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Now showing items 34-53 of 59

Optimal design of symmetrically laminated plates for minimum deflection and weight

Walker, Mark; Reiss, Talmon; Adali, Sarp (Elsevierhttp://dx.doi.org/10.1016/S0263-8223(97)00109-8, 1997)

The minimum deflection and weight designs of laminated composite plates are given. The finite element method using Mindlin plate theory is used in conjunction with optimisation routines in order to obtain the optimal ...
Optimal design of symmetric angle-ply laminates subject to nonuniform buckling loads and in-plane restraints

Walker, Mark; Adali, Sarp; Verijenko, Viktor E. (Elsevierhttp://dx.doi.org/10.1016/0263-8231(96)00002-X, 1996)

Optimal buckling designs of symmetrically laminated rectangular plates under in-plane uniaxial loads" which have a nonuniform distribution along the edges are presented. In particular, point loads, partial uniJorm loads ...
Optimal design of symmetric laminates with cut-outs for maximum buckling load

Walker, Mark (Elsevierhttp://dx.doi.org/10.1016/S0045-7949(98)00167-9, 1999)

Finite element solutions are presented for the optimal design of symmetrically laminated rectangular plates with central circular cut-outs subject to a combination of simply supported, clamped and free boundary conditions. ...
Optimization of symmetric laminates for maximum buckling load including the effects of bending-twisting coupling

Walker, Mark; Adali, Sarp; Verijenko, Viktor E. (Elsevierhttp://dx.doi.org/10.1016/0045-7949(95)00138-7, 1996)

Finite element solutions are presented for the optimal design of symmetrically laminated rectangular plates subjected to a combination of simply supported, clamped and free boundary conditions. The design objective is the ...
A particle swarm optimization approach for tuning of SISO PID control loops

Pillay, Nelendran (2008)

Linear control systems can be easily tuned using classical tuning techniques such as the Ziegler-Nichols and Cohen-Coon tuning formulae. Empirical studies have found that these conventional tuning methods result in an ...
A procedure to select the best material combinations and optimally design composite sandwich cylindrical shells for minimum mass

Walker, Mark; Smith, Ryan E. (Elsevierhttp://dx.doi.org/10.1016/j.matdes.2004.10.003, 2006)

A methodology to select the best material combination and optimally design composite sandwich cylinders having fibre reinforced skins and low density cores for minimum mass is described. Sandwich constructions generally ...
A procedure to select the best material combinations and optimally design hybrid composite plates for minimum weight and cost

Walker, Mark; Reiss, Talmon; Adali, Sarp (Taylor & Francishttp://dx.doi.org/10.1080/03052159708940987, 1997)

The optimal layup with least weight or cost for a symmetrically laminated plate subject to a buckling load is determined using a hybrid composite construction. A hybrid construction provides further tailoring capabilities ...
A procedure to select the best material combinations and optimally design hybrid composite plates for minimum weight and cost

Walker, Mark; Reiss, Talmon; Adali, Sarp (Taylor & Francishttp://www.tandfonline.com/doi/pdf/10.1080/03052159708940987, 1997)

The optimal layup with least weight or cost for a symmetrically laminated plate subject to a buckling load is determined using a hybrid composite construction. A hybrid construction provides further tailoring capabilities ...
Process development for co-digestion of toxic effluents : development of screening procedures

Dlamini, Sithembile (2009)

The primary objective of this project was to establish a screening protocol which could be used to access high strength/toxic effluent for toxicity and degradability prior to being disposed in wastewater treatment ...
The purification of corn steep liquor as a fermentation feedstock by ultrafiltration

Govender, Devan (2010)

THE OBJECTIVE of this study was to devise a purification process, using ultrafiltration membranes as the core technology, for the preparation of corn steep liquor (CSL) as a fermentation feedstock. This process inherently ...
Refined theory of laminated anisotropic shells for the solution of thermal stress problems

Verijenko, Viktor E.; Tauchert, T. R.; Shaikh, C.; Tabakov, Pavel Y. (Taylor & Francishttp://www.tandfonline.com/doi/pdf/10.1080/014957399281066, 1999)

A new higher order theory of laminated anisotropic shells for the solution of thermal stress problems that takes into account transverse shear stresses is developed.The theory is based on the kinematic hypotheses that ...
Separation processes for high purity ethanol production

Ngema, Peterson Thokozani (2010)

Globally there is renewed interest in the production of alternate fuels in the form of bioethanol and biodiesel. This is mainly due to the realization that crude oil stocks are limited hence the swing towards more renewable ...
A shape control model for piezo-elastic structures based on divergence free electric displacement

Kekana, Marino; Tabakov, Pavel Y.; Walker, Mark (Elsevierhttp://dx.doi.org/10.1016/S0020-7683(02)00611-X, 2003)

A model simulating the effects of the control potential on the static configuration of a piezo-elastic structure is presented. This model is centred on the electric displacement field, which is shown to be divergence free. ...
A static shape control model for piezo-elastic composite structures

Kekana, Marino (Elsevierhttp://dx.doi.org/10.1016/S0263-8223(02)00184-8, 2003)

This study examines an active control model in which the open circuit mode is assumed. A finite element model in which only the displacement field is approximated is developed. The charge–potential relationship is incorporated ...
Stress distribution in continuously heterogeneous thick laminated pressure vessels

Verijenko, Viktor E.; Adali, Sarp; Tabakov, Pavel Y. (Elsevierhttp://dx.doi.org/10.1016/S0263-8223(01)00112-X, 2001)

Stress analysis of multilayered pressure vessels possessing cylindrical anisotropy and under internal, external and interlaminar pressures is given. The special case when the axis of anisotropy coincides with the axis of ...
The synthesis, structure and properties of polypropylene nanocomposites

Moodley, Vishnu Kribagaran (2007)

Polymer nanocomposites may be defined as structures that are formed by infusing layered-silicate clay into a thermosetting orthermoplastic polymer matrix. The nanocomposites are normally particle-filled polymers for ...
A technique for optimally designing engineering structures with manufacturing tolerances accounted for

Tabakov, Pavel Y.; Walker, Mark (Taylor & Francishttp://dx.doi.org/10.1080/03052150600843308, 2007)

Accurate optimal design solutions for most engineering structures present considerable difficulties due to the complexity and multi-modality of the functional design space. The situation is made even more complex when ...
A technique for optimally designing fibre-reinforced laminated plates under in-plane loads for minimum weight with manufacturing uncertainties accounted for

Walker, Mark; Hamilton, Ryan Jason (Springerhttp://www.springerlink.com/content/m8u02361m2402303/fulltext.pdf, 2006)

A procedure to design symmetrically laminated plates under buckling loads for minimum mass with manufacturing uncertainty in the ply angle, which is the design variable, is described. A minimum buckling load capacity is ...
A technique for optimally designing fibre-reinforced laminated plates with manufacturing uncertainties for maximum buckling strength

Walker, Mark; Hamilton, Ryan Jason (Taylor & Francishttp://dx.doi.org/10.1080/03052150412331298371, 2005)

This article describes a procedure to design symmetrically laminated plates for maximum buckling load with manufacturing uncertainty in the ply angle, which is the design variable. It is assumed that the probability of any ...
A technique for stiffness improvement by optimization of fiber steering in composite plates

Tabakov, Pavel Y.; Walker, Mark (Springerhttp://www.springerlink.com/content/h813074n588177w1/fulltext.pdf, 2010)

A methodology for stiffness improvement by optimal orientation of fibers placed using fiber steering techniques of composite plates has been developed and is described here. A genetic algorithm is employed to determine the ...

Now showing items 34-53 of 59

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