Editors Board

COMPUTER APPLIED

METHODS

.

MECHANI;

AND ENGINEERING

EDITORS: J.H. ARGYRIS

and

Department of Aeronautics Imperial College of Science and Technology University of London Prince Consort Road LONDON S. W. 7 U.K.

W. PRAGER Division of Engineering Brown University PROVIDENCE, R.I. 02912 U.S.A.

or Institut fiir Statik und Dynamik der Luft- und Raumfahrtkonstruktionen pfaffen waldring 2 7 7 STUTTGART 80 Germany

Volume

1, 1972

c

NORTH-HOLLAND PUBLISHING COMPANY, AMSTERDAM

ASSOCIATE EDITORS: M. FEINGOLD 9, rue Th~b~~~ 78 MARLY-LE-ROY France

C.E. MASSONNET Institrcr du Genie Civil 6, Quai Banning LIEGE Belgium

E. PESTEL ~ns~i~~~ fir Me~hff~i~ Technische UniversittitHunnover Callinstrasse 1.5 3 HANNOVER Germmy

K.1. BABENKO Institute of Applied M~~he~gr~cs USSR Academy of Sciences Miusskaya Sq., 4, MOSCOW I.25047 USSR

ADVISORY EDITORS: J,F. BESSELING, De@ H. CABANNES, Paris A.S.L. CHAN, London H. COHEN, Yorktown Heights, N. Y. M.Z. COHN, Waterloo, Ont. R.W. HAMMING, Muway Hill, N.J. F. HARLOW, Los Alamos, N.M. I. HOLAND, Trondheim W.C. HURTY, Los Angeles, Calif: F.A. LECKIE, Leicester J.L. LIONS, Paris G. MAIER, M&m

B. PAUL, Philadelphia, Pa. KS. PISTER, Berkeley, Calif: AX RAO, Bangalore, lndiu W.P. RODDEN, Los Angeles, CuliJ: R. A. ROSANOFF , Hacienda He&h ts, Calif H.R. SCHWARZ, Zurich A.M.O. SMITH, Long Beach, Calif: D.B. SPALDING&xzdon E. VAN SPIEGEL, Del& U. WEGNER, Stuttgart D. WITHUM, Humover