ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1984.tb00539.x

出版商:Blackwell Publishing Ltd    

年代:1984

数据来源: WILEY

摘要:

A method is described and results presented for the separation of axial and bending components of stress taken on one surface of a structure with a two‐tier, three‐element rosette assem

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1984.tb00540.x

出版商:Blackwell Publishing Ltd    

年代:1984

数据来源: WILEY

摘要:

One method for measuring through the thickness residual stress distributions in welded pipes involves a destructive, three step laboratory procedure consisting of parting out, splitting, and layer removal operations. In the parting out step, a coupon of material is removed from the wall of the pipe while strain gauges on the inner and outer surfaces are monitored. In back computing the through the thickness residual stresses from the parting‐out strain gauge data, it is generally assumed that stress changes through the thickness of the coupon vary as a straight line. If the circumferential dimension of the coupon is large compared to the thickness, this assumption is valid. However, in the case of a pipe, the circumferential dimension is usually limited to reduce curvature effects during the subsequent splitting and layer removal steps. If this dimension is too small, the assumption of straight line stress changes through the thickness can lead to serious inaccuracies. In this paper, the validity of the straight line assumption is examined over a range of conditions. To handle cases where the straight line assumption is not valid, a modified back computation procedure for the analysis of parting‐out strain gauge data is developed and presented with numerical resu

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1984.tb00541.x

出版商:Blackwell Publishing Ltd    

年代:1984

数据来源: WILEY

摘要:

Small non‐linear interactions of the type referred to as autoparametric may have a considerable effect on the pattern of forced vibration response of certain categories of structures exhibiting low damping characteristics. Under conditions of internal resonance these may bring about a complete neutralisation of the normal forced vibration resonance curve with a transfer of energy to an indirectly excited mode. The paper examines non‐linear interactions between a pair of beam modes in forced vibration of a simple structure. Steady state solutions are obtained for the non‐linear system equations. Measurements of vibratory acceleration and strain on a laboratory model are shown to give good confirmation of the analytical results and show clearly the substantial effects of internal reso

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1984.tb00542.x

出版商:Blackwell Publishing Ltd    

年代:1984

数据来源: WILEY

摘要:

A complete separation of stresses throughout the entire stress concentration region near notches in plane, isotropic, linearly elastic plates is achieved using only isochromatic (difference of principal stresses) data. These data, which are obtained easily by conventional photoelastic techniques, are analysed by a non‐linear least squares technique based upon previously derived equations describing the asymptotic character of the rapidly varying stress field near the root of the notch. This paper demonstrates that isochromatic data of typical experimental accuracy from relatively few, arbitrarily located data points within the highly stressed region is sufficient to accurately predict the entire stress field, including location and magnitude of critical stress(es

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1984.tb00543.x

出版商:Blackwell Publishing Ltd    

年代:1984

数据来源: WILEY

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1984.tb00544.x

出版商:Blackwell Publishing Ltd    

年代:1984

数据来源: WILEY

摘要:

Book reviewed in this article:Handbook of measurement science, Volume 2, Practical fundamentals Editor P. H. SydenhamBoundary integral equation method in stress analysis

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1984.tb00545.x

出版商:Blackwell Publishing Ltd    

年代:1984

数据来源: WILEY

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1984.tb00546.x

出版商:Blackwell Publishing Ltd    

年代:1984

数据来源: WILEY

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1984.tb00547.x

出版商:Blackwell Publishing Ltd    

年代:1984

数据来源: WILEY

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1984.tb00548.x

出版商:Blackwell Publishing Ltd    

年代:1984

数据来源: WILEY