نتایج جستجو برای: homogeneous orthotropic material

تعداد نتایج: 431842  

Journal: :Wood Science and Technology 2022

This paper deals with a new hybrid method coupling an analytical and finite element approach for the calculation of ultrasonic wave propagation velocity in orthotropic materials applied to timber elements. First, consists integrating model described by considering misalignment direction main reference. A second step calls implementation approach. allows computation assuming heterogeneous materi...

2003
Hwai-Chung Wu Bin Mu

Scale factors (SFs) are widely used in engineering applications to describe the stress concentration factor (SCF) of a finite width isotropic plate with a circular hole and under uniaxial loading. In this paper, these SFs were also found to be valid in an isotropic plate with biaxial loading and an isotropic cylinder with uniaxial loading or internal pressure, if a suitable hole to structure di...

Journal: :Philosophical transactions. Series A, Mathematical, physical, and engineering sciences 2009
Gerhard A Holzapfel Ray W Ogden

In this paper, we first of all review the morphology and structure of the myocardium and discuss the main features of the mechanical response of passive myocardium tissue, which is an orthotropic material. Locally within the architecture of the myocardium three mutually orthogonal directions can be identified, forming planes with distinct material responses. We treat the left ventricular myocar...

Ahmad Assempour Hashem Zamanian Mehdi Bostan Shirin

In this work, an inverse finite element formulation was modified for considering material anisotropy in obtaining blank shape and forming severity of deep drawn orthotropic parts. In this procedure, geometry of final part and thickness of initial blank sheet were known. After applying ideal forming formulations between material points of initial blank and final shape, an equation system was obt...

Journal: :Journal of the Japan Society for Aeronautical and Space Sciences 1989

Journal: :Journal of the Japan Society for Aeronautical and Space Sciences 1989

1972
M. A. BIOT

The theory of crack propagation in orthotropic media is developed by applying the theory of incremental deformations in the vicinity of a state of initial stress. This is carried out in the context of a new approach to analytical methods and a physical analysis which takes into account plastic deformation under prestress. The state of initial stress is triaxial along the directions of elastic s...

2011
Julian L. Davis Elizabeth R. Dumont David S. Strait Ian R. Grosse

The ability to incorporate detailed geometry into finite element models has allowed researchers to investigate the influence of morphology on performance aspects of skeletal components. This advance has also allowed researchers to explore the effect of different material models, ranging from simple (e.g., isotropic) to complex (e.g., orthotropic), on the response of bone. However, bone's compli...

Journal: :The Journal of the Acoustical Society of America 2008
Shuangqin Liu Robert D White

In this paper, two sets of experimental results to extract the two effective elastic moduli, the effective shear modulus, and the effective Poisson's ratio for the gerbil cochlear partition are analyzed. In order to accomplish this, a geometrically nonlinear composite orthotropic plate model is employed. The model is used to predict both out-of-plane and in-plane motion of the partition under a...

M Foroutan, R Moradi-Dastjerdi

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 ...

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