نتایج جستجو برای: نانوصفحه fgm

تعداد نتایج: 1532  

In this article, vibration characteristics and the parametric instability of functionally graded material (FGM) plates with cyclic loading in a hygrothermal field are discussed. The plate element is modeled in a finite element by applying the third-order shear deformation hypothesis. The mathematical formulation of the FGM plate is made with two material constituents by applying the power rule ...

Journal: :international journal of civil engineering 0
m.e. torki phd student, zachry department of civil engineering, texas a&m university, college station, tx 77843, usa m. taghi kazemi associate professor, department of civil engineering, sharif university of technology, tehran, islamic republic of iran s.b. talaeitaba assistant professor of azad university, department of civil engineering, khomeinishahr azad university, isfahan, islamic republic of iran

the effect of axial deformation of shell particles on the dynamic instability (flutter) of cantilevered cylindrical shells made of functionally graded materials (fgm) under an end axial follower force is addressed. to this end, at first, results for free vibration of fgm cylindrical shells were verified with previous outcomes and they were in very good agreement. then, the effect of axial defor...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه هرمزگان - دانشکده مهندسی 1390

در این پایان نامه یک کره پوشش دار با پوشش fgm در محیط بی نهایت و ایزوتروپ مفروض است. با استفاده از توابع پتانسیل لامه و بسط توابع ویژه مساله انتشار امواج پیرامون کره پوشش دار با پوشش fgm مورد مطالعه قرار می گیرد. رفتار مصالح الاستیک خطی و تغییر شکل ها در محدوده تغییر شکل های کوچک قرار دارد. عمده مسائل بررسی شده به کره با پوشش غیر fgm پرداخته اند. همچنین مطالعات انجام شده در زمینه کره با پوشش fg...

2016
Xingchen Liu

Spatial variation of material structures is a principal mechanism for creating and controlling spatially varying material properties in nature and engineering. While the spatially varying homogenized properties can be represented by scalar and vector fields on the macroscopic scale, explicit microscopic structures of constituent phases are required to facilitate the visualization, analysis and ...

2001
Jane Njeri Chege Ian Askew Jennifer Liku

The opinions expressed herein are those of the authors and do not necessarily reflect the view of USAID. DEDICATION The late Leah Muuya (died December 2000) has left an invaluable imprint in the struggle to free young girls from the practice of Female Genital Mutilation. As Maendeleo Ya Wanawake Organisation's (MYWO) Programme Officer for Harmful Traditional Practices, Leah spearheaded activiti...

Journal: :Mathematical modeling and computing 2021

In this work, an implicit algorithm is used for analyzing the free dynamic behavior of Functionally Graded Material (FGM) plates. The Third order Shear Deformation Theory (TSDT) to develop proposed model. contribution, formulation written without any homogenization technique as rule mixture. Hamilton principle establish resulting equations motion. For spatial discretization based on Finite Elem...

Journal: :Philosophical transactions. Series A, Mathematical, physical, and engineering sciences 2008
M Kashtalyan M Menshykova

The concept of functionally graded material (FGM) is currently actively explored in coating design for the purpose of eliminating the mismatch of thermomechanical properties at the interfaces and thus increasing the resistance of coatings to functional failure. In the present paper, three-dimensional elastic deformation of a functionally graded coating/substrate system of finite thickness subje...

2012
Obi Anselm Okwudili Onoh Robinson Chukwudi

Female genital mutilation (FGM) is the partial or total removal of the female external genitalia or other deliberate injury to the female genital organs, either for cultural or non-therapeutic reasons. This barbaric act is accompanied by a variety of complications ranging from hemorrhage, fracture, infective complications, gynetresia, with its attendant sexual and obstetric difficulties, and de...

Journal: :Women 2022

The prevalence of female genital mutilation/cutting (FGM/C) in Nigeria is on the rise, although practice has no known medical/health benefits. This study aims to assess FGM/C’s effect breastfeeding outcomes and identify role women’s attitudes their access healthcare services these relationships. Associations between FGM/C were measured using multi-logistic regression. About 32% women underwent ...

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