摘要:

The Hon. Secretary of the British Society for Strain Measurement wishes to point out that the dates of some of the B.S.S.M. meetings in the Diary are provisional and that further meetings will be announced in some regions. Firmer details will be available in due course from the B.S.S.M. office. 281 Heaton Road, Newcastle–upon– Tyne, or from the regional organisers indicated in the Di

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1973.tb01815.x

出版商:Blackwell Publishing Ltd    

年代:1973

数据来源: WILEY

摘要:

The stress–strain behaviour of mild steel under cyclic loading is examined. The results of tests are described in which a variety of loadings were applied to reinforcing bars to study a range of initial strains and loading and unloading sequences from tension and compression. The tests emphasize that when postelastic stress reversals take place the stress–strain relationship for steel becomes non–linear over much of the loading range owing to the Bauschinger effect. It is found that a Ramberg–Osgood type function gives good agreement with the loading portions of the experimental curves except at very large strains. The empirical constants in the function were determined from the experimental results by least squares analyses and were found to depend on the plastic strain in the previous loading run and the number of previous loadi

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1973.tb01816.x

出版商:Blackwell Publishing Ltd    

年代:1973

数据来源: WILEY

摘要:

This paper deals with the contact pressure between a belt and the pulley to which it transmits force and with the bending and membrane stresses in the belt. The anticlastic configuration of the belt is also taken into consideration. The commonly known simplified approximate analysis of the pressure, as well as the results of a more elaborated theory, are presented. Also given in the paper are the description and evaluation of several experimental stress analysis methods that can be used to solve the problem. Two– and three–dimensional photoelasticity, thickness measurements and electrical strain gauges were found to be the most practical approaches. The correlation of results obtained, using the theories and the experimental methods, is discussed. It is estimated that the peak contact pressure is 3–5 times that computed using the plane stress assumption. Results obtained will also have application in the design of wire–ropes or cables transmitting forces to sheaves o

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1973.tb01817.x

出版商:Blackwell Publishing Ltd    

年代:1973

数据来源: WILEY

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1973.tb01818.x

出版商:Blackwell Publishing Ltd    

年代:1973

数据来源: WILEY

摘要:

Owing to the stress–dependent nature of soil properties, the use of models under increased gravity is the most satisfactory method of testing the very large structures encountered in civil engineering. This paper outlines some of the problems produced by a high ‘g’ environment in the measurement of strain, displacement and soil and water pre

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1973.tb01819.x

出版商:Blackwell Publishing Ltd    

年代:1973

数据来源: WILEY

摘要:

Surface strain measurements of bulk concrete structures such as dams provide insufficient information and embedded strain measuring devices are necessary. For complete analysis six strain measurements are required. The device described indicates nine independent readings from which not only is a complete analysis possible by solution of the strain matrix constructed from these readings, but gross errors in individual readings may be identified and these readings discarded. An evaluation may be made of the errors in the results determined from the remaining gauges.

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1973.tb01820.x

出版商:Blackwell Publishing Ltd    

年代:1973

数据来源: WILEY

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1973.tb01821.x

出版商:Blackwell Publishing Ltd    

年代:1973

数据来源: WILEY

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1973.tb01822.x

出版商:Blackwell Publishing Ltd    

年代:1973

数据来源: WILEY

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1973.tb01823.x

出版商:Blackwell Publishing Ltd    

年代:1973

数据来源: WILEY

ISSN:0039-2103    

DOI:10.1111/j.1475-1305.1973.tb01824.x

出版商:Blackwell Publishing Ltd    

年代:1973

数据来源: WILEY