scholarly journals FATIGUE LIFE ANALYSIS OF RIGID PAVEMENT STRUCTURE WITH PERVIOUS CONCRETE BASE LAYER USING 2D FINITE ELEMENT METHOD

2019 ◽  
Vol 17 (63) ◽  
Author(s):  
Frisky Ridwan Aldila Melania Care
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Fatigue Life ◽  
Pervious Concrete ◽  
Base Layer ◽  
Rigid Pavement ◽  
Concrete Base ◽  
Life Analysis ◽  
Pavement Structure ◽  
Fatigue Life Analysis

scholarly journals Fatigue Life Prediction of a Drag Link by Using Finite Element Method

2010 ◽  
Author(s):  
Barıs¸ Koca ◽  
Bu¨lent Ekici
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Fatigue Life ◽  
Frequency Domain ◽  
Time Domain ◽  
Life Analysis ◽  
Fatigue Life Analysis ◽  
The Time Domain ◽  
Drag Link ◽  
Element Method

The focus of this study is to find fatigue behavior and fatigue life of a drag link in the different road and loading conditions. Finite element method was used for fatigue analysis and fatigue life of the drag link was predicted. Firstly, the historical changes in the concept of the fatigue and fatigue life calculation methods were explained in the chapter one and two. Factor affecting the fatigue performance was explained. Stress and strain based fatigue analysis methods were described clearly. Finally, fatigue life analysis in the frequency domain which is a new method relative to the others was explained. Then, two different steering drag links of a midibus were examined and fatigue life calculations of these two drag links were made. The fatigue life analysis in the time domain of the drag links were made in the static steering conditions and the results were compared with the test results made by the vendor of the drag links. After that, the drag link which has a greater fatigue life than the other was selected, the road loads were taken from another test report which was made by using the same drag link and the fatigue life of the drag link was computed by using the finite element method in the time domain. Finally, the same road loads were converted in the frequency domain and the fatigue life analysis of the same drag link were made in the frequency domain. The results from the time domain and the frequency domain were compared and the advantages of the fatigue life analysis in the frequency domain were expressed.

scholarly journals FATIGUE LIFE ANALYSIS OF RAMP DOOR FERRY RO-RO GT 1500 USING FINITE ELEMENT METHOD

2021 ◽  
Vol 15 (1) ◽  
Author(s):  
Alamsyah Alam ◽  
A. B. Mapangandro ◽  
Amalia Ika W ◽  
M U Pawara
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Fatigue Life ◽  
Maximum Stress ◽  
Structural Integrity ◽  
Load Cycle ◽  
Point Load ◽  
Fatigue Life Analysis ◽  
The Given ◽  
Element Method

Ro - Ro Ferry is equipped with a connecting door between the port and the ship. The ramp door experiences load during loading and discharging of the rolling cargo. This repetitive load may cause fatigue failure. The structure of the ramp door should withstand this load. Therefore, The ramp door should be properly designed to ensure the structural integrity of the ramp door. The purpose of this research is to analyze the maximum stress and the Fatigue life of the bow ramp door. The method used is the finite element method. The given loads are several types of vehicles that are commonly transported by the ship. The given load case is the point load working at the girder plate and between the girder plate. Based on the simulation results with the given point load, the maximum stress is identified located between the girder for the large truck case with 397.02 MPa, while the minimum stress located at the girder for sedan car with 43.93 MPa. As for the fatigue life of the bow ramp door construction. it is 1.17 ~ 398.64 years, and the load cycle is 5.35 x 104 ~ 9.05 x 106 cycle. Keywords : Bow Ramp Door; Stress; Fatigue Life; Finite Element; Ferry

Predicting Reliability of Structural Systems Using Classification Method

2013 ◽  
Author(s):  
Recep M. Gorguluarslan ◽  
Seung-Kyum Choi
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Fatigue Life ◽  
Probabilistic Neural Network ◽  
Engineering Problem ◽  
Support Vector ◽  
Structural Systems ◽  
Element Analysis ◽  
Life Analysis ◽  
Fatigue Life Analysis

This research examines classification approaches for estimating the reliability of structural systems. To validate the accuracy and efficiency of the classification methods, a practical engineering problem; namely, a spider assembly of a washing machine, has been considered. For the spider assembly, fatigue life test, finite element analysis, physical experimentation, and a classification processes are conducted in order to establish the analytical certification of its current design. Specifically, the finite element analysis and fatigue life analysis are performed and their results are validated compared to physical experimental results. The classification process is developed to estimate the probability of failure of the spider assembly in terms of stress and fatigue life. The relationship between the random quantities and structural responses of the spider assembly is established using probabilistic neural network and the support vector machine classifiers. The performance margin of the spider assembly is fully identified based on the estimated failure probability and structural analysis results from the fatigue life analysis and classifications.

“STRUCTURE ANALYSIS, CONTACT STRESS ANALYSIS AND FATIGUE LIFE ANALYSIS OF SPUR GEAR ASSEMBLY BY USING FEM”

2018 ◽  
Vol 4 (4) ◽  
pp. 13
Author(s):  
Anand Mohan Singh ◽  
Megha Bhawsar ◽  
Neeraj Kumar Nagayach
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Fatigue Life ◽  
Failure Analysis ◽  
Contact Stress ◽  
Spur Gear ◽  
Contact Analysis ◽  
Element Analysis ◽  
Life Analysis ◽  
Fatigue Life Analysis

In this present work a virtual environment has been created to investigate the failure analysis on spur gear assembly in which structural analysis, fatigue failure analysis and contact stress analysis have been performed using finite element method. For this work, a three dimensional cad model has been created and imported to ANSYS workbench for further finite element analysis. Various boundary conditions have been used to perform structural, fatigue failure assessment and contact analysis such as revolute joints is provided with Body Ground connection for 60 rpm for structure analysis, Augmented Lagrange method is set for contact analysis, for fatigue life analysis the fatigue strength factor is used as 0.85 for fully reverse loading and the life of shear stress in cycles and for the contact analysis linear and nonlinear contact are used for both source and target body. It has been observe that contact stress and bending stress not attain their maximum values at the same points, if the contact stress minimize in primary design stage then the failure of gear can minimized by analysis of the problem during the earlier stage of design. It can also be state that by using finite element analysis complex analysis like fatigue and contact analysis can be performed very accurately within a very short time and cost effectively rather than experimental analysis.

Strength Safety Coefficient and Fatigue Life Analysis of Coupling Diaphragm Based on FE-Simulation

2014 ◽  
Vol 541-542 ◽  
pp. 569-573 ◽  
Author(s):  
Zhong Ke Tian ◽  
Chao Yin ◽  
Fa He Yang
Keyword(s):  
Finite Element ◽  
Fatigue Life ◽  
Fe Simulation ◽  
Equivalent Stress ◽  
Strength Criterion ◽  
Element Model ◽  
Safety Coefficient ◽  
Life Analysis ◽  
Fatigue Life Analysis ◽  
Stress Fatigue

Based on average loading assumption, a non-linear contact finite element model of coupling triple-diaphragm assembly configuration is established. In accordance with the result of diaphragm equivalent stress, the yield strength criterion and high cycle-stress fatigue life norm are adopted to calculate strength safety coefficient and fatigue life of coupling diaphragm. The durability of coupling diaphragm is proved enough numerically.

Fatigue Life Analysis of the Stabilizer Anti-Roll Bar Using ANSYS

2011 ◽  
Vol 383-390 ◽  
pp. 5894-5898 ◽  
Author(s):  
Su Hong Liu ◽  
Fang Li
Keyword(s):  
Mechanical Properties ◽  
Finite Element ◽  
Fatigue Life ◽  
Parametric Model ◽  
Von Mises Stress ◽  
Endurance Test ◽  
Finite Element Technology ◽  
Life Analysis ◽  
Fatigue Life Analysis ◽  
Von Mises

The stabilizer anti-roll bar can prevent the vehicle from rollover, so it is important to get the mechanical properties of it. To achieve it, the finite element technology is chosen and the parametric model was built in the first place. The von Mises stress distribution, reliability and the sensitivity were obtained after being analyzed respectively. Based on these, the fatigue life was estimated finally. The fatigue analysis results were contrasted with the life requirements of stabilizer bar’s endurance test.

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