Study on the Fatigue Life of Fully-Automatic Hydraulic Press Beam Based on Finite Element and Mechanical Materials

2012 ◽  
Vol 531 ◽  
pp. 613-616
Author(s):  
Zhi Cheng Huang ◽  
Ze Lun Li
Keyword(s):  
Finite Element ◽  
Fatigue Life ◽  
Hydraulic Press ◽  
Structure Design ◽  
Life Assessment ◽  
Practical Significance ◽  
Stress And Strain ◽  
Element Analysis ◽  
Fully Automatic ◽  
Object Of Study

Took a type of fully-automatic hydraulic press beam as the object of study, established its 3D model by CAD Pro-E, and then import them into finite element analysis to analyze the value and distribution of the stress and strain, finally studied the fatigue life of the beam according to the finite element static analysis result and the S-N curve of the beam material by using ANSYS fatigue analysis module. The methods and conclusions have practical significance to understand the hydraulic press structure and improve on the structure design and life assessment of the fully-automatic hydraulic press beam.

Study on the Fatigue Life of Fully-Automatic Hydraulic Press Pull Rods Based on Finite Element and Mechanical Materials

2012 ◽  
Vol 580 ◽  
pp. 70-73
Author(s):  
Zhi Cheng Huang ◽  
Bai Qing Zhang ◽  
Han Xu ◽  
Wen Han
Keyword(s):  
Finite Element ◽  
Fatigue Life ◽  
Work Force ◽  
Hydraulic Press ◽  
Structure Design ◽  
Life Assessment ◽  
Practical Significance ◽  
Element Analysis ◽  
Fully Automatic ◽  
Object Of Study

Fully-automatic hydraulic press is one of the key mechanical equipments of ceramic wall and floor tiles production line. The four pull rods of the frame withstand the all work force when it works, so took a type of fully-automatic hydraulic press as the object of study, established the 3D model of its pull rods by CAD software Pro-E, and then import them into finite element analysis software to analysis the value and distribution of the stress and strain, finnly studied the fatigue life of the pull rods according to the finite element static analysis result and the S-N curve of the pull rods material by using ANSYS fatigue analysis module. The methods and conclusions have practical significance to understand the hydraulic press structure and improve on the structure design and life assessment of the fully-automatic hydraulic press beam.

Formulation of Three-Dimensional Green’s Function and its Application to Fatigue Life Evaluation of Pressurizer

2006 ◽  
Vol 324-325 ◽  
pp. 387-390
Author(s):  
Yoon Suk Chang ◽  
Shin Beom Choi ◽  
Jae Boong Choi ◽  
Young Jin Kim ◽  
Myung Jo Jhung ◽  
...  
Keyword(s):  
Finite Element ◽  
Fatigue Life ◽  
Green’S Function ◽  
Green's Function ◽  
Three Dimensional ◽  
Stress Transfer ◽  
Life Assessment ◽  
Element Analysis ◽  
Fatigue Evaluation ◽  
Effective Assessment

Major nuclear components have been designed by conservative codes to prevent unanticipated fatigue failure. However, more realistic and effective assessment is necessary in proof of continued operation beyond the design life. In the present paper, three-dimensional stress and fatigue evaluation is carried out for pressurizer employing complex full geometry itself instead of conventional discrete subcomponents. For this purpose, temperature and mechanical stress transfer Green’s functions are derived from finite element analyses and applied to critical locations of pressurizer. In accordance with comparison of resulting stresses obtained from the Green’s function and detailed finite element analysis, suitability of the specific Green’s function is investigated. Finally, prototype of fatigue life assessment results is provided along with relevant ongoing activities.

CAD/CAE on the Mould Plates of Vertical Type High-Pressure Grouting Machine

2012 ◽  
Vol 538-541 ◽  
pp. 2681-2684
Author(s):  
Zhi Cheng Huang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
High Pressure ◽  
3D Model ◽  
Stress And Strain ◽  
Analysis Software ◽  
Element Analysis ◽  
Pressure Grouting ◽  
Object Of Study

Took a type of ceramics for daily use vertical type high pressure grouting machine as the object of study, study the stress and strain of its upper and lower mould plates. Established their 3D model by CAD software Pro-E, and then import them into finite element analysis software to analysis the value and distribution of the stress and strain. The analysis results can provide some reference for design, and have some engineering and practical value.

Fatigue Life Assessment of a Ship Unloader Crane

2014 ◽  
Vol 945-949 ◽  
pp. 1086-1089
Author(s):  
Bin Xu ◽  
Tao Zhang ◽  
Feng Qi Wu ◽  
Zhen Rong Yan
Keyword(s):  
Finite Element ◽  
Fatigue Life ◽  
Residual Life ◽  
Dynamic Properties ◽  
Life Assessment ◽  
Strength Analysis ◽  
Dynamic Resistance ◽  
Element Analysis ◽  
Experimental Stress Analysis ◽  
Fatigue Life Assessment

Ship unloader crane was widely used in transportation, and uploaded or unloaded cargoes from ships, which could influence efficiency and benefits of transportation greatly. In order to improve the reliability and safety, and decrease its risk in working flow, a method of fatigue life assessment was proposed in this paper. According to related standards and properties of risk, finite element method and experimental stress analysis were integrated to assess the working condition of a ship unloader crane. Finite element models of primary structures subjected to loads were built to achieve dynamic properties, which could supply a basic reference to experiment and guidance to locate the tested positions. Afterwards, wireless dynamic resistance strain-gauges were adopted to execute static and dynamic stress, and the tested results combined with finite element analysis were applied to strength analysis. Based on nominal stress and Miner principle, rainflow method was developed to fatigue life assessment of this ship unloader crane. The final results indicated that residual life of this crane was 4.67 years.

Life Assessment of Turbine Components Through Experimental and Numerical Investigations

2013 ◽  
Vol 135 (2) ◽  
Author(s):  
Dianyin Hu ◽  
Rongqiao Wang ◽  
Guicang Hou
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Fatigue Life ◽  
Life Prediction ◽  
Life Assessment ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Creep Fatigue ◽  
Turbine Component ◽  
Good Agreement

A new lifetime criterion for withdrawal of turbine components from service is developed in this paper based on finite element (FE) analysis and experimental results. Finite element analysis is used to determine stresses in the turbine component during the imposed cyclic loads and analytically predict a fatigue life. Based on the finite element analysis, the critical section is then subjected to a creep-fatigue test, using three groups of full scale turbine components, attached to an actual turbine disc conducted at 750 °C. The experimental data and life prediction results were in good agreement. The creep-fatigue life of this type of turbine component at a 99.87% survival rate is 30 h.

Numerical Simulation of Stress and Deformation on Heat Transfer

2011 ◽  
Vol 422 ◽  
pp. 842-845
Author(s):  
Xue Ping Wang ◽  
Ying Zhang ◽  
Pan Li ◽  
Zhen Wei Zhang
Keyword(s):  
Heat Transfer ◽  
Numerical Simulation ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Heat Exchange ◽  
Structure Design ◽  
Stress And Strain ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Stress And Deformation

This paper primarily simulates the heat exchange part’s stress and strain situation under the load of temperature and gravity and their coupling impact aiming at obtaining the stress and deformation distribution. The authors took advantage of the method of the finite element analysis to study the stress and strain situation. Through the analysis, each part of the transfer’s stress and strain can be calculated. The conclusion of this paper provides the basis for the further enhancement of the machine life and optimization of the structure design.

Application of Two Methods for Notch Fatigue Life Prediction

2011 ◽  
Vol 488-489 ◽  
pp. 654-657
Author(s):  
Radu Negru ◽  
Liviu Marsavina ◽  
Hannelore Filipescu ◽  
Cristiana Caplescu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Fatigue Life ◽  
Reduction Factor ◽  
Volumetric Method ◽  
Life Assessment ◽  
Strength Reduction Factor ◽  
Element Analysis ◽  
Linear Elastic ◽  
Notched Specimens

The aim of this paper is the application of two methods for notch fatigue life assessment, methods which are based on finite element analysis: the theory of critical distances and the volumetric method. Firstly, un-notched and notched specimens (for three different geometries) were tested in tension under constant-amplitude loading. The use of theory of critical distances (TCD) to predict the notch fatigue life involves the determination of the material characteristic length L based on experimental results obtained for the un-notched and one type of notched specimens. For the others notched geometries, based on linear-elastic finite element analysis, the fatigue strength is predicted using the TCD. In order to apply the volumetric method, elastic-plastic stress field around notches are considered and notch strength reduction factor are determined. Finally, the predictions of the two methods were compared with experimental fatigue data for notched specimens.

scholarly journals Fatigue life assessment of welded joints in a crane boom using different structural stress approaches

2019 ◽  
Vol 13 (2) ◽  
pp. 5048-5073
Author(s):  
Brahami Riad ◽  
Hamri Okba ◽  
Sfarni Samir
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Fatigue Life ◽  
Fatigue Strength ◽  
Industrial Structure ◽  
Life Assessment ◽  
Structural Stress ◽  
Element Analysis ◽  
Tubular Joints ◽  
Fatigue Life Assessment

This article presents a study of the fatigue strength of welded parts in a crane boom. First, a finite element analysis was carried out over the whole structure. Two critical welded zones were identified and a detailed analysis was carried on them, in the form of sub-models. Three different approaches for estimating the structural stress in welded zones, were presented and applied to each sub-model. Results were compared and discussed. The evaluation of fatigue resistance by the use of appropriate S-N curves for each method was also carried out and discussed. The use of these approaches on a complex industrial structure, and on tubular joints with hollow sections required to perform many adaptations and to solve several difficulties presented hereafter.

Finite Element Analysis for Structure of Airborne Evaporation Cycle System

2014 ◽  
Vol 687-691 ◽  
pp. 468-471
Author(s):  
Yin Sai Guo ◽  
Yi Zhang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Theoretical Basis ◽  
Structure Design ◽  
Stress And Strain ◽  
Allowable Stress ◽  
Element Analysis ◽  
Modal Frequency ◽  
Cycle System ◽  
Stress Diagram

Structure design of airborne evaporation cycle system is performed in PROE. As structure is an important bearing component, its performance directly affects the life of the system. Statics analysis is made by using ANSYS to get the deformation and stress diagram. Compared with allowable stress and strain, it verifies that the structure of the design meets the requirements. Modal analysis is made to get the previous order modal frequency and the deformation, which provides theoretical basis for further optimization.

The Finite Element Analysis of Car's Rear Axle and Prediction of Fatigue Life

2014 ◽  
Vol 490-491 ◽  
pp. 616-620 ◽  
Author(s):  
Li Li
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Fatigue Life ◽  
Rear Axle ◽  
Stress And Strain ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Structure Strength ◽  
Strength And Stiffness ◽  
Calculation Analysis

This paper makes a static strength calculation and fatigue life prediction of a car's rear axle. To find out the dangerous stress and strain points of the bridge shell by making calculation analysis of the structure strength and stiffness of the rear axle bridge shell by using finite element analysis software, MSC.Patran and MSC.Nastran. Using MSC.Fatigue software on the rear axle to make an analysis of its fatigue life base on the finite element analysis, and make a modal analysis with MSC.Nastran software.

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