Stresses in Nonhomogeneous Cylindrically Anisotropic Elastic Cylinder

1977 ◽  
Vol 44 (4) ◽  
pp. 774-776
Author(s):  
Subhas Chandra Roy
Keyword(s):  
Mechanical Properties ◽  
Plane Strain ◽  
Linear Theory ◽  
Radial Displacement ◽  
Three Dimensional ◽  
Elastic Cylinder ◽  
Theory Of Elasticity ◽  
Cylindrical Anisotropy ◽  
Anisotropic Elastic ◽  
Cylindrically Anisotropic

The object of this Note is to determine the radial displacement and relevant stresses in a cylinder (plane strain) on the basis of three-dimensional linear theory of elasticity. The material of the structure is orthotropic with cylindrical anisotropy and, in addition, is continuously inhomogeneous with mechanical properties varying along the radius.

Long Cylindrical Tube Subjected to Two Diametrically Opposite Loads

1969 ◽  
Vol 20 (4) ◽  
pp. 365-381 ◽  
Author(s):  
J. C. Yao
Keyword(s):  
Stress State ◽  
Stress Concentration ◽  
Stress Function ◽  
Radial Displacement ◽  
Theoretical Study ◽  
Three Dimensional ◽  
Cylindrical Tube ◽  
Theory Of Elasticity ◽  
Test Results ◽  
Dimensional Theory

SummaryA theoretical study is made of the problem of a long, thick cylindrical tube subjected to two equal and diametrically opposite normal loads. The stress state is analysed by the three-dimensional theory of elasticity, with the Papkovich and Neuber stress-function approach. Numerical results for stresses and radial displacement are obtained to show the nature of stress concentration in the neighbourhood of the load. Some related experiments using the photoelasticity technique are also accomplished. Favourable correlation is shown between the theory and the test results.

scholarly journals Hypoplastic Interface Model considering Plane Strain Condition and Surface Roughness

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Yong-Gwang Jong ◽  
Yang Liu ◽  
Zixuan Chen ◽  
Pieride Mabe Fogang
Keyword(s):  
Experimental Data ◽  
Mechanical Properties ◽  
Plane Strain ◽  
Contact Surface ◽  
Soil Structure ◽  
Dimensional Space ◽  
Three Dimensional ◽  
Interface Problem ◽  
Hypoplastic Model ◽  
Improved Model

The soil-structure interface problem is an important part of soil-structure interaction research. These problems are mostly three-dimensional space problems, which is more complex to solve. In this paper, reduced stress and strain rate vectors are incorporated into the explicitly granular hypoplastic model by considering the plane strain state precisely. In addition, considering the important influence of roughness on the mechanical properties of contact surface, an improved hypoplastic model is established by incorporating the influence of roughness into the hypoplastic model, and the applicability of the new improved model is validated by comparing with the simulation results of the Mohr–Coulomb model, the explicitly granular hypoplastic models, and the experimental data. The results indicate that the improved model can be utilized to reflect the nonlinearity of the mechanical properties of the contact surface, which is in good agreement with the experimental data.

scholarly journals Identification of Inhomogeneous Residual Stress State in Elastic Cylinder within the Framework of Plane Strain

2014 ◽  
Vol 996 ◽  
pp. 404-408 ◽  
Author(s):  
Ivan V. Bogachev ◽  
Vladimir Vladimirovich Dudarev ◽  
Rostislav Dmitrievich Nedin ◽  
Alexander Ovanesovich Vatulyan
Keyword(s):  
Residual Stress ◽  
Stress State ◽  
Plane Strain ◽  
Radial Displacement ◽  
Elastic Cylinder ◽  
Outer Radius ◽  
Residual Stress State ◽  
Acoustic Techniques

The problem on radial oscillations of an elastic cylinder with inhomogeneous residual stress (RS) is considered. Two acoustic techniques of RS reconstructing are suggested. Within the framework of the first method, a set of radial displacement values is assumed to be known, while the frequency is fixed. Within the framework of the second method, the radial displacement value at the outer radius is assumed to be known for a set of frequencies. The examples of numerical identification experiments are presented.

Biotemplated facile synthesis of three‐dimensional micro/nanoporous tin oxide: improving the flammable and mechanical properties of flexible PVC

2019 ◽  
Vol 14 (8) ◽  
pp. 828-830 ◽  
Author(s):  
Weihua Meng ◽  
Weihong Wu ◽  
Weiwei Zhang ◽  
Luyao Cheng ◽  
Yunhong Jiao ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tin Oxide ◽  
Three Dimensional ◽  
Facile Synthesis

scholarly journals Is Dialdehyde Chitosan a Good Substance to Modify Physicochemical Properties of Biopolymeric Materials?

2021 ◽  
Vol 22 (7) ◽  
pp. 3391
Author(s):  
Sylwia Grabska-Zielińska ◽  
Alina Sionkowska ◽  
Ewa Olewnik-Kruszkowska ◽  
Katarzyna Reczyńska ◽  
Elżbieta Pamuła
Keyword(s):  
Mechanical Properties ◽  
Tissue Engineering ◽  
Physicochemical Properties ◽  
Silk Fibroin ◽  
Three Dimensional ◽  
Microscopy Imaging ◽  
Maximum Deformation ◽  
One Step ◽  
Chitosan Blends ◽  
Fourier Transfer Infrared Spectroscopy

The aim of this work was to compare physicochemical properties of three dimensional scaffolds based on silk fibroin, collagen and chitosan blends, cross-linked with dialdehyde starch (DAS) and dialdehyde chitosan (DAC). DAS was commercially available, while DAC was obtained by one-step synthesis. Structure and physicochemical properties of the materials were characterized using Fourier transfer infrared spectroscopy with attenuated total reflectance device (FTIR-ATR), swelling behavior and water content measurements, porosity and density observations, scanning electron microscopy imaging (SEM), mechanical properties evaluation and thermogravimetric analysis. Metabolic activity with AlamarBlue assay and live/dead fluorescence staining were performed to evaluate the cytocompatibility of the obtained materials with MG-63 osteoblast-like cells. The results showed that the properties of the scaffolds based on silk fibroin, collagen and chitosan can be modified by chemical cross-linking with DAS and DAC. It was found that DAS and DAC have different influence on the properties of biopolymeric scaffolds. Materials cross-linked with DAS were characterized by higher swelling ability (~4000% for DAS cross-linked materials; ~2500% for DAC cross-linked materials), they had lower density (Coll/CTS/30SF scaffold cross-linked with DAS: 21.8 ± 2.4 g/cm3; cross-linked with DAC: 14.6 ± 0.7 g/cm3) and lower mechanical properties (maximum deformation for DAC cross-linked scaffolds was about 69%; for DAS cross-linked scaffolds it was in the range of 12.67 ± 1.51% and 19.83 ± 1.30%) in comparison to materials cross-linked with DAC. Additionally, scaffolds cross-linked with DAS exhibited higher biocompatibility than those cross-linked with DAC. However, the obtained results showed that both types of scaffolds can provide the support required in regenerative medicine and tissue engineering. The scaffolds presented in the present work can be potentially used in bone tissue engineering to facilitate healing of small bone defects.

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