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Machine Design

Design of machine elements: shafts, gears, bearings, fasteners.

Chapters

20 chapters · 20 problem sets

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1 Introduction to Mechanical Engineering DesignWhat design is, how the design process flows, and the core quantitative tools — design factor, factor of safety, reliability, tolerances, and units… Problems ›

2 MaterialsHow material strength and stiffness are measured and described statistically, how cold work, hardness, impact, and temperature change them, and how… Problems ›

3 Load and Stress AnalysisFrom free-body diagrams and beam diagrams to the full toolbox of stress analysis: plane-stress transformation and Mohr's circle, bending and transv… Problems ›

4 Deflection and StiffnessSpring rates and the deflection of bars, shafts, and beams — by direct integration, superposition, singularity functions, and the energy method of… Problems ›

5 Failures Resulting from Static LoadingHow to predict static failure from limited material data: the yield criteria for ductile metals (maximum shear stress, distortion energy, Coulomb-M… Problems ›

6 Fatigue Failure Resulting from Variable LoadingThe complete stress-life workflow for cyclic loading: the S-N diagram and endurance limit, Marin modifying factors, fatigue notch sensitivity, and… Problems ›

7 Shafts and Shaft ComponentsApplying the fatigue and deflection tools of earlier chapters to the rotating shaft: material choice and layout, the distortion-energy design equat… Problems ›

8 Screws, Fasteners, and the Design of Nonpermanent JointsThread geometry and the mechanics of power screws, then the complete analysis of bolted joints: fastener and member stiffness, the joint stiffness… Problems ›

9 Welding, Bonding, and the Design of Permanent JointsAnalysis and design of welded connections: the throat-shear model for butt and fillet welds, the treat-the-weld-as-a-line method for joints in tors… Problems ›

10 Mechanical SpringsHelical compression and extension springs from first principles: shear stress with curvature correction, spring rate by Castigliano, end styles and… Problems ›

11 Rolling-Contact BearingsSelecting catalog bearings from load, life, and reliability requirements: the load-life power law, the Weibull reliability model, the master catalo… Problems ›

12 Lubrication and Journal BearingsHydrodynamic lubrication from viscosity to design: Newton's viscous law, Petroff's friction equation, the Sommerfeld bearing characteristic number,… Problems ›

13 Gears — GeneralThe geometry and kinematics of gearing: tooth nomenclature, the involute profile and the law of conjugate action, contact ratio and interference, t… Problems ›

14 Spur and Helical GearsStrength-based gear design: the Lewis bending equation and its evolution into the AGMA bending and contact-stress methodology, the full set of modi… Problems ›

15 Bevel and Worm GearsExtending the AGMA strength methodology to the harder cases: straight-bevel gear bending and contact stresses with their special factors, the worm-… Problems ›

16 Clutches, Brakes, Couplings, and FlywheelsDevices that start, stop, store, and smooth rotation: the static analysis of friction brakes and clutches (rim, band, disk, cone), the uniform-wear… Problems ›

17 Flexible Mechanical ElementsBelts, chains, and wire rope for transmitting power over distance: the tension-ratio mechanics of flat and V-belt drives with centrifugal effects,… Problems ›

18 Power Transmission Case StudyIntegrating the whole course into one design: a double-reduction gearbox worked from power and torque requirements through gear specification, shaft… Problems ›

19 Finite-Element AnalysisA conceptual introduction to FEA for the designer: how the method discretizes a structure into elements and solves the assembled stiffness equation… Problems ›

20 Geometric Dimensioning and TolerancingThe symbolic language (ASME Y14.5) that controls not just size but the location, orientation, and form of part features: datums and the datum refer… Problems ›

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