Fatigue fracture analysis of the semi-auto shotgun mechanism by using finite element analysis and experimental setup

Objectives: In this study, dental implants with three different tooth pitch are designed and tested under static loads and fatigue analysis. In order to reveal the strengths of the different implant designs in dental implant application, the experimental setup where real physical environments were created experimental data was obtained, and these data were compared with numerical data. Materials and Methods: It is difficult to find an analytical solution for problems involving complex geometries. For this reason, numerical methods such as finite element analysis (FEA) are used. For compared finite element results and experimental analysis a new experimental setup has been created to simulate the physical conditions inside the mouth. In this arrangement, the temperature is close to ideal with the acidic environment inside the mouth. Firstly, the geometrical implant system determined on the CNC machine was produced. Results and Conclusion: In this study, dental implant research with 3 different screw pitch was performed. The results obtained from the experimental results were compared with the results obtained from the numerical analysis and it was observed that the accuracy of the numerical analysis was approximately 95%. It was observed that the tensions were less in the dental implant with higher number of screw pitch. In terms of the difficulty of experimental studies, finite element analysis saved both time and money. Thanks to this method, different scenarios can be applied to the optimum design of the dental implant and it can be designed in a computer environment before applying to the patient.

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Investigation of Pipe Strain Measurements in a Curved Wide Plate Specimen

2010 8th International Pipeline Conference, Volume 4 ◽

10.1115/ipc2010-31292 ◽

2010 ◽

Cited By ~ 2

Author(s):

Stijn Hertele´ ◽

Wim De Waele ◽

Rudi Denys ◽

Jeroen Van Wittenberghe ◽

Matthias Verstraete

Keyword(s):

Finite Element Analysis ◽

Finite Element ◽

Strain Measurement ◽

Entire Range ◽

Experimental Setup ◽

Element Analysis ◽

Widespread Application ◽

Strain Measurements ◽

Plate Specimen ◽

Girth Welds

Throughout the last two decades, curved wide plate (CWP) tests have proven to be highly valuable to evaluate the strain capacity of defected girth welds. Despite its widespread application, the CWP test is not yet standardized. In particular, the effects of specimen geometry and deformation measurement setup on the measurement of pipe (remote) strain have not yet been thoroughly documented. Recently, Laboratory Soete published its ‘UGent’ guidelines for CWP testing, in which advice is given on the entire experimental setup. This paper elaborates a finite element analysis of the effect of the CWP specimen’s geometry on the strain measurement. It is found that, following the UGent guidelines and under the assumptions of the study, the geometry has a limited influence for the entire range of investigated materials and pipe dimensions. This indicates that meeting the UGent guidelines for CWP testing yields representative pipe strain measurements.

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Study on Failure Analysis of Crankshaft Using Finite Element Analysis

MATEC Web of Conferences ◽

10.1051/matecconf/202133503001 ◽

2021 ◽

Vol 335 ◽

pp. 03001

Author(s):

Yoon Zuan Ang ◽

Pei Xuan Ku

Keyword(s):

Finite Element Analysis ◽

Finite Element ◽

Fatigue Life ◽

Dynamic Analysis ◽

Fatigue Fracture ◽

Combustion Engine ◽

Equivalent Stress ◽

Element Analysis ◽

Maximum Equivalent Stress ◽

Dynamic Loading Conditions

Crankshaft is one of the crucial parts for the internal combustion engine which required effective and precise working. In this study, the aim of the study is to identify the stress state in the crankshaft and to explain the failure in automotive crankshaft and fatigue life of crankshaft by using finite element analysis. The 3D solid modelling of the crankshaft model was designed and developed using SolidWorks. A static structural and dynamic analysis on an L-twin cylinder crankshaft were used to determine the maximum equivalent stress and total deformation at critical locations of the crankshaft. The model was tested under dynamic loading conditions to determine fatigue life, safety factor, equivalent alternating stress and damage using the fatigue tool. The results obtained from this study indicated that the crankshaft has obvious fatigue crack which was belongs to fatigue fracture. The fatigue fracture developed was only attributed to the propagating and initiate cracks on the edges of the lubrication hole under cyclic bending and torsion. Overall, the crankshaft is safe for both static and fatigue loadings. In dynamic analysis, the critical frequency obtained in the frequency response curve should be avoided which it may cause failure of the crankshaft.

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Hygrothermal Fracture Analysis of Orthotropic Functionally Graded Materials UsingJk-Integral-Based Methods

Mathematical Problems in Engineering ◽

10.1155/2013/315176 ◽

2013 ◽

Vol 2013 ◽

pp. 1-11 ◽

Cited By ~ 2

Author(s):

Serra Topal ◽

Serkan Dag

Keyword(s):

Finite Element Analysis ◽

Finite Element ◽

Functionally Graded Materials ◽

Fracture Analysis ◽

Functionally Graded ◽

Mixed Mode Fracture ◽

Inclined Crack ◽

Element Analysis ◽

Moisture Concentration ◽

Graded Materials

This paper puts forward two differentJk-integral-based methods, which can be used to perform mixed-mode fracture analysis of orthotropic functionally graded materials subjected to hygrothermal stresses. The first method requires the evaluation of both components ofJk-integral, whereas the second method employs the first componentJ1and the asymptotic crack tip displacement fields. Plane orthotropic hygrothermoelasticity is the basic theory behind theJk-integral formulation, which is carried out by assuming that all material properties are functions of the spatial coordinates. Developed procedures are implemented by means of the finite element method and integrated into a general purpose finite element analysis software. Temperature and specific moisture concentration fields needed in the fracture analyses are also computed through finite element analysis. Each of the developed methods is utilized in conjunction with the superposition technique to calculate the hygrothermal fracture parameters. An inclined crack located in a hygrothermally loaded orthotropic functionally graded layer is examined in parametric analyses. Comparisons of the results generated by the proposed methods do indicate that both methods lead to numerical results of high accuracy and that the developed form of theJk-integral is domain independent. Further results are presented so as to illustrate the influences of crack inclination angle, crack length, and crack location upon the modes I and II stress intensity factors.

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Investigation of Circular Flexural Hinge Used in Compliant Mechanism Using FEA Tool.

International Journal of Engineering Technology and Sciences ◽

10.15282/ijets.5.2016.1.5.1044 ◽

2016 ◽

Vol 3 (1) ◽

pp. 34-42

Author(s):

M. M. Sawant ◽

P. R. Anerao

Keyword(s):

Finite Element Analysis ◽

Finite Element ◽

Fatigue Life ◽

Compliant Mechanisms ◽

Compliant Mechanism ◽

Flexure Hinge ◽

Experimental Setup ◽

Element Analysis ◽

Flexural Hinges ◽

Improve Fatigue

To reduce fatigue failure of compliant mechanism, it is necessary to design and analyze the flexure hinge parametrically. A methodology to design a flexural hinges for compliant mechanism is proposed in this paper to improve fatigue life. Results obtained by finite element analysis shows that used design equations are reliable and easier to be used in the design of such proportion flexural hinges. The proposed analytical model gives a new viewpoint on the design of circular flexure hinge based compliant mechanisms. Circular flexural joint was manufactured by using Al 6061 T6 material and experimental setup is developed to test this flexural hinge. Results obtained by FEA were found to be in good correlation with experimental results. The variation in the results can be attributed to variation in properties of material, actual dimensions of setup etc.

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PS09 Finite Element Analysis of Fatigue Fracture Mechanism of Wire Rope

The Proceedings of the Materials and Mechanics Conference ◽

10.1299/jsmemm.2013._ps09-1_ ◽

2013 ◽

Vol 2013 (0) ◽

pp. _PS09-1_-_PS09-3_

Author(s):

Takenori TERADA ◽

Satoshi IZUMI ◽

Kenta YAMAGIWA ◽

Shinsuke SAKAI

Keyword(s):

Finite Element Analysis ◽

Finite Element ◽

Fatigue Fracture ◽

Fracture Mechanism ◽

Wire Rope ◽

Element Analysis ◽

Fatigue Fracture Mechanism

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Finite Element Analysis of Multi-Position Fatigue Fracture Damage of Nuclear Pipeline Based on X-ray Scattering

Nanoscience and Nanotechnology Letters ◽

10.1166/nnl.2020.3091 ◽

2020 ◽

Vol 12 (2) ◽

pp. 132-140

Author(s):

Jinfang Zhao ◽

Qun Zhao

Keyword(s):

Finite Element Analysis ◽

Finite Element ◽

Fatigue Fracture ◽

Damage Index ◽

Analysis Method ◽

Element Analysis ◽

X Ray ◽

Finite Element Analysis Method ◽

X Ray Scattering ◽

Ray Scattering

The traditional finite element analysis method has poor performance in identification, and there are errors in the selected identification position, resulting in the fact that the accuracy of the results of the finite element analysis is not high. Therefore, based on the characteristics of X-ray scattering, a new finite element analysis method for multi-position fatigue fracture of damage nuclear pipeline is proposed. In this method, a nuclear pipe model is constructed and the three-dimensional scattering identification density of X-ray is established. Based on the creep curve, the material parameters of the nuclear pipeline are analyzed, and the damage index grade is divided according to the yield strength and other parameters; the equivalent stress is calculated, and the constitutive relationship between the material and the damage index is described according to the damage value. The classical scattering formula and Stokes formula are introduced to locate the position of the X-ray cut in node by setting the spatial and temporal distribution function. The parameters of random dynamic change are calculated, and the anchor nodes and position nodes are set to locate the scanning range of damage nuclear pipeline. Experimental results show that compared with the traditional three methods, the proposed method has higher recognition rate and more accurate finite element analysis results. It can be seen that the performance of this method is superior.

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