Mechanics of Advanced Materials and Structures 

About: Mechanics of Advanced Materials and Structures is an academic journal published by Taylor & Francis. The journal publishes majorly in the area(s): Finite element method & Engineering. It has an ISSN identifier of 1537-6494. Over the lifetime, 2963 publications have been published receiving 31498 citations. The journal is also known as: MAMS.

A novel five-variable refined plate theory for vibration analysis of functionally graded sandwich plates

Abstract: In this article, a new five-variable refined plate theory for the free vibration analysis of functionally graded sandwich plates is developed. By dividing the transverse displacement into bending, shear, and thickness stretching parts, the number of unknowns and governing equations of the present theory is reduced, and hence, makes it simple to use. Indeed, the number of unknown functions involved in the present theory is only five, as opposed to six or more in the case of other shear and normal deformation theories. The theory accounts for hyperbolic distribution of the transverse shear strains, and satisfies the zero traction boundary conditions on the surfaces of the plate without using a shear correction factor. Two common types of functionally graded material (FGM) sandwich plates, namely, the sandwich with FGM facesheet and homogeneous core and the sandwich with homogeneous facesheet and FGM core, are considered. The equations of motion are obtained using Hamilton's principle. Numerical resu...

Analysis of Composite Plates Using a Layerwise Theory and Multiquadrics Discretization

Abstract: A layerwise shear deformation theory for composite laminated plates is discretized using multiquadrics. This new type of meshless method considers radial basis functions as the approximation method for both the differential governing equations and the boundary conditions. The combination of this layerwise theory and the multiquadrics discretization method allows a very accurate prediction of the field variables. Laminated composite and sandwich plates are analyzed.

Smart Materials, Precision Sensors/Actuators, Smart Structures, and Structronic Systems

Abstract: Many electroactive functional materials have been used in small- and microscale transducers and precision mechatronic control systems for years. It was not until the mid-1980s that scientists started integrating electroactive materials with large-scale structures as in situ sensors and/or actuators, thus introducing the concept of smart materials, smart structures, and structronic systems. This paper provides an overview of present smart materials and their sensor/actuator/structure applications. Fundamental multifield optomagnetopiezoelectric-thermoelastic behaviors and novel transducer technologies applied to complex multifield problems involving elastic, electric, temperature, magnetic, light, and other interactions are emphasized. Material histories, characteristics, material varieties, limitations, sensor/actuator/structure applications, and so forth of piezoelectrics, shape-memory materials, electro- and magnetostrictive materials, electro- and magnetorheological fluids, polyelectrolyte gel...

Self-Healing of Poly(Ethylene-co-Methacrylic Acid) Copolymers Following Projectile Puncture

Abstract: Several poly(ethylene-co-methacrylic acid) copolymers have shown the unique ability to self-heal following projectile puncture, with the punctured site subsequently holding pressures in excess of 3 MPa. Four specific materials (ionomers and non-ionomer copolymers) were examined to determine if ionic interactions are responsible for puncture reversal. A range of novel experiments including peel, projectile, and quantitative post-puncture testing were used to determine that ionic content is not necessary for the healing response. Mechanistically, it was concluded that healing occurs through at least a two-stage process of melt elastic recovery followed by sealing and polymer chain interdiffusion at the damaged site.

Shear Deformation Plate and Shell Theories: From Stavsky to Present

Abstract: In this paper, a review of the shear deformation plate and shell theories is presented and a consistent third-order theory for composite shells is proposed. The discussion of plate and shell theories from Stavsky to the present is largely a review of various theories for modeling laminated shells, including shear effects and some analytical studies. Following this discussion, a finite element formulation of the proposed theory is developed. The formulation has seven displacement functions satisfying the tangential traction-free conditions on the inner and outer surfaces of the shell. Exact computations of stress resultants are carried out through numerical integration of material stiffness coefficients of the laminate. Numerical examples are presented for typical benchmark problems involving isotropic and composite plates, and cylindrical and spherical shells.