A Special Investigation to Develop a General Method for Thee-dimensional Photoelastic Stress Analysis
A Special Investigation to Develop a General Method for Thee-dimensional Photoelastic Stress Analysis

Author: Max Mark Frocht

Publisher:

Published: 1952

Total Pages: 70

ISBN-13:

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The method of strain measurement after annealing is reviewed and found to be unsatisfactory for the materials available in this country. A new, general method is described for the photoelastic determination of the principal stresses at any point of a general body subjected to arbitrary loads. The method has been applied to a sphere subjected to diametral compressive loads. The results show possibilities of high accuracy.

Report
Report

Author: United States. National Advisory Committee for Aeronautics

Publisher:

Published: 1953

Total Pages: 26

ISBN-13:

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Photoelasticity
Photoelasticity

Author: M. M. Leven

Publisher: Elsevier

Published: 2013-10-22

Total Pages: 494

ISBN-13: 1483158543

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Photoelasticity presents the development of photoelasticity. This book discusses the principle of optical equivalence of stressed isotropic bodies. Organized into 29 chapters, this book begins with an overview of the progress in three-dimensional photoelasticity. This text then summarizes the approximate theoretical analysis by the strain-energy technique and derives the basic equations for the evaluation of P and Q by graphical integration. Other chapters consider the importance of stress concentrations in the domain of strength of materials, particularly where fatigue is present. This book discusses a well the various instructive fractures and indicates that the strength of bakelite is determined by the maximum tensile stresses as computed by advanced methods of stress analysis. The final chapter deals with the two fundamental problems in three-dimensional photoplasticity and explains the general stress-optic law under plastic flow without unloading. This book is a valuable resource for designers as well as mechanical and civil engineers.

Theory and Procedure for Determining Loads and Motions in Chine-immersed Hydrodynamic Impacts of Prismatic Bodies
Theory and Procedure for Determining Loads and Motions in Chine-immersed Hydrodynamic Impacts of Prismatic Bodies

Author: Emanuel Schnitzer

Publisher:

Published: 1952

Total Pages: 740

ISBN-13:

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A theoretical method is derived for computing the motions and hydrodynamic loads during water landings of prismatic bodies involving appreciable immersion of the chines. A simplified method of computation covering flat-plate and V-bottom bodies with beam-loading coefficients greater than unity is given as a separate section. Comparisons of theory with experiment are presented as plots of impact lift coefficient and maximum draft-beam ratio against flight-path angle and as time histories of loads and motions. Fair agreement is found to exist for chine-immersed landings for angles of dead rise of 0 degrees and 30 degrees, beam-loading coefficients from 1 to 36.5, flight-path angles from 2 to 90 degrees, and trims from 6 to 45 degrees.