نتایج جستجو برای: functional graded materials fgm
تعداد نتایج: 1024457 فیلتر نتایج به سال:
Hydroxyapatite (HA) and bioglass (BG) ceramics have become of prime importance in bone tissue engineering. Besides the appropriate composition, microstructure replacement plays a crucial role. In present work, particle composites functionally graded material (FGM) based on HA BG prepared by electrophoretic deposition were thoroughly characterised terms preparation method, sintering process, pha...
Functionally graded material (FGM) arches may be subjected to a locally radial load and have different distributions leading nonlinear in-plane buckling behavior. Little studies is presented about effects of the type on FGM under in literature insofar. This paper focuses investigating behavior fixed uniformly distributed incorporating distributions. New theoretical solutions for limit point bif...
This paper analyses free vibrations of framed nanostructures made Functionally Graded Material (FGM) based on the Nonlocal Elastic Theory (NET) and Dynamic Stiffness Method (DSM). FGM characteristics vary nonlinearly throughout height beam element. The NET considers nonlocal parameter that perfectly captured size effect nanostructures. However, makes paradoxes in bending vibration behaviour wit...
in this paper, a nonlinear free vibration analysis of thin annular functionally graded (fg) plate integrated with two uniformly distributed actuator layers made of piezoelectric (pzt4) material on the top and bottom surfaces of the annular fg plate is presented based on kirchhoff plate theory. the material properties of the fgm core plate are assumed to be graded in the thickness direction acco...
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BACKGROUND The World Health Organisation (WHO) estimates that 100-140 million girls and women have undergone female genital mutilation or cutting (FGM/C). FGM/C is an ancient cultural practice prevalent in 26 countries in Africa, the Middle East and Asia. With increased immigration, health professionals in high income countries including UK, Europe, North America and Australia care for women an...
This research develops thermo-elastic analysis of a functionally graded cylinder under thermo-mechanical loadings. Heat conduction equation in cylindrical coordinate system is solved. Thermal conductivity coefficient is graded along the radial direction. By considering a symmetric distribution of temperature, loading and boundary conditions, strain-displacement and stress-strain relations can b...
Safety analysis has been done for the torsion of a functionally graded thick-walled circular cylinder under internal and external pressure subjected to thermal loading. In order to determine stresses the concept of Seth’s transition theory based on generalized principal strain measure has been used. This theory simplifies the set of mechanical equations by mentioning the order of the measure of...
Three-dimensional enriched finite elements are used to compute mixed-mode stress intensity factors (SIFs) for three-dimensional cracks in elastic functionally graded materials (FGMs) that are subject to general mixed-mode loading. The method, which advantageously does not require special mesh configuration/modifications and post-processing of finite element results, is an enhancement of previou...
In 1992, a comprehensive survey of current Federal materials research programs and plans for new initiatives, known as the Advanced Materials and Processing Program (AMPP), was developed under the auspices of the Office of Science and Technology Policy. The goal of the AMPP is to improve the manufacture and performance of materials to enhance the nation's quality of life, security, industrial p...
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