Using piezoelectric excitation, the resonance frequencies of microstructures made of monocrystalline silicon or metal alloys are experimentally determined. Several resonance frequencies are found for each microstructure. A scanning vibrometer allows to determine the corresponding modal shape for frequencies lying between 40 Hz and 160 kHz. In combination with a numerical analysis, this data all...

Abstract Despite the engineering importance of creep composite materials and other fibrous anisotropic load-carrying like wood, there is an apparent lack in useful experimental data 3D. Proposed models are generally not commensurate with realistic from characterization. In present study, orthotropic linear viscoelastic model presented examined on its performance predicting time-dependent nature...

Journal of Applied Mathematics and Computational Mechanics, Prace Naukowe Instytutu Matematyki i Informatyki, Politechnika Częstochowska, Scientific Research the Institute Computer Science, Czestochowa University Technology

In this paper static analysis of orthotropic functionally graded material (FGM) cylinders with finite length was carried out by a mesh-free method. MLS shape functions are used for approximation of displacement field in the weak form of equilibrium equation and essential boundary conditions are imposed by transformation method. In this simulation, an ax symmetric model is used. Mechanical prope...

We propose a decomposition of constitutive relations into crack-driving and persistent portions, specifically designed for materials with anisotropic/orthotropic behavior in the phase field approach to fracture account tension-compression asymmetry. This follows variational framework, satisfying orthogonality condition anisotropic materials. implies that present model can be applied arbitrary e...

This paper presents a new continuum shape sensitivity method for calculating the mixed-mode stress-intensity factors of a stationary crack in two-dimensional, linear-elastic, orthotropic functionally graded materials with arbitrary geometry. The method involves the material derivative concept taken from continuum mechanics, the mutual potential energy release rate, and direct differentiation. S...

In this paper, free vibration analysis of orthotropic functionally graded material (FGM) cylinders was carried out by a Mesh-Free method. In this analysis, moving least squares shape functions are used for approximation of displacement field in the weak form of equilibrium equation. Essential boundary conditions are imposed by transformation method. In this simulation, an axisymmetric model is ...

The present study concerns experimental and fin ite element analysis of carbon epoxy and carbon epoxy carbon nanotube composites to estimate interlaminar shear strength. Mechanical properties such as elastic ratios, thickness are varied for double notched specimen and the corresponding deflections and interlaminar shear strengths are estimated by ANSYS. From simple ru le of mixtures, equivalent...