87 The Big Picture You Are the Designer 3–1 Objectives of This Chapter 3–2 Philosophy of a Safe Design 3–3 Representing Stresses on a Stress Element 3–4 Normal Stresses Due to Direct Axial Load 3–5 Deformation under Direct Axial Load 3–6 Shear Stress Due to Direct Shear Load 3–7 Torsional Load—Torque, Rotational Speed, and Power 3–8 Shear Stress Due to Torsional Load 3–9 Torsional Deformation 3–10 Torsion in Members Having Non-Circular Cross Sections 3–11 Torsion in Closed Thin-Walled Tubes 3–12 Torsion in Open Thin-Walled Tubes 3–13 Shear Stress Due to Bending 3–14 Shear Stress Due to Bending—Special Shear Stress Formulas 3–15 Normal Stress Due to Bending 3–16 Beams with Concentrated Bending Moments 3–17 Flexural Center for Beam Bending 3–18 Beam Deflections 3–19 Equations for Deflected Beam Shape 3–20 Curved Beams 3–21 Superposition Principle 3–22 Stress Concentrations 3–23 Notch Sensitivity and Strength Reduction Factor STRESS AND DEFORMATION ANALYSIS CHAPTER THREE THE BIG PICTURE Discussion Map ■ As a designer, you are responsible for ensuring the safety of the components and systems you design. ■ You must apply your prior knowledge of the prin- ciples of strength of materials. Discover How could consumer products and machines fail? Describe some product failures you have seen. Stress and Deformation Analysis This chapter presents a brief review of the fundamentals of stress analysis. It will help you design products that do not fail, and it will prepare you for other topics later in this book. A designer is responsible for ensuring the safety of the components and systems that he or she designs. Many factors affect safety, but one of the most critical aspects of design safety is that the level of stress to which a machine component is subjected must be safe under reasonably foreseeable conditions. This prin- ciple implies, of course, that nothing actually breaks. Safety may also be compromised if components are
STRESS AND DEFORMATION ANALYSIS
Jun 23, 2023
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