Optimization of Variable Stiffness Laminates and Sandwiches Undergoing Impulsive Dynamic Loading

Free Vibration Analysis of Variable Stiffness Composite Laminates with Flat and Folded Shapes

In this article, free vibration analysis of variable stiffness composite laminate (VSCL) plates with flat and folded shapes is studied. In order to consider the concept of variable stiffness, in each layer of these composite laminated plates, the curvilinear fibers are used instead of straight fibers. The analysis is based on a semi-analytical finite strip method which follows classical laminat...

Buckling Analysis of Variable Stiffness Composite Laminates by Semi-Analytical Finite Strip Method

Plates made of laminated composite materials with variable stiffness can have wide applications in various branches of engineering due to such advantages as high strength /stiffness to weight ratio. In these composites, curved fibers are used to reinforce each lamina instead of the straight fibers. In this paper, the application of finite strip method for the buckling analysis of moderately thi...

Variable Stiffness Legs for Robust, Efficient, and Stable Dynamic Running

Humans and animals adapt their leg impedance during running for both internal (e.g. loading) and external (e.g. surface) changes. To date the mechanical complexities of designing usefully robust tunable passive compliance into legs has precluded their implementation on practical running robots. This work describes the design of novel, structure-controlled stiffness legs for a hexapedal running ...

Investigation of Impulsive Extremals in Applied Models of Dynamic Optimization

A first damage modelling of SiC-SiC laminates under dynamic loading

A first mesomodelling, which allows us to describe the mechanical behaviour of an elementary ply within a SiC-SiC laminate under dynamic loading, is proposed. Questions related to its identification and its use for the prédiction of the dynamic fracture of laminated structures are discussed.