Investigating Effect of Industrial Coatings on Fatigue Damage

2011 ◽  
Vol 87 ◽  
pp. 230-237 ◽  
Author(s):  
Alireza Arghavan ◽  
Reza Kashyzadeh Kazem ◽  
Alireza Amiri Asfarjani
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Present Article ◽  
Fatigue Damage ◽  
Fatigue Testing ◽  
Experimental Conditions ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Standard Specimens ◽  
Hardened Chromium

Investigating Fatigue is one the most important factors in designing most mechanical structure. The reason is that, in many cases, the specimens of the structure break down without any warning or signal. Nano and micron’s Coatings are finding more and more applications in industry such as aerospace, automotive, and naval industries. The present article has a purpose. Firstly, it intends to explore the influence of four industrial coatings, namely, hardened chromium, embellished chromium, hardened nickel, and warm galvanizing, all of which have the thickness value at micron levels on fatigue specimens. Moreover, it aims to find the most convenient coating. To achieve these purposes, the abovementioned coatings with the thickness of 13 & 19 were coated on standard specimens who were made of CK45 steel under the same conditions. Then, the S-N curve of each sample was attained empirically according to the standard fatigue testing. Specimens are simulated in the finite element analysis according to experimental conditions and then S-N curve of each sample was attained. Finally, comparing the S-N curves, the most appropriate coating is introduced for the delineated conditions and based fatigue results may be predicted damage of coating.

Experimental and Finite Element Analysis Approach for Fatigue of Unidirectional Fibrous Composites

2011 ◽  
Vol 87 ◽  
pp. 106-112 ◽  
Author(s):  
Amiri Asfarjani Alireza ◽  
Adibnazari Sayid ◽  
Reza Kashyzadeh Kazem
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Fatigue Testing ◽  
Micromechanical Model ◽  
Weight Ratio ◽  
Life Time ◽  
Fibrous Composites ◽  
Element Analysis ◽  
Three Point Bending ◽  
The Finite Element Analysis

Fibrous composites are finding more and more applications in aerospace, automotive, and naval industries. They have high stiffness and strength to weight ratio and good rating in regards to life time fatigue. Investigating mechanical behavior under dynamic loads to replace this material is very important. In the present article, investigate Fatigue of Unidirectional Fibrous Composites by using finite element analysis. So, to achieve this purpose Firstly, modeling fiber and matrix in separate case and simulated semi actual conditions, attained S-N curve of fiber and matrix and after that by using micromechanical model of combination fiber and matrix can approach S-N curve of Unidirectional Fibrous Composites. Finally, Comparisons of the finite element analysis of Ansys and the experimental predictions indicate based on three point bending fatigue testing that the results are satisfactorily in good agreement with each other which approves the power law assumption in the model.

Analysis of the Properties of Mechanical Materials and Parts Based on ANSYS Software

2016 ◽  
Vol 723 ◽  
pp. 388-393
Author(s):  
Ze Yang ◽  
Jian Yong Li ◽  
Yan Ping Zhang ◽  
Hai Lian Li ◽  
Xing Hua Gao
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Fatigue Damage ◽  
Fatigue Properties ◽  
Ansys Software ◽  
Element Analysis ◽  
Practical Applications ◽  
Whole Process ◽  
Material Fatigue ◽  
The Finite Element Analysis

In view of the significant role of material science in industrial production, the analysis and research on mechanical properties of materials and parts are of great significance to equipment production and machining. This paper, based on the finite element analysis of ANSYS software, will carry out the exploration and research on characteristics of material fatigue damage within mechanical materials and parts in a degree. Then, the general laws of material fatigue properties will be concluded from theoretical analysis, drawing of curve and equal-life curve as well as some comparisons between materials and parts. Finally, the correctness will be tested with the help of ANSYS software, which is an excellent finite element analysis software with abilities of modeling and simulation. Meanwhile, the whole process can provide somewhat valuable references and citations for practical applications, teachings, researches and academic conferences on material fatigue damage theory.

Fully Coupled Fatigue Damage Analysis of Welded Steel Bridge Member under Traffic Loading

2007 ◽  
Vol 348-349 ◽  
pp. 761-764
Author(s):  
Tai Quan Zhou ◽  
Yuan Hua ◽  
Tommy Hung Tin Chan
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Fatigue Damage ◽  
Damage Evolution ◽  
Damage Mechanics ◽  
Element Analysis ◽  
Coupled Method ◽  
Finite Element Software ◽  
The Finite Element Analysis ◽  
Fully Coupled

The finite element analysis fully coupled fatigue damage evolution is implemented on the user subroutine UMAT of the finite element software ABAQUS. The fully coupled method developed with damage mechanics and the finite element analysis is performed on calculation of fatigue damage accumulation of the critical welded member in the Tsing Ma Bridge. The calculated result shows that the fatigue damage in the critical welded member is accumulated in the region of toe of welding. The value of faitgue life calculated by the fully coupled method is smaller than that by the uncoupled method, which suggests that there exists interaction between the fatigue damage evolution and the structural response. The linear Miner’s Law is widely used however conservative for the evaluation of fatigue life of bridge on service. The above results provide feasible method for accurate evaluation of fatigue damage in bridge components based on the hot spot stress analysis and the damage mechanics theory.

Research on Fatigue Behavior of Beam with Corrugated Steel Webs

2013 ◽  
Vol 690-693 ◽  
pp. 164-167
Author(s):  
Xiao Long Hu ◽  
Lian Fei Tan ◽  
Qing Xuan Wang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Fatigue Testing ◽  
Fatigue Behavior ◽  
Testing Machine ◽  
Element Analysis ◽  
Three Point Bending ◽  
Corrugated Webs ◽  
The Finite Element Analysis ◽  
Corrugated Steel Web

This paper present that experimental research on the fatigue behavior of beam with Q345c steel corrugated webs. There are four test specimens with different structural feature will be tested in three-point bending to load by Shinmadzu 4890 fatigue testing machine. Moreover, the finite-element analysis will be used to simulate the fatigue behavior of common beam with corrugated steel web. Weld will be our focus on importance object.

scholarly journals Real and Simulated Mechanical Tests

2015 ◽  
Vol 13 ◽  
pp. 160-167
Author(s):  
Mihai Gabriel Matache ◽  
Petru Cardei ◽  
Gheorghe Voicu ◽  
Valentin Vladut ◽  
Raluca Sfaru ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Fatigue Testing ◽  
Mechanical Test ◽  
Mechanical Tests ◽  
Test Methods ◽  
Element Analysis ◽  
Physical Test ◽  
The Finite Element Analysis ◽  
Physical Tests

This paper presents the results obtained by the authors when applying mechanical test methods that are validated using fatigue testing under simulated regime with finite element analysis. In addition to the mostly mandatory physical tests, the simulated regime testing can validate emerging conclusions. Virtual testing conclusions (computer simulated via Cosmos finite element analysis software), strengthen, complement and increase the accuracy of physical test conclusions. During the investigation of the physical test results, there are cases where the simulated physical test is not always explainable. This paper presents a case study conducted on special constructed screws that are subjected to fatigue and verified using the finite element analysis. It presents the possibility for practical application of simulated tests in order to redesign structures that fail during physical tests.

scholarly journals Fatigue Crack Monitoring of T-Type Joints in Steel Offshore Oil and Gas Jacket Platform

Sensors ◽  
2021 ◽  
Vol 21 (9) ◽  
pp. 3294
Author(s):  
Liaqat Ali ◽  
Sikandar Khan ◽  
Salem Bashmal ◽  
Naveed Iqbal ◽  
Weishun Dai ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Fatigue Damage ◽  
Fatigue Cracks ◽  
Tube Plate ◽  
Element Analysis ◽  
Damage Location ◽  
The Finite Element Analysis ◽  
Weld Toe ◽  
Type Tube

Several approaches have been used in the past to predict fatigue crack growth rates in T-joints of the offshore structures, but there are relatively few cases of applying structural health monitoring during the non-destructive testing of jacket platforms. This paper presents an experimental method based on the sensing of the piezoelectric sensors and finite element analysis method for studying the fatigue cracks in the offshore steel jacket structure. Three types of joints are selected in the current research work: T-type plate, T-type tube-plate, and T-type tube joints. The finite element analysis model established in the current study computes and analyzes the high stress and high strain regions in the T-type joints. The fatigue damage in the T-type joints was successfully detected by utilizing both the finite element analysis and experimental methods. The results showed that fatigue cracks of the three types of joints are prone to appear at the weld toe and spread in the welding direction. The fatigue damage location of T-type plate and T-type tube-plate joints is more concentrated in the upper weld toe area, and the fatigue damage location of the T-type tube joint is closer to the lower weld toe area.

Finite Element Analysis about Push Plates of Dismounting Coupler and Buffer from Passenger Train Base on ANSYS

2014 ◽  
Vol 709 ◽  
pp. 25-27
Author(s):  
Xue Bing Li
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Fatigue Damage ◽  
Element Analysis ◽  
Heavy Load ◽  
Passenger Train ◽  
The Finite Element Analysis

The important parts of passenger train—push plates, which force directly coupler and buffer device, and bear heavy load, easily have fatigue damage. The finite element analysis for them is to improve the design , for analyzing structure and checking intensity, so it has a guiding significance.

Interactive Graphics for the Analysis of Tires

1985 ◽  
Vol 13 (3) ◽  
pp. 127-146 ◽  
Author(s):  
R. Prabhakaran
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Approximate Solutions ◽  
Interactive Graphics ◽  
Element Analysis ◽  
Analysis Process ◽  
Physical Problems ◽  
The Finite Element Analysis ◽  
Analysis Computer ◽  
Discretization Technique

Abstract The finite element method, which is a numerical discretization technique for obtaining approximate solutions to complex physical problems, is accepted in many industries as the primary tool for structural analysis. Computer graphics is an essential ingredient of the finite element analysis process. The use of interactive graphics techniques for analysis of tires is discussed in this presentation. The features and capabilities of the program used for pre- and post-processing for finite element analysis at GenCorp are included.

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