Method of Solving the Problem of Thermoradiation Plasticity for Layered Axisymmetric Bodies Made of Isotropic and Orthotropic Materials*

2021 ◽  
Author(s):  
M. E. Babeshko ◽  
V. G. Savchenko
Keyword(s):  
Orthotropic Materials ◽  
Isotropic And Orthotropic Materials ◽  
Axisymmetric Bodies

Isoparametric Graded Finite Elements for Nonhomogeneous Isotropic and Orthotropic Materials

2002 ◽  
Vol 69 (4) ◽  
pp. 502-514 ◽  
Author(s):  
Jeong-Ho Kim ◽  
G. H. Paulino
Keyword(s):  
Finite Elements ◽  
Material Property ◽  
Poisson’S Ratio ◽  
Orthotropic Plate ◽  
Poisson's Ratio ◽  
Orthotropic Materials ◽  
Finite Width ◽  
Infinite Length ◽  
Graded Materials ◽  
Isotropic And Orthotropic Materials

Graded finite elements are presented within the framework of a generalized isoparametric formulation. Such elements possess a spatially varying material property field, e.g. Young’s modulus E and Poisson’s ratio ν for isotropic materials; and principal Young’s moduli E11,E22, in-plane shear modulus G12, and Poisson’s ratio ν12 for orthotropic materials. To investigate the influence of material property variation, both exponentially and linearly graded materials are considered and compared. Several boundary value problems involving continuously nonhomogeneous isotropic and orthotropic materials are solved, and the performance of graded elements is compared to that of conventional homogeneous elements with reference to analytical solutions. Such solutions are obtained for an orthotropic plate of infinite length and finite width subjected to various loading conditions. The corresponding solutions for an isotropic plate are obtained from those for the orthotropic plate. In general, graded finite elements provide more accurate local stress than conventional homogeneous elements, however, such may not be the case for four-node quadrilateral (Q4) elements. The framework described here can serve as the basis for further investigations such as thermal and dynamic problems in functionally graded materials.

Influence of Stiffeners on Fracture Parameters in Isotropic and Orthotropic Materials

2012 ◽  
Vol 2 (8) ◽  
pp. 157-159
Author(s):  
Dr. P. Ravinder Reddy ◽  
◽  
P. RamaLakshmi P. RamaLakshmi ◽  
P. Anjani Devi P. Anjani Devi
Keyword(s):  
Orthotropic Materials ◽  
Fracture Parameters ◽  
Isotropic And Orthotropic Materials
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