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See:
http://65.54.113.26/Author/53472443/l-s-d-morley
Selected Publications:
Morley LSD. An Improvement on Donnell’s Approximation for Thin-Walled Circular Cylinders. Quart. J. Mech. and Appl. Math., Vol. 12, 1959, pp: 89-99.
L.S.D. Morley, Skew Plates and Structures, Macmillan Co, 1963
Morley, L.S.D., "A Triangular Equilibrium Element with Linearly Varying Bending Moments for Plate Bending Problems", Journal of the Royal Aeronautical Society, Volume 71, p. 715, 1967.
Morley L.S.D., "The Triangular Equilibrium Element in the Solution of Plate Bending Problems", Aeronautical Quarterly, pp. 149- 169, 1968.
L. S. D. Morley (Royal Aircraft Establishment, Structures Department, X32 Building, Farnborough, Hants GU14 6TD, England), “Approximation to bending trial functions for shell triangular finite elements in quadratic parametric representation”, Computers & Structures, Vol. 16, No. 5, 1983, pp. 657-668,
doi:10.1016/0045-7949(83)90115-3
ABSTRACT: Shell triangular finite elements are examined which are parametrically represented by quadratic polynomials of the surface coordinates. It is shown that isoparametric representation of the rectangular components of displacement does not provide an acceptable description of inextensional bending of a curved surface—its bending is accompanied with middle surface strains which are too large to be ignored. Considerable improvement is made in the approximation to inextensional bending when the displacements are parametrically represented by cubic polynomials. The approximate inextensional bending modes are determined by examining eigenvalues of the positive semi-definite matrix of the integrated sums of squares of the principal middle surface strains taken over the element surface. Numerical results are listed for specimen finite elements which have positive, zero or negative Gaussian curvature. The Fortran computer program written for this investigation is described elsewhere.
L. S. D. Morley and M. P. Mould (Institute of Computational Mathematics, Brunel University, Uxbridge, UB8 3PH, United Kingdom), “The role of bending in the finite element analysis of thin shells”, Finite Elements in Analysis and Design, Vol. 3, No. 3, October 1987, pp. 213-240, doi:10.1016/0168-874X(87)90025-4
ABSTRACT: The role of bending in the finite element analysis of problems in the linear theory of thin shells is examined through an in-depth study of the behavior of a vehicle finite element. The chosen element is the very simple combined constant strain and constant bending moment flat triangle. It emerges that this vehicle element is a superb performer and the examination of its behaviour reveals that there are two quite different roles for the bending freedoms. One role concerns inextensional bending movements which extend over the whole model. The other role concerns local rotational movements which accompany the curvature changes of inextensional bending and of edge effect. Extensive numerical comparisons of demonstration inextensional bending movements are made against solutions obtained from the classical theory for shells which are very deep and which have strongly negative Gaussian curvature. Comparison of edge effect concerns a circular cylindrical thin shell. The paper concludes by giving details of a rudimentary matrix procedure which is currently under development and which is intended for use in the preliminary assessment of thin shell finite element models.
Peric D, Owen DRJ. The Morley thin shell finite element for large deformation problems: simplicity versus sophistication. In Nonlinear Engineering Computations, N. Bicanic et al. (eds.), Pineridge Press: Swansea, 1991.
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