ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1976.tb00203.x

出版商:Blackwell Publishing Ltd    

年代:1976

数据来源: WILEY

摘要:

A method is presented for the calibration of equidensity ‘lines’ produced from conventional fringe patterns by the use of a special Agfa‐Gevaert film. Photoelasticity is an important area of applic

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1976.tb00204.x

出版商:Blackwell Publishing Ltd    

年代:1976

数据来源: WILEY

摘要:

A method is described for estimating the size of the plastic zone developing around a central hole in a finite width plate subjected to a monotonically increasing tensile load from a knowledge of the elastic stress field only. The plate is assumed to be subjected to plane stress conditions and to be made from an elastic, linearly strain‐hardening material. Yielding is considered to occur when the Mises criterion is satisfied. Stresses within the plastically deformed area of the plate are evaluated by means of the Prandtl‐Reuss incremental flow rule together with strains increments calculated from the elastic stress distributions. The predicted plastic zone sizes correlate well with those determined experimentally by other work

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1976.tb00205.x

出版商:Blackwell Publishing Ltd    

年代:1976

数据来源: WILEY

摘要:

Analytical expressions are derived by the conformal mapping techniques of Muskhelishvili for the asymptotic character of the stress fields at the root of notches, re‐entrant corners, etc. in plane bodies. It is shown that the stress field can be expressed as the product of a rapidly varying term, which depends only on the known geometry, and a slowly varying term which is associated with the nominal stresses. Using the derived expressions, together with a few stress, strain, or photoe/astic measurements at arbitrary points within the notch region, the entire stress field around the notch can be predicted. This includes the location and magnitude of maximum stress. The suggested technique is applied to a notch with parabolic shape and is shown to yield highly accurate result

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1976.tb00206.x

出版商:Blackwell Publishing Ltd    

年代:1976

数据来源: WILEY

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1976.tb00207.x

出版商:Blackwell Publishing Ltd    

年代:1976

数据来源: WILEY

摘要:

A simply fabricated inexpensive device is described which, when viewed between crossed polaroids, shows a mutually perpendicular set of isoclinics whose directions coincide with the axes of the polaroids. An outline is presented of the usefulness of his ‘isoclinic indicator’ in photoelastic work, particularly when isoclinic patterns are being photographed for analysis at a later time. The ease with which any error in the orientation of the polaroids can be detected from such photographs is demonstra

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1976.tb00208.x

出版商:Blackwell Publishing Ltd    

年代:1976

数据来源: WILEY

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1976.tb00209.x

出版商:Blackwell Publishing Ltd    

年代:1976

数据来源: WILEY

摘要:

Book reviewed in this article:Computing Developments in Experimental and Numerical Stress Analysis, P. Stanley,Progress in Experimental Mechanics, Durelli Anniversary Volume, V. J. Parks,Essential Solid Mechanics, by B. W. Young,

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1976.tb00210.x

出版商:Blackwell Publishing Ltd    

年代:1976

数据来源: WILEY

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1976.tb00211.x

出版商:Blackwell Publishing Ltd    

年代:1976

数据来源: WILEY

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1976.tb00212.x

出版商:Blackwell Publishing Ltd    

年代:1976

数据来源: WILEY