Chloride diffusion study in different types of concrete using finite element method (FEM)

2014 ◽  
Vol 2 (1) ◽  
pp. 39-56 ◽  
Author(s):  
Sajal K. Paul ◽  
Subrata Chaudhuri ◽  
Sudhirkumar V. Barai
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Chloride Diffusion ◽  
Diffusion Study ◽  
Different Types ◽  
Element Method

scholarly journals Aspects of the analysis of frame-panel interaction

1971 ◽  
Vol 4 (1) ◽  
pp. 126-144
Author(s):  
P. J. Moss ◽  
A. J. Carr
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Material Nonlinearity ◽  
The Finite Element Method ◽  
Computer Methods ◽  
Different Types ◽  
Failure Properties ◽  
Element Method

Some of the aspects involved in modelling frame-panel interaction by computer methods are discussed. These include the different types of infill and their strength and failure properties, the forces of interaction, and methods for handling material nonlinearity.
 The use of the finite element method to implement the analysis is described and examples are presented to illustrate the application of the method.

Element Selection and Meshing in Finite Element Contact Analysis

2010 ◽  
Vol 152-153 ◽  
pp. 279-283
Author(s):  
Run Bo Bai ◽  
Fu Sheng Liu ◽  
Zong Mei Xu
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Contact Problem ◽  
Nonlinear Problem ◽  
Mechanical Engineering ◽  
Contact Analysis ◽  
The Finite Element Method ◽  
Different Types ◽  
Set Up ◽  
Element Method

Contact problem, which exists widely in mechanical engineering, civil engineering, manufacturing engineering, etc., is an extremely complicated nonlinear problem. It is usually solved by the finite element method. Unlike with the traditional finite element method, it is necessary to set up contact elements for the contact analysis. In the different types of contact elements, the Goodman joint elements, which cover the surface of contacted bodies with zero thickness, are widely used. However, there are some debates on the characteristics of the attached elements of the Goodman joint elements. For that this paper studies the type, matching, and meshing of the attached elements. The results from this paper would be helpful for the finite element contact analysis.

scholarly journals Finite Element Analysis Research on Buckling Behaviour of Unrestrained Stiffened Cold Formed Steel Box Sections

2020 ◽  
Vol 9 (2) ◽  
pp. 1033-1043
Keyword(s):  
Finite Element Method ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Ultimate Strength ◽  
Element Analysis ◽  
Face To Face ◽  
Different Types ◽  
Cold Formed Steel ◽  
Element Method

This research mainly concentrates on ultimate strength and buckling behaviour of cold formed steel (CFS) laterally un-braced longitudinally stiffened box sections under flexure. A total of five various stiffener combinations for box sections has been studied by modifying the shape of a simple end stiffened section by the provision of intermediate stiffeners along web, flange or both along web and flange. The influence of different types of stiffeners with respect to various aspect radio’s (H/T, B/T, C/T and H/B) have been studied using Finite Element Method (FEM), and recommendations have been proposed on provisions of different stiffener’s combinations. This study mainly details with ultimate strength and buckling behaviour of CFS laterally unbraced stiffened box sections made by C sections connected face to face.

Stent vs Stent Study by Means of Finite Element Method

2014 ◽  
Author(s):  
Misagh Imani ◽  
A. M. Goudarzi ◽  
D. D. Ganji ◽  
M. Barzegar Gerdroodbary
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Randomized Trials ◽  
Interventional Procedure ◽  
Clinical Results ◽  
Regulatory Agencies ◽  
Stent Design ◽  
Different Types ◽  
Good Agreement ◽  
Element Method

It is well known that the stent design plays an important role in the outcome of the stenting interventional procedure. Thus, analyzing and comparing the behavior of different types of stent is essential to select the most appropriate stent design to use. Furthermore, assessing the behavior of stent is one of the components of the process in which new biomedical stent devices are designed and approved. Indeed, new stent designs have to be proved to be equivalent to an approved stent to be confirmed from the regulatory agencies. This sets the stage for a series of “stent versus stent” randomized trials designed to show that each newer stent design was not inferior to the prior approved stent. In this paper, finite element method is used to assess the behavior of stents. The objective of this work is to present a numerical alternative for “stent versus stent” complicated clinical studies. Three commercially available stents (the Palmaz–Schatz, Multi–Link and NIR stents) are modeled and their behaviors are compared. According to the findings, the possibility of restenosis is lower for Multi–Link and NIR stents in comparison with Palmaz–Schatz stent which is in good agreement with clinical results.

Finite Element Analysis of The Thermal Behaviour of Different Types of Connecting Rod for Various Materials

2021 ◽  
Vol 13 (4) ◽  
Author(s):  
D. Sheiksha Vali ◽  
T. Micha Premkumar ◽  
A. Anand Sai ◽  
P.V. Sudarshan ◽  
P. Roopak ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Thermal Analysis ◽  
Heat Flux ◽  
Finite Element ◽  
Temperature Distribution ◽  
High Performance ◽  
Connecting Rod ◽  
Element Analysis ◽  
Different Types ◽  
Element Method

Thermal analysis of different types of the connecting rods are under stead state condition using finite element method. The energy equation and heat transfer equation in the solids are completely addressed and solved using the Newton-Raphson technique and finite element method. SOLID WORKS is used for modelling different types of connecting rods and ANSYS© software is used to perform this numerical investigation. Three different materials like structural steel, aluminium alloy and titanium are selected as the material of connecting rod to do the comparative studies. In a steady thermal analysis, properties like temperature distribution, total heat flux and directional heat flux are calculated. The knowledge of the above properties is required to identify the viscosity of oil used for lubrication and also temperature distribution is helpful to find the thermal deformation in the connecting rod. Temperature and convection co-efficient are the boundary conditions. 22°C is the initial temperature value and the value of convection co-efficient is 350W/m2°C. As a result of thermal analysis, titanium alloy is the best material among the three materials as it with stand higher temperatures, high lifecycle and high performance.

scholarly journals 3D FINITE ELEMENT MODELING OF SLING WIRE ROPE IN LIFTING AND TRANSPORT PROCESSES

Transport ◽  
2013 ◽  
Vol 30 (2) ◽  
pp. 129-134 ◽  
Author(s):  
Gordana Kastratović ◽  
Nenad Vidanović
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Axial Loading ◽  
Wire Rope ◽  
Transport Processes ◽  
Wire Ropes ◽  
Steel Core ◽  
Modeling Techniques ◽  
Different Types ◽  
Element Method

Paper explores some aspects of 3D modeling of ‘aircraft cable’ as mostly used sling wire rope. First, the 1×19 stainless steel core of ‘aircraft cable’ was investigated. The analysis was carried out by finite element method based computer program. The software used allowed two different types of contacts, including friction. The sling wire rope core was subjected to two different types of axial loading. The obtained results were compared with the solutions calculated from the literature (Costello 2012). Finally, using the advanced modeling techniques, the parametric 3D model of 7×19 ‘aircraft cable’ was analyzed using finite element method, in order to provide a better understanding and, hence, prediction, of the mechanical behavior of the sling wire ropes in lifting processes.

Stochastic Finite Element Based Reliability Analysis of Concrete Structures in Marine Environment

2012 ◽  
Vol 193-194 ◽  
pp. 831-838
Author(s):  
Bin Hong ◽  
Lu Feng Yang ◽  
Zheng Chen ◽  
Qing Ming Jiang ◽  
Chun Yan Hu ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Marine Environment ◽  
Concrete Structures ◽  
Chloride Diffusion ◽  
Chloride Diffusion Coefficient ◽  
Stochastic Finite Element Method ◽  
Stochastic Finite Element ◽  
Average Theory ◽  
Element Method

The stochastic model of chloride diffusion is the foundation of evaluating concrete structures’ reliability in marine environment. In this paper, the random field of chloride diffusion coefficient was described as a group of random variables by local average theory. The chloride distribution matrix, diffusion matrix and nodal concentration vector were expanded by using the Taylor series. The stochastic finite element method was developed, and the mean and standard deviation of the chloride distribution concentration were yielded by the presented method. A numerical example demonstrated the high precision of the stochastic finite element method presented, and the service life of concrete structures could be predicted by the method.

Distribution of Chloride Concentration in Modeled Recycled Concrete Simulated by Finite Element Method

2011 ◽  
Vol 261-263 ◽  
pp. 147-150
Author(s):  
Jing Wei Ying ◽  
He Gong Chen
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Diffusion Process ◽  
Homogeneous Medium ◽  
Chloride Concentration ◽  
Smooth Curve ◽  
Recycled Concrete ◽  
Recycled Aggregates ◽  
Chloride Diffusion ◽  
Element Method

Proposed is a simple analytic model that can simulate the chloride diffusion distribution in a modeled recycled aggregates concrete (RAC). In this paper, on the one hand, the RAC is divided into three phases such as normal aggregates, new mortar and old attached mortar; on the other hand, a single aggregates RAC model was built, finite element method (FEM) is used to simulate chloride diffusion process based on the parameters of diffusivities summarized or derived from other literatures. It is found that the chloride concentration distribution in the RAC shows a band-like profile instead of a smooth curve for a homogeneous medium by ten years diffusion, with the bandwidth undulating and narrowing as the diffusion depth increases. The concentration of chloride distribution can be indicated by the different colors and, therefore, the proposed model allows more accurate realization of diffusion process.

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