Roark's Formulas for Stress and Strain
Introduction '''''Roark's Formulas for Stress and Strain''''' is a mechanical engineering design book written by Richard G. Budynas and Ali M. Sadegh. It was first published in 1938 and the most current ninth edition was published in March 2020.
Subjects The book covers various subjects, including bearing and shear stress, experimental stress analysis, stress concentrations, material behavior, and stress and strain measurement. It also features expanded tables and cases, improved notations and figures within the tables, consistent table and equation numbering, and verification of correction factors. The formulas are organized into tables in a hierarchical format: chapter, table, case, subcase, and each case and subcase is accompanied by diagrams.It Covers:• The behavior of bodies under stress• Analytical, numerical, and experimental methods• Tension, compression, shear, and combined stress• Beams and curved beams• Torsion, flat plates, and columns• Shells of revolution, pressure vessels, and pipes• Bodies under direct pressure and shear stress• Elastic stability• Dynamic and temperature stresses• Stress concentration • Fatigue and fracture• Stresses in fasteners and joints• Composite materials and solid biomechanics
Topics '''Here are the topics covered in the 7th Edition:'''Chapter 1 – IntroductionChapter 2 – Stress and Strain: Important RelationshipsChapter 3 – The Behavior of Bodies Under StressChapter 4 – Principles and Analytical MethodsChapter 5 – Numerical MethodsChapter 6 – Experimental MethodsChapter 7 – Tension, Compression, Shear, and Combined StressChapter 8 – Beams; Flexure of Straight BarsChapter 9 – Bending of Curved BeamsChapter 10 – TorsionChapter 11 – Flat PlatesChapter 12 – Columns and Other Compression MembersChapter 13 – Shells of Revolution; Pressure Vessels; PipesChapter 14 – Bodies in Contact Undergoing Direct Bearing and Shear StressChapter 15 – Elastic StabilityChapter 16 – Dynamic and Temperature StressesChapter 17 – Stress Concentration FactorsAppendix A – Properties of a Plane AreaAppendix B – GlossaryAppendix C – Composite MaterialsIn all, there are over 5,000 formulas for over 1,500 different load/support conditions for various structural members.
Editions * 1st Edition 1938* 2nd Edition 1943* 3rd Edition 1954* 4th Edition 1965* 5th Edition 1975  – * 6th Edition 1989  – * 7th Edition September 13, 2001 (851 Pages)  – * 8th Edition November 28, 2011 (1072 Pages)  – *9th Edition March 9, 2020 (928 Pages)
Biography Richard G. Budynas is professor of mechanical engineering at Rochester Institute of Technology. He is author of a newly revised McGraw-Hill textbook, Applied Strength and Applied Stress Analysis, 2nd Edition.Ali M. Sadegh is a professor and the Founder and Director of the Center for Advanced Engineering Design at  The City College of New York. He is a Licensed Professional Engineer, P.E., and a Certified Manufacturing Engineer, CMfgE.Warren C. Young is professor emeritus in the department of mechanical engineering at the University of Wisconsin, Madison, where he was on the faculty for over 40 years. Dr. Young has also taught as a visiting professor at Bengal Engineering College in Calcutta, India, and served as chief of the Energy Manpower and Training Project sponsored by USAir in Bandung, Indonesia.
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