Theory of Equations. By J. V. Uspensky. Pp. vii, 353. 27s. 1948. (McGraw-Hill)

Numerous research publications purport to give in-plane buckling loads for unsymmetrically laminated composite plates. In many of these cases, bifurcation buckling is impossible; that is, transverse deflection is initiated, regardless of the magnitude of the loading. In the present work, finite element studies are made of four types of unsymmetrical laminates, including antisymmetrical ones. Twelve sets of edge constraints are considered. Maximum values of transverse deflection are determined for uniform and linearly varying in-plane boundary forces, including uniaxial, biaxial, and shear. Cases where the plate remains flat are thereby also identified. Results confirm a theoretical analysis previously made. Cases for which improper buckling results are often reported in the published literature are identified.

Buckling or transverse deflections of unsymmetrically laminated plates subjected to in-plane loads

A refined laminated plate and shell theory with applications

This paper deals with the development of the linearized equations governing the buckling behavior of cylindrical shell panels faced with fiber-reinforced plastic under uniform shear and normal membrane forces. The formulation takes into account the transverse shear and normal membrane forces. The formulation takes into account the transverse shear flexibility. The first approach is an analytical approach of the Galerkin type and rests upon the principle of virtual work. The second is a finite-element displacement approach

Static buckling of moderately thick, anisotropic, laminated and sandwich cylindrical shell panels

Buckling and vibration of cross-ply laminated non-circular cylindrical shells

Buckling of antisymmetric cross- and angle-ply laminated plates

An exact method based on a displacement approach is developed and applied to obtain the buckling response of antisymmetrically laminated cross-ply and angle-ply rectangular plates resting on Winkler-Pasternak foundation. Two opposite loaded edges are assumed to be simply supported and various other boundary conditions on the remaining two edges are considered. Typical results for a number of different plate lay-ups and Winkler-Pasternak values are presented in dimensionless graphical form. The effect of material coupling and foundation stiffnesses on the buckling response of plates are considered.

Buckling of Antisymmetrically Laminate Cross-Ply and Angle-Ply Rectangular Plates

The buckling of anti-symmetrically laminated angle-ply and cross-ply plates

A study of coupling in laminated plates

ABSTRACT Background Since COVID-19, remote consultation (by telephone and video) has become widespread. This study investigated the experience of using remote consultation in Specialist Intellectual Disability Community services. Method A total of 126 health staff working across eight Specialist Intellectual Disability Community teams in the NHS Health Board of Greater Glasgow and Clyde were asked to complete a short Likert-scale survey about remote consultation. Results There were 61 (48%) respondents from a range of disciplines. Overall, respondents were positive about remote consultation but found it was often inadequate to complete a full patient assessment. Moving forwards, respondents wanted around 60% of all consultations to remain face-to-face. It was significantly more difficult to engage and communicate with patients with more severe levels of disability. Conclusions Remote consultation has been successful, but there is still a need for face-to-face assessment in intellectual disability services, particularly when working with people with more severe levels of disability.

Sudhakar Sharma

Papers

Buckling of antisymmetric cross- and angle-ply laminated plates

Buckling of Antisymmetrically Laminate Cross-Ply and Angle-Ply Rectangular Plates

The buckling of anti-symmetrically laminated angle-ply and cross-ply plates

A study of coupling in laminated plates

A survey on the use of remote consultation for people with intellectual disability: The experience of community intellectual disability teams