scholarly journals Bree's diagram of a functionally graded thick-walled cylinder under thermo-mechanical loading considering nonlinear kinematic hardening

2018 ◽  
Vol 12 ◽  
pp. 644-654 ◽  
Author(s):  
Mohsen Damadam ◽  
Reza Moheimani ◽  
Hamid Dalir
Keyword(s):  
Mechanical Loading ◽  
Kinematic Hardening ◽  
Functionally Graded ◽  
Walled Cylinder

Compressive residual stress field in functionally graded material rotating disc under thermo-mechanical loading

2017 ◽  
Vol 36 (17) ◽  
pp. 1239-1253
Author(s):  
Kaveh Oghbaei ◽  
Hamid Ekhteraei Toussi
Keyword(s):  
Residual Stress ◽  
Mechanical Loading ◽  
Functionally Graded Material ◽  
Compressive Residual Stress ◽  
Kinematic Hardening ◽  
Functionally Graded ◽  
Stress Fields ◽  
Elastic Behavior ◽  
Rotating Disc ◽  
Graded Material

Residual stress fields in functionally graded material rotating disc under thermo-mechanical loading is obtained by using the variable material properties method. The mixture model of Tamura–Tomato–Ozawa is used to correlate the overall mechanical behavior to the behavior of the constitutive phases in the construction of a rotating disc. The elastic-linearly kinematic hardening plastic material model is used for the metallic phase and a linear perfectly elastic behavior is assumed for the ceramic part. A finite element method analysis by using ABAQUS software is performed to assess the validity of the proposed method. The effect of velocity and temperature on the residual stress fields are studied. A study also worked out to see the effect of different parameters upon the residual stress fields. The effect of reverse yielding on the transposition of the compressive residual stress zone is investigated.

Study on the Best Reinforcement Arrangement of Thick-Walled Cylinder

2011 ◽  
Vol 94-96 ◽  
pp. 2009-2014
Author(s):  
Yun Qian Xu ◽  
Ai Zhong Lu ◽  
Ning Zhang ◽  
Pan Cui
Keyword(s):  
Stress State ◽  
Bearing Capacity ◽  
Functionally Graded Material ◽  
Radial Direction ◽  
Plain Concrete ◽  
Functionally Graded ◽  
Reinforcement Ratio ◽  
Uniform Load ◽  
Graded Material ◽  
Walled Cylinder

In order to improve the ultimate bearing capacity, In this paper, the theory of functionally graded material is introduced. This paper simulate thick-walled cylinder with functionally graded characteristics through the analysis of using different reinforced ways along the radial direction. The author analyzes the stress state of the thick-walled cylinder with plain concrete and three different reinforced ways under the radical uniform load. Comparisons and evaluations are provided based on ANSYS results. The paper provide a reasonable reinforced way that is a larger reinforcement ratio near the outer and a smaller reinforcement ratio near the inner and is different with the traditional way. But the worst reinforcement arrangement is that a larger reinforcement ratio near the inner and a smaller reinforcement ratio near the outer. The conclusion shows that the principle that larger reinforcement ratio should be adopted where the tangential stress is larger is not suitable to the thick-walled cylinder.

Dynamic Behavior of FGM Doubly Curved Panel due to Mechanical Loading

2019 ◽  
Vol 950 ◽  
pp. 200-204
Author(s):  
Guang Ping Zou ◽  
Nadiia Dergachova
Keyword(s):  
Mechanical Loading ◽  
Volume Fraction ◽  
Equivalent Stress ◽  
Functionally Graded ◽  
Excitation Mode ◽  
Simply Supported ◽  
Curved Panel ◽  
Von Mises Equivalent Stress ◽  
Von Mises ◽  
Doubly Curved

This study presents the dynamic response analyze of a simply supported and isotropic functionally graded (FG) double curved panel under mechanical loading. The aim of the research was to investigate mechanical behavior in a FGM curved panel due to different excitation mode of dynamic loading. The novelty of this research is an investigation of von Mises equivalent stress distribution in double curved panel due to different excitation mode. Computed results are found to agree well with the results reported in the literature. Moreover, influence of volume fraction of the material is studied.

Creep Analysis of Functionally Graded Material Thick-Walled Cylinder

2013 ◽  
Vol 315 ◽  
pp. 867-871 ◽  
Author(s):  
Saifulnizan Jamian ◽  
Hisashi Sato ◽  
Hideaki Tsukamoto ◽  
Yoshimi Watanabe
Keyword(s):  
Cross Section ◽  
Volume Fraction ◽  
Rectangular Cross Section ◽  
Functionally Graded ◽  
Graded Materials ◽  
Incremental Approach ◽  
Creep Analysis ◽  
Graded Material ◽  
Ring Elements ◽  
Walled Cylinder

In this paper, creep analysis for a thick-walled cylinder made of functionally graded materials (FGMs) subjected to thermal and internal pressure is carried out. The structure is replaced by a system of discrete rectangular cross-section ring elements interconnected along circumferential nodal circles. The property of FGM is assumed to be continuous function of volume fraction of material composition. The creep behavior of the structures is obtained by the use of an incremental approach. The obtained results show that the property of FGM significantly influences the stress distribution along the radial direction of the thick-walled cylinder as a function of time.

scholarly journals Safety Analysis Using Lebesgue Strain Measure of Thick-Walled Cylinder for Functionally Graded Material under Internal and External Pressure

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
A. K. Aggarwal ◽  
Richa Sharma ◽  
Sanjeev Sharma
Keyword(s):  
Circular Cylinder ◽  
Functionally Graded Material ◽  
Safety Analysis ◽  
External Pressure ◽  
Functionally Graded ◽  
Transition Theory ◽  
Strain Measure ◽  
Graded Material ◽  
Homogeneous Cylinder ◽  
Walled Cylinder

Safety analysis has been done for thick-walled circular cylinder under internal and external pressure using transition theory which is based on the concept of generalized principal Lebesgue strain measure. Results have been analyzed theoretically and discussed numerically. From the analysis, it can be concluded that circular cylinder made of functionally graded material is on the safer side of the design as compared to homogeneous cylinder with internal and external pressure, which leads to the idea of “stress saving” that minimizes the possibility of fracture of cylinder.

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