Numerical analysis of the mechanical behaviour of reinforced thermoplastic pipes under combined external pressure and bending

2015 ◽  
Vol 131 ◽  
pp. 453-461 ◽  
Author(s):  
Kuang Yu ◽  
E.V. Morozov ◽  
M.A. Ashraf ◽  
K. Shankar
Keyword(s):  
Numerical Analysis ◽  
Mechanical Behaviour ◽  
External Pressure

scholarly journals Effect of the mechanical properties and mode loading on the mechanical behaviour of weldment: a numerical analysis

2013 ◽  
Vol 16 (4) ◽  
pp. 853-859 ◽  
Author(s):  
Meddah Hadj Miloud ◽  
Ould chikh Bahri ◽  
Benhamena Ali ◽  
Benguediab Mohamed ◽  
Bouchouicha Benattou
Keyword(s):  
Mechanical Properties ◽  
Numerical Analysis ◽  
Mechanical Behaviour

Stability of Elastic Orthotropic Circular Cylindrical Vessels

2010 ◽  
Author(s):  
Krzysztof Magnucki ◽  
Leszek Wittenbeck
Keyword(s):  
Numerical Analysis ◽  
Critical Pressure ◽  
Linear Analysis ◽  
External Pressure ◽  
Second Step ◽  
Nonlinear Buckling ◽  
Post Buckling ◽  
Analytical Formulas ◽  
Linear And Nonlinear ◽  
Nonlinear Buckling Analysis

This paper is devoted to stability investigation of orthotropic circular cylindrical vessels subjected to external pressure. An untypical orthotropic structure that consist of two layers: smooth-external and corrugated-internal is proposed. The investigation is divided into two steps. In first one analytical formulas describing buckling behaviour are derived. In second step numerical analysis is performed by using FEM to obtain the correlation between analytical and numerical results. Authors also considered linear and nonlinear buckling analysis. During the linear analysis the influence of vessel geometry on critical pressure is determined. Nonlinear analysis is carried out to create equilibrium paths which show the behaviour of vessels in post-buckling state. The results of the analysis are presented in figures.

scholarly journals The behaviour of aluminum alloy 1050 sheet subjected to impact and perforation process: Experimental and numerical approaches

2021 ◽  
Vol 348 ◽  
pp. 01010
Author(s):  
Amine Bendarma ◽  
Salwa EL Garouge ◽  
Hajar Akhzouz ◽  
Said Kardellass ◽  
Salim Bouslikhane ◽  
...  
Keyword(s):  
High Pressure ◽  
Aluminum Alloy ◽  
Numerical Analysis ◽  
Mechanical Behaviour ◽  
Dynamic Load ◽  
Impact Loading ◽  
Aluminum Sheets ◽  
Gas Gun ◽  
Wide Range ◽  
Numerical Approaches

The mechanical behavior of aluminum alloy under impact loading using different configurations is described. Perforation tests are referred in this work at wide ranges of specimen using several projectile shapes to analyse their effect on the ballistic curve VR-V0 (conical, hemispherical and blunt), with a diameter of 6.mm. A wide range of impact velocities from 40 to 100 m/s has been used. Experimental and numerical analysis have been carried out to predict the mechanical behaviour of the studied aluminium alloy. This analysis has been done using a high-pressure gas gun. Specimens were prepared from standard 1.0 mm and 1.5 mm thick aluminum sheets with 13x13 cm plates. The resistance and the energy absorbed by the aluminum sheets under dynamic load were obtained by measuring the initial and residual velocities of the projectiles. The experimental and numerical results are presented and compared in terms of ballistic curve VR-V0, a good correlation was observed.

Numerical Analysis for Determining the Displacements of a Lung Tumor

2015 ◽  
Vol 638 ◽  
pp. 177-182
Author(s):  
Horia Alexandru Petrescu ◽  
Daniel Vlasceanu ◽  
Stefan Dan Pastrama ◽  
Lucian Gheorghe Gruionu
Keyword(s):  
Finite Element ◽  
Numerical Analysis ◽  
Healthcare Professionals ◽  
Lung Tumor ◽  
Three Dimensional ◽  
Geometrical Model ◽  
External Pressure ◽  
Transbronchial Biopsy ◽  
Finite Element Software ◽  
Surgical Operations

In this paper, a numerical analysis is undertaken in order to establish the three dimensional linear displacementsof tumors located inside the lung. In this way, the position of the tumor can be emphasized in various stages of the breathing process, helping thus the healthcare professionals both in surgical operations and in performing transbronchial biopsy. First, a geometrical model of the lung and airways was achieved with a 3D reconstruction program using CT scan images. The model was then imported in the ANSYS finite element software, which was used to perform the numerical simulations. The breathing process was simulated by applying external pressure on the surfaces of the lung. The values of this pressure were chosen as to correspond to the inspiration phase of the breathing process. Finally, conclusions are drawn regarding the values of the displacement of the nodules during breathing.

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