Parallel Columns With Common Lateral Supports

1945 ◽  
Vol 12 (4) ◽  
pp. A253-A256
Author(s):  
H. L. Langhaar
Keyword(s):  
General Problem ◽  
Correlation Effects ◽  
Aircraft Structures ◽  
Single Column ◽  
The Stability ◽  
Stress Analyses

Abstract Problems in the stress analyses of semimonocoque aircraft structures have suggested the investigation of the stability of a system of closely spaced, equally stressed, parallel columns with lateral bulkhead supports. The theory presented in this paper establishes a correlation between this problem and the problem of stability of a single column with lateral spring supports. Since the theory for the latter case has been developed by several authors, the correlation effects a solution of the more general problem.

Effective stress analysis of the stability of embankments on soft soils

1982 ◽  
Vol 19 (4) ◽  
pp. 433-450 ◽  
Author(s):  
G. Pilot ◽  
B. Trak ◽  
P. La Rochelle
Keyword(s):  
Stress Analysis ◽  
Effective Stress ◽  
Total Stress ◽  
Soft Soils ◽  
Effective Stresses ◽  
Methods Of Analysis ◽  
Effective Stress Analysis ◽  
The Stability ◽  
Stress Analyses

This paper presents the results of a study of stability by effective stress analysis of four embankments that were built to failure; three of these embankments are located in Narbonne, Lanester, and Cubzac in France, and the fourth one in Saint-Alban, Québec. After an outline of the procedures followed to obtain the required data and parameters, a brief discussion is presented on the defects inherent in the methods of analysis in terms of effective stresses. The factors of safety obtained by the effective stress analyses are compared with the results of total stress analyses. It is concluded that, in spite of the limitations of the method of effective stress analysis, this approach, as used in the present paper, remains a useful tool for the engineer.

The general problem of the stability of motion

Automatica ◽  
1995 ◽  
Vol 31 (2) ◽  
pp. 353-354 ◽  
Author(s):  
Malcolm C. Smith
Keyword(s):  
General Problem ◽  
Stability Of Motion ◽  
The Stability

scholarly journals The General Problem of the Stability of Motion

1994 ◽  
Vol 61 (1) ◽  
pp. 226-227 ◽  
Author(s):  
A. M. Lyapunov ◽  
J. A. Walker
Keyword(s):  
General Problem ◽  
Stability Of Motion ◽  
The Stability

scholarly journals Hybrids derived from the viruses of variola major and cowpox

1964 ◽  
Vol 62 (2) ◽  
pp. 147-158 ◽  
Author(s):  
H. S. Bedson ◽  
K. R. Dumbell
Keyword(s):  
Chick Embryo ◽  
General Problem ◽  
Good Evidence ◽  
Plaque Formation ◽  
The Other ◽  
Mixed Infections ◽  
Cowpox Virus ◽  
Ceiling Temperature ◽  
The Stability

The characterization of 16 clones of virus derived from mixed infections with variola major and cowpox has been described. This work has involved the description of the plaques produced by variola major in chick embryo monolayers, and a more detailed study of the effects of raised temperature on pock production by pox viruses on the C.A.M.Two of the variola major—cowpox clones were found to correspond to cowpox virus, while the other 14 shared various combinations of parental characters. Among them there were 10 distinct new types of virus. Evidence of the stability of these viruses has been presented.Analysis of the combination of characters encountered among the hybrids has given good evidence that all the eight marker characters used segregate independently. A particular instance of this was the character of chick embryo virulence which, among the hybrid viruses, was shown to be unrelated either to ceiling temperature or speed of plaque formation.The significance of these findings in relation to the general problem of virulence has been briefly discussed. The possibility that vaccinia may have originated as a hybrid of variola and cowpox has lso been considered.

STABILITY CONJECTURE IN THE THEORY OF TENSEGRITY STRUCTURES

2003 ◽  
Vol 03 (01) ◽  
pp. 1-16 ◽  
Author(s):  
K. Y. VOLOKH
Keyword(s):  
General Problem ◽  
Tensegrity Structures ◽  
Stability Conjecture ◽  
The Stability

The general problem of the stability of tensegrity structures comprising struts and cables is formulated. It is conjectured that any tensegrity system with totally tensioned cables is stable independently of its topology, geometry and specific magnitudes of member forces.

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