THE ELEMENTS OF MECHANICAL DESIGN BY JAMES G.SKAKOON PDF

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Specialized Summary In this handy and unique volume the author uses his own experience, along with input from other expert designers, to explicitly state design principles and practices. Readers will not have to discover these principles on their own and will be able to apply these fundamental concepts throughout their designs. Contents Part I. Elementary rules of mechanical design 1. Create designs that are explicitly simple-keep complexity intrinsic 2.

Keep the functions of a design independent from one another 3. Use exact constraint when designing structures and mechanisms-never overconstrain a design 4.

Plan the load path in parts, structures, and assemblies 5. Triangulate parts and structures to make them stiffer 6. Avoid bending stresses. Prefer tension and compression 7.

Improve designs with self-help 8. Manage friction in mechanisms. Part II. Essentials of thought and procedure in mechanical design 9. Use three-dimensional solid model layouts to find the best arrangement of parts and assemblies Invert geometry to reveal new solutions Build prototypes of everything-but not all at once Separate strength from stiffness-and stiffness from strength Never overlook buckling phenomena in parts and structures Analyze and test for trends and relationships Identify contingency plans to minimize risks in design.

Part III. Some practical advice Avoid press fits Use closed sections or three-dimensional bracing for torsional rigidity When designing springs, use a low spring rate and a high initial deflection Minimize and localize the tolerance path in parts and assemblies Use mechanical amplification to reduce failures Include lead-ins in assembled designs Design assemblies to be self-locating, self-fixturing, self-securing, self-aligning, self-adjusting Use self-assembling symmetry to create a whole from two halves.

Appendix A. Rules for exact constraint Appendix B. Nesting force windows in exact constraint design Appendix C. Design for assembly rules Appendix D. With experience comes wisdom Text notes and references.

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