistical data. In mechanical design, other considerations include dimensions and tolerances, units, and calculations. The book consists of four parts. Part 1, Basics, begins by explaining some differ- ences between design and analysis and introducing some fundamental notions and approaches to design. It continues with three chapters reviewing material properties, stress analysis, and stiffness and de±ection analysis, which are the key principles nec- essary for the remainder of the book. Part 2, Failure Prevention, consists of two chapters on the prevention of failure of mechanical parts. Why machine parts fail and how they can be designed to prevent fail- ure are difFcult questions, and so we take two chapters to answer them, one on pre- venting failure due to static loads, and the other on preventing fatigue failure due to time-varying, cyclic loads. In Part 3, Design of Mechanical Elements, the material of Parts 1 and 2 is applied to the analysis, selection, and design of speciFc mechanical elements such as shafts, fasteners, weldments, springs, rolling contact bearings, Flm bearings, gears, belts, chains, and wire ropes.
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 25

Ch01 - bud21932_ch01_002-026 07/27/2006 09:18 PM Page 2...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online