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STRESS ANAJLYSIS

Torsion of wing trusses at divlng speeds, by Roy G. Miller. Washington, U.S. Govt. print. off., 1920.    8 p. diagrs. (N.A.C.A.

Report no. 104)

Truss deflections accurately deterrnined by angle changes and

elastie weights, by D.B. Steinnan. Engineering news, Nev;

York, May 15-20, 1916, v. 73, p. 644-46, 680-82.

New method of determining stresses in web members of a Fink truss, by H.B. V/rigley. Building age, New York, May 1916, v. 38, p. 53.

Deflection of trusses, by E.H. Casper and C.J. Kennedy. * Society of western engineers journal, Chicago, Feb. 1916, v. 21, p. 115-35. diagrs., illus.

General method for drawing influence lines for stress in simple trusses, by M.A. Howe. Engineering news, New York, June 12, 1913, v. 69, p. 1227-31. diagrs*

TUBES

Torsion of tapered tubes (effect of various parameters on the

stiffness, etc.), by L. Hanson. Aircraft engineering, London, Apr. 1939, v. 11, no. 122, p. 145-47, 160. diagrs., illus.

Local instability of symmetrical rectangular tubes under axial

compression, by Eugene E. Lunaąuist. Washington, 1939.    22 p.

diagrs., tables. (N.A.CoA. Technical notes no. 686)

Torsional stability of aluminum alloy seamless tubing, by R.L. Moore and D.A. Paul. Washington, 1939.    13 p. diagrs.,

illus., tables. (N.A.C.A. Technical notes no. 696)

Torsion of built-up and reinforced tubes, by W.J. Duncan. Engineering, London, Oct. 21, 1938, p. 412-14; 467-69. diagrs., illus., tables. (Abstract Technical data digest,

New York, Nov. 1, 1950)

Deux problemes d^fechantillonnage optimum. 1. Flambement des tubes cylindriąues.    2. Flexion et corapression des

longerons caissons en bois, par StanislasSchneider.

L^!Aeronautiąue, Paris, Aug.-Sep. 1938, v. 17, no. 188-89, p. 93-97; 109-14. diagrs., illus.

Column strength of tubes elastically restrained against rotation at the ends, by W.R. Osgood. Washington, U.S. Govt. print. off., 1938.    38 p. illus., tables. (N.A.C.A. Report