619 Advance in Modeling and Analysis of Composite and FGM Structures

Justin Murin, Slovak University of Technology in Bratislava
Stephan Kugler, University of Applied Sciences Wiener Neustadt
Evangelos Sapountzakis, National Technical University of Athens
Structures with spatially inhomogeneous material properties are of great practical importance in modern product and system design. Functionally Graded Materials (FGMs) are formed by a continuous gradation of two or more constituents over the physical volume, while composites show a discontinuous variation of constitutive properties. The specific variations can be tailored properly in order to achieve optimized characteristics of the component. The numerical assessment of the mechanical or multiphysical behavior is a critical issue in the product development process and new and enhanced strategies have to be developed. Accurate and efficient structural finite elements like beams, plates and shells require suitable homogenization procedures to arrive at effective stiffness quantities for the membrane, bending, transverse and torsional shearproperties accompanied with a suitable warping stiffness regarding non-uniform torsion. Higher order and hybrid continuum formulationsin connection with an enrichment of approximation space are applied to encounter for thickness stretching and deformable cross-sections (warping and distortional effects). At the boundary between computational mechanics, computational physics and applied mathematics, the minisymposium will offer a framework for discussing new ideas in this emerging field with emphasis on, but not limited to the following:
• Enhanced shear elastic beam finite elements accompanied with suitable homogenization procedures
• Novel concepts regarding non-uniform torsion
• Elastic foundations and geometrical nonlinearities in beams and shells
• Efficient shell formulations accompanied with drilling rotations and thickness stretching
• Linear and nonlinear problems of elastostatics and elastodynamics
• The multiphysical regime (thermo-elasticity and the piezo-electric effect, electro-thermal-structural problems, the Thomson and Seebeck effect, electromagnetic-structural analysis, etc.)
• EXtended/Generalized Finite Element Methods (X/GFEM), the Interface-Enriched Generalized Finite Element Method (IGFEM), and the p-version of the Finite Element Method (p-FEM)
• Stress extraction and super-convergent patch recovery
• Measurement technology and verification strategies for numerical procedures