Fatigue Test and Stress Analysis of Threaded Connection of Arch Bridge Stainless Steel Suspender

2010 ◽  
Vol 452-453 ◽  
pp. 541-544 ◽  
Author(s):  
Yu Pu Song ◽  
Han Yong Liu
Keyword(s):  
Finite Element ◽  
Stainless Steel ◽  
Stress Analysis ◽  
Fatigue Test ◽  
Von Mises Stress ◽  
External Loading ◽  
Arch Bridge ◽  
Finite Element Software ◽  
Threaded Connection ◽  
Von Mises

This work presents a study of a fatigue test and a finite element analysis on an arch bridge stainless steel suspender with threaded connections. A suspender which had a diameter of 70mm was tested under axial tensile loads range from 430kN to 700kN. The suspender was sudden failure from the thread root of the first loaded tooth in the pin after 1546609 cycles. Then, a two-dimensional axisymmetric modeling ignoring the helix angle of the thread was established with finite element software ANSYS to perform a stress analysis of the threaded connection. The stress concentration factors (SCFs) at the root of the teeth of pin were investigated under the applied external loading. The conclusive results had been drawn from the analysis including the location and the value of maximum SCF in the pin. Finally, the location and the value of the maximum von Mises stress were given. The results showed that the location of the fracture surface was consistent with the location of the maximum von Mises stress.

Based on the Finite Element Software ANSYS/LS-DYNA Metal Plate Covering Parts Forming Process Simulation and Optimization Research

2014 ◽  
Vol 912-914 ◽  
pp. 589-592
Author(s):  
Jin Ling Wang
Keyword(s):  
Finite Element ◽  
Sheet Metal ◽  
Metal Plate ◽  
Von Mises Stress ◽  
Skilled Workers ◽  
Forming Process ◽  
Simulation And Optimization ◽  
Finite Element Software ◽  
Stamping Process ◽  
Von Mises

The design of cold punching mould CAD/CAM and the combination of CAE analysis can advance analysis of stamping process program, eventually get ideal stamping parameters, realize design automation, save resources and reduce dependence on experience, reduce the demand for skilled workers. This paper, by using nonlinear dynamic finite element software ANSYS/ls-dyna continuous function, simulation of sheet metal forming process and unloading plate deformation, forming process, at any time throughout the von mises stress nephogram should rebound and strain values and unloading plate material as a result, analysis help us better understand the changes of the internal material sheet metal stamping process.

Analysis of the Multi-Tooth Meshing Effect of Three-Ring Gear Reducer

2012 ◽  
Vol 214 ◽  
pp. 87-91
Author(s):  
Yuan Li ◽  
Chen Zhu
Keyword(s):  
Finite Element ◽  
Load Distribution ◽  
Von Mises Stress ◽  
Distribution Characteristics ◽  
Ring Gear ◽  
Tooth Contact ◽  
Finite Element Software ◽  
Epicyclic Gear ◽  
Tooth Number ◽  
Von Mises

Three-ring reducer is a type of epicyclic gear drive with small tooth number difference and internal gear. It is different from other gear transmission, that the load shearing factor of multi tooth contact is much smaller. On the basis of analyses of geometry, tooth deformation and manufacturing errors, a mathematical model which describes the state of multi tooth contact and the load distribution characteristics of tooth was developed. The multi- tooth meshing effect of the three- ring gear reducer is studied used the finite element method and ANSYS finite element software. While three- ring gear reducer is running, the number of teeth contacted simultaneously, their load distribution characteristics and the von Mises stress change are gained.

scholarly journals Effects of Attraction of Vacuum Extractors of Different Materials and Pressures on the Fetal Head During Delivery

2021 ◽  
Author(s):  
Yu-Hsuan Chen ◽  
Kuo-Min Su ◽  
Ming-Tzu Tsai ◽  
Chi-Kung Lin ◽  
Cheng-Chang Chang ◽  
...  
Keyword(s):  
Finite Element ◽  
Stainless Steel ◽  
Von Mises Stress ◽  
Reactive Force ◽  
Fetal Head ◽  
Element Analysis ◽  
Vacuum Extractor ◽  
The Finite Element Analysis ◽  
Von Mises ◽  
Analysis Models

Abstract PurposeIn some cases where operative deliveries are required with vacuum extractor, and obstetricians could choose the vacuum extractor to facilitate the process smoother and safer. However, there is no related biomechanical literature about the influences of vacuum extractors fabricated from different materials and pressures of vacuum on the fetal head. Hence, we utilized the finite element method to investigate the influences of vacuum extractors manufactured from different materials on the fetal head under various extractive pressures.MethodsFirst, the finite element analysis models of vacuum extractor and fetal head were established. The vacuum extractor model was designed as a hemispherical shape and we compared silicone rubber and stainless steel for the materials of vacuum extractor. Subsequently, four different vacuum pressures were applied as the factors for investigation—500-cm H2O, 600-cm H2O, 700-cm H2O, and 800-cm H2O. Finally, we observed and analyzed the reactive force on the fetal head, von Mises stress of vacuum extractor, and von Mises stress on the skull of fetal head to evaluate the influences of vacuum extractors of different materials under different pressures. ResultsThe results demonstrated that different vacuum pressures had only a slight difference of influences on the fetal head. The use of stainless-steel vacuum extractors caused a relatively larger reactive force (358.04–361.37 N) and stress (13.547–13.675 MPa) on the fetal head. ConclusionsNon-metallic or relatively softer materials could be selected when using a vacuum extractor for operative delivery to avoid complications such as scalp scratch, and even cephalohematoma and intracerebral hemorrhage.

scholarly journals THREE-DIMENSIONAL FINITE ELEMENT ANALYSIS OF CLASS 2 INLAY ON MANDIBULAR MOLAR USING VARIOUS MATERIALS

2018 ◽  
Vol 6 (7) ◽  
pp. 272-277
Author(s):  
Maj Pankaj Awasthi ◽  
Lt Col Sonali Sharma ◽  
Maj Summerdeep Kaur
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Stress Distribution ◽  
Stress Analysis ◽  
Von Mises Stress ◽  
Element Analysis ◽  
Tooth Structure ◽  
Mandibular Molar ◽  
Von Mises ◽  
Mandibular First Molar

Aim: To study the stress distribution in Class 2 Inlay of various materials on Mandibular Molar. Background: Inlays are fabricated using different materials like gold, porcelain or a cast metal alloy. Difference in the modulus of elasticity of the material and tooth structure would lead to generation of stresses leading to failure of the restoration or loss of tooth structure. Finite Element Analysis (FEA) is a mathematical tool for stress analysis in a structure. Von Mises stress being the combination of normal and shear stresses which occur in all directions. This stress has to be given diligent importance while considering the type and material of restoration to achieve long-term success. Methodology: In our study, stress analysis was performed on the mandibular first molar using a stress analysis software (ANSYS). A computer model of mandibular first molar was generated along with generation of an inlay volume using a FEA software preprocessor. The models with the class 2 inlays of different materials were subjected to 350N and 800N load simulating normal masticatory force and bruxism respectively. Maximum and minimum stresses were calculated for each model separately. Results: Von Mises stress distribution for different materials for normal masticatory forces and bruxism were studied and evaluated. Conclusion: The study revealed the maximum and minimum stresses imposed over the tooth and the restoration and provides insight into the areas which are more prone to fracture under the occlusal load.

Analysis of the Multi-Tooth Meshing Effect of Three-Ring Gear Reducer

2012 ◽  
Vol 155-156 ◽  
pp. 531-534
Author(s):  
Yuan Li ◽  
Chen Zhu
Keyword(s):  
Finite Element ◽  
Load Distribution ◽  
Von Mises Stress ◽  
Distribution Characteristics ◽  
Ring Gear ◽  
Tooth Contact ◽  
Finite Element Software ◽  
Epicyclic Gear ◽  
Tooth Number ◽  
Von Mises

Three-ring reducer is a type of epicyclic gear drive with small tooth number difference and internal gear. It is different from other gear transmission, that the load shearing factor of multi tooth contact is much smaller. On the basis of analyses of geometry, tooth deformation and manufacturing errors, a mathematical model which describes the state of multi tooth contact and the load distribution characteristics of tooth was developed. The multi- tooth meshing effect of the three- ring gear reducer is studied used the finite element method and ANSYS finite element software. While three- ring gear reducer is running, the number of teeth contacted simultaneously, their load distribution characteristics and the von Mises stress change are gained.

Modal Stress Analysis of a Cracked Woven Composite Beam under Compression

2018 ◽  
Vol 917 ◽  
pp. 316-320
Author(s):  
Mehmet Yetmez
Keyword(s):  
Finite Element ◽  
Stress Analysis ◽  
Elastic Strain Energy ◽  
General Purpose ◽  
Von Mises Stress ◽  
Graphical Form ◽  
Beam Dynamic ◽  
Plain Weave ◽  
Von Mises ◽  
Modal Stress

In this study, modal stress analysis of carbon fiber plain weave cracked composite beams under compression is considered. General-purpose finite element code MSC. Marc is used for the finite element beam models. Before understanding the compression effect on the beam, dynamic characteristics of the models are compared with the experimental evaluations. Investigation of quasi-static and dynamic (equivalent von Mises stress and elastic strain energy density) behavior of the plain weave cracked beams with two different thicknesses under compression is examined numerically. Results are given in tabular and graphical form.

scholarly journals ANALISIS TEGANGAN INSERT CAVITY MOLDING RAK SEPATU TERHADAP TEKANAN 160 MPA PADA MESIN INJECTION PLASTIK MENGGUNAKAN SOFTWARE AUTODESK INVENTOR PROFESSIONAL 2017

2020 ◽  
Vol 2 (2) ◽  
pp. 1
Author(s):  
Mohammad Ihya’ Ulumuddin
Keyword(s):  
Stainless Steel ◽  
Stress Analysis ◽  
Safety Factor ◽  
Von Mises Stress ◽  
Stress Strain ◽  
Von Mises

Plastik merupakan salah satu bahan baku untuk membuat suatu product plastik yang berguna untuk memenuhi kebutuhan manusia, Selama  pengamatan di PT X terutama dalam proses pembuatan desain molding, di tempat tersebut tidak melakukan analisis desain menggunakan software, oleh sebab itu penulis membuat analisis molding menggunakan software, penelitian ini bertujuan menganalisis kekuatan plate insert cavity pada saat mendapatkan tekanan 160 MPa dari mesin injection untuk mengetahui tegangannya perlu dilakukan analisis memakai software autodesk inventor profesioanl 2017 Pada analisis ini dilakukan studi langsung di PT X Proses analisis diawali dengan membuat desain 3D molding kemudian masuk ke menu stress analysis pada kotak dialog pressure dimasukan data tekanan yang sebesar 160 Mpa, untuk bahan molding yang digunakan untuk analisis adalah stainless steel, setelah data masuk semua bisa langsung dijalankan simulation tegangannya, dari analisis akan diperoleh data tegangan seperti von misess, stress, strain, displacment, .dan safety factor Berdasarkan hasil analisis statis didapat kekuatan molding yaitu nilai von mises stress maksimum adalah 124,2  Mpa, nilai Stress maksimum adalah 118,1 Mpa, nilai displacement maksimum adalah 0,06579 mm, , nilai strain maksimum adalah 6,03 x 10-4, dengan nilai faktor keamanan 2,01 maka faktor kemanan beban pada molding masih aman mengunakan bahan stainless steel.

scholarly journals Stress Analysis on Tubesheet Referring to TEMA Standard

2021 ◽  
Vol 5 (1) ◽  
pp. 52-57
Author(s):  
Krisdiyanto Krisdiyanto ◽  
Muhamad Naufal Fikri ◽  
Rahmad Kuncoro Adi ◽  
Ahmad Restian Adi Nugroho
Keyword(s):  
Mass Transfer ◽  
Finite Element ◽  
Heat Exchanger ◽  
Yield Strength ◽  
Stress Analysis ◽  
Von Mises Stress ◽  
Tube Sheet ◽  
Manufacturer Association ◽  
Von Mises ◽  
Research Show

A heat exchanger is a device used to transfer heat without mass transfer. The equipment must be designed according to established standards. The standard that is widely used is the standardissued by TEMA (Tubular Exchanger Manufacturer Association). The results of the design of theheat exchanger with these standards are considered less efficient in terms of the material. Theefficiency of the material used can be analyzed by stress analysis on the components that withstand the force, and one of these components is the tube sheet. Stress analysis on tube sheets can use finite element-based software. The results of the research show that the tube sheet design that refers to the TEMA standard is relatively safe because the maximum von Mises stress is below the yield strength of the material used, while the overdesign value is rather significant because the average von Mises stress is also far below the yield strength of the material used.

scholarly journals Investigating the Vacuum Extractors of Biomedical Devices of Different Materials and Pressures on the Fetal Head during Delivery

2021 ◽  
Vol 11 (17) ◽  
pp. 8237
Author(s):  
Yu-Hsuan Chen ◽  
Kuo-Min Su ◽  
Ming-Tzu Tsai ◽  
Chi-Kang Lin ◽  
Cheng-Chang Chang ◽  
...  
Keyword(s):  
Finite Element ◽  
Stainless Steel ◽  
Intracerebral Hemorrhage ◽  
Reaction Force ◽  
Von Mises Stress ◽  
Operative Delivery ◽  
Fetal Head ◽  
Vacuum Extractor ◽  
Von Mises ◽  
Reliable Basis

Operative delivery requires the use of a vacuum extractor; obstetricians can choose the appropriate vacuum extractor to make the delivery process smoother and safer. However, there is no biomechanical literature focused on the imposed effects of a vacuum extractor prepared with different materials and vacuum pressure on the fetal head during the process of delivery. Therefore, we first established and performed the finite element analytical model to explore the influences of vacuum extractors manufactured from different materials on the fetal head under various extractive pressures. The model of the vacuum extractor was designed as a hemispherical shape, and the material of the vacuum extractor was composed of silicone rubber and stainless steel for comparison. Four different vacuum pressures (500 cm H2O, 600 cm H2O, 700 cm H2O, and 800 cm H2O) were applied as the factors for investigation. The reaction force on the fetal head, von Mises stress of vacuum extractor, and von Mises stress on the skull of fetal head were measured and analyzed to evaluate the effects. The results revealed that subtle divergent influences of different vacuum pressures were observed, and the stainless-steel vacuum extractor induced a larger reaction force (358.04–361.37 N), accompanied with stress (13.547–13.675 MPa), on the fetal head than non-metallic or relatively softer materials. The results provide a reliable basis for selecting proper vacuum extractor during operative delivery to avoid obstetrical complications, such as scalp scratch, cephalohematoma and even intracerebral hemorrhage.

Stress Analysis of Adhesive Bonding of Urea Granulator Fluidization Bed

2014 ◽  
Vol 554 ◽  
pp. 160-164
Author(s):  
Abu Nor Bakyah ◽  
Mohd Afendi ◽  
Mohd Shukry Abdul Majid ◽  
Abdul Rahman Abdullah ◽  
Abu Bakar Shahriman
Keyword(s):  
Finite Element ◽  
Stress Analysis ◽  
Adhesive Bonding ◽  
Steel Plate ◽  
Von Mises Stress ◽  
Lower Stress ◽  
Finite Element Package ◽  
Adhesive Thickness ◽  
Von Mises ◽  
Different Thickness

Stress analysis of adhesive bonding of urea granulator fluidization bed was performed by using finite element method. The main objective of this project is to develop an alternative joining technique for urea granulator fluidizationbed by using adhesive bonding. The problem can solve by using commercial finite element package ANSYS version 13.0. T-joint and double T-joint are the main adhesive joints which will be focused in this project. The stresses on stainless steel plate can reduce by increasing the thickness of adhesive as demonstrated in numerical analysis results. Different thickness of adhesive will give different value of maximum von Mises stress. It shows that greater thickness resulted in higher maximum. This analysis proves that increasing the adhesive thickness will reduces the joint strength because stress was concentrated more on the adhesive interfaces. The adhesive bonding on T-joint is stronger than other design of joint because it need lower stress. It followed by first design of double T-joint and second design of double T-joint.

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