Hostname: page-component-7bb8b95d7b-fmk2r Total loading time: 0 Render date: 2024-09-12T05:17:39.943Z Has data issue: false hasContentIssue false

The Initial Strain Concept

Published online by Cambridge University Press:  04 July 2016

Alex. L. M. Grzedzielski*
Affiliation:
National Aeronautical Establishment, Ottawa

Extract

In a note published in the June 1960 JOURNAL, 1 pointed out certain deficiencies in the initial strain concept introduced by Messrs. J. H. Arygris and S. Kelsey. In the August JOURNAL, those authors have disputed my conclusions with an argument which, I feel, does not pay due regard to current literature and I believe may be based on a misinterpretation of certain algebraic manipulations contained in my note. For they concluded that my note contained misprints, which it, in fact, did not. Due to these unfortunate circumstances Messrs. Argyris and Kelsey failed to illuminate the basic disagreement between our two formulations. For this reason I should like to set out in simple detail the exact nature of our disagreement and to point out, as clearly as possible, where the initial strain concept as developed by Messrs. Argyris and Kelsey becomes, I believe, somewhat inadequate and how the concept of fictitious thermal loads achieves greater validity.

Type
Technical Notes
Copyright
Copyright © Royal Aeronautical Society 1961

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1.Argyris, J. H. and Kelsey, S. (1957). The Matrix Force Method of Structural Analysis and Some New Applications. A.R.C. R. & M. 3034, 1957.Google Scholar
2.Argyris, J. H. (1959). Recent Developments of Matrix Theory of Structures. AGARD 1959. (To be published.)Google Scholar
3.Grzedzielski, Alex. L. M. (1959). Organization of a Large Computation in Aircraft Stress Analysis. AGARD 1959. (To be published.) See also National Research Council of Canada, Aero. Report LR-257.Google Scholar
4.Timoshenko, S. (1951). Theory of Elasticity, 2nd Edition. McGraw-Hill, 1951.Google Scholar
5.Gatewood, B. E. (1957). Thermal Stresses with Applications to Airplanes, Missiles, Turbines and Nuclear Reactors. McGraw-Hill, 1957.Google Scholar
6.Pearson, Carl E. (1959). Theoretical Elasticity. Harvard University Press, Cambridge, 1959.Google Scholar
7.Grzedzielski, Alex. L. M. (1960). Note on Some Applications of the Matrix Force Method of Structural Analysis. Journal of the Royal Aeronautical Society, Vol. 64, No. 594, June 1960.Google Scholar
8.Argyris, J. H. and Kelsey, S. (1960). Initial Strains in the Matrix Force Method of Structural Analysis. Journal of the Royal Aeronautical Society, Vol. 64, No. 596, August 1960.Google Scholar
9.Argyris, J. H. and Kelsey, S. (1959). The Analysis of Fuselages of Arbitrary Cross-Section and Taper. Aircraft Engineering XXXI, No. 361, pp. 6274, No. 362, pp. 101- 112, No. 363, pp. 133-143, No. 364, pp. 169-180, No. 365, pp. 192-203, No. 366, pp. 244-256, No. 367, pp. 272-283, 1959.CrossRefGoogle Scholar