scholarly journals Fatigue Analysis of Mobile Maintenance Platform Based on Ansys Workbench

2018 ◽  
Vol 175 ◽  
pp. 03048
Author(s):  
Yongliang Yuan
Keyword(s):  
Fatigue Life ◽  
Optimization Design ◽  
Strength Analysis ◽  
Stress And Strain ◽  
Large Space ◽  
Damage Theory ◽  
Simulation Results ◽  
Cumulative Fatigue Damage ◽  
Deformation Stress ◽  
Ansys Workbench

In order to investigate the performance of the mobile maintenance platform, Ansys Workbench was used to analyze the strength analysis of the mobile maintenance platform. The deformation, stress, and strain were obtained. The fatigue module was used to analyze the fatigue of the mobile maintenance platform and the fatigue life based on the cumulative fatigue damage theory. The simulation results show that the strength of the mobile maintenance platform is sufficient, and its lifetime is as high as 19.8 years. The mobile maintenance platform has a large space for optimization and this paper provides a basis for future structural optimization design.

Fatigue Life Assessment of Crane Reel

2011 ◽  
Vol 383-390 ◽  
pp. 2941-2944
Author(s):  
Wei Ming Du ◽  
Fei Xue
Keyword(s):  
Finite Element Method ◽  
Fatigue Life ◽  
Fatigue Damage ◽  
Residual Life ◽  
Life Assessment ◽  
Life Estimation ◽  
Fatigue Life Assessment ◽  
Weld Fatigue ◽  
Simulation Results ◽  
Cumulative Fatigue Damage

The crane reel is generally manufactured by section welding method when the diameter is over 380mm. With the cumulative fatigue damage principle which is based on stress S-N curve, the fatigue damage of one crane reel is analyzed by finite element method, the reel weld fatigue strength and fatigue life are calculated, and the simulation results are proved to be reliable. This method provides an efficient reference for crane reel design and residual life estimation.

Effect of Interference on Stress and Strain Distribution on the Spherical Sealing Cup of a PIG in Dented Pipeline

2019 ◽  
Author(s):  
Hang Zhang ◽  
Jinhui Dong ◽  
Can Cui ◽  
Ningsheng Liao
Keyword(s):  
Strain Distribution ◽  
Optimization Design ◽  
Oil And Gas ◽  
Model Simulation ◽  
Outer Edge ◽  
Stress And Strain ◽  
Pipeline Transportation ◽  
Pipeline Inspection ◽  
Simulation Results ◽  
Stress And Strain Distribution

Abstract Regular pigging operation of the pipeline inspection gauges (PIGs) is crucial for pipeline transportation. However, the PIG is often stuck when it runs in the oil and gas pipeline due to the interaction between spherical sealing cup and dent inside the pipe. The stress and strain distribution of the outer edge of the spherical sealing cup can provide a reference to the problem of understanding the blockage. In this study, numerical simulation of a PIG with spherical sealing cups runs through a pipe with dented wall is presented using MSC Marc 2016. Effects of the interference (δ) of the spherical sealing cup on the stress and strain distribution on the outer edge of the cup were discussed based on the model. Simulation results indicate that the smaller the thickness of the spherical sealing cup, the greater the effect of the interference of the cup on the stress. And the thickness of the cup should not be too small, an example of the failure of pigging due to the small thickness of the cup and the increase in the interference is given. The conclusions obtained in this study can contribute to the optimization design of the PIGs.

The Optimization Design of Spindle Box for Large Friction Welder Based on the Sensitivity Analysis

2013 ◽  
Vol 655-657 ◽  
pp. 502-505
Author(s):  
Rui Cheng Feng ◽  
Hao Xu ◽  
Zhi Yuan Rui ◽  
Hai Yan Li ◽  
Bao Cheng Zhou
Keyword(s):  
Sensitivity Analysis ◽  
Finite Element ◽  
Static Analysis ◽  
Optimization Design ◽  
Simulation Software ◽  
Stress And Strain ◽  
Strain Response ◽  
Optimization Scheme ◽  
Element Simulation ◽  
Ansys Workbench

Focusing on the problem of accuracy machining to the friction welder,taking the spindle box of friction welder as the research object,the finite element simulation software of ANSYS workbench is applied to the static analysis of the box ,then the stress and strain response can be available. And through the using of sensitivity analysis optimization scheme is proposed ,which prerequisite basis is obtained for the optimization design and the improvement of breed to the spindle box of large friction welder

Fatigue Life Prediction of Fan Blade Using Nominal Stress Method and Cumulative Fatigue Damage Theory

2020 ◽  
Vol 37 (2) ◽  
pp. 135-139 ◽  
Author(s):  
Hong-Zhong Huang ◽  
Cheng-Geng Huang ◽  
Zhaochun Peng ◽  
Yan-Feng Li ◽  
Hengsu Yin
Keyword(s):  
Fatigue Life ◽  
Aircraft Engine ◽  
Nominal Stress ◽  
Load Spectrum ◽  
Element Analysis ◽  
Service Operation ◽  
Damage Theory ◽  
Fatigue Notch Factor ◽  
Fan Blade ◽  
Cumulative Fatigue Damage

AbstractFan blade is one of the key parts used in aircraft engine and its failure is mainly caused by fatigue fracture. This paper aims to predict fatigue life of fan blade during its service operation. First, the effective load and stress of fan blade are obtained by using finite element analysis and simulation. Second, the fatigue notch factor of fan blade is determined by using the nominal stress method. Then, the material properties of fan blade are used to correct and obtain the $S - N$ curve of fan blade. Finally, according to the actual load spectrum of three working loading cycles in 900h, the Miner’s damage accumulation rule is employed to predict the fatigue life of fan blade.

scholarly journals Fatigue Behavior of Rail Connections on Semi –High Speed and High Speed Rail Networks

2020 ◽  
Vol 9 (4) ◽  
pp. 722-737
Keyword(s):  
Fatigue Life ◽  
High Speed ◽  
Fatigue Behavior ◽  
Wheel Load ◽  
High Speed Rail ◽  
Continuous Welded Rail ◽  
Normal Speed ◽  
Simulation Results ◽  
Made In ◽  
Ansys Workbench

Rail joint is the most vulnerable and weakest part in the rail structure. Bolted rail joints and welded rail joints are the most predominantly used rail joints. In recent times, continuous welded rail joints are widely used. The literature study exhibits that the performance of welded rail joints are comparatively better than the bolted rail joints. This project mainly deals with the fatigue behavior of welded rail joints subjected to normal speed, semi-high speed and high speed rail networks with respect to rail joint location on the sleeper. The rail joint kept on two conditions, mainly rail joint on top of the sleeper and rail joint in between the sleepers. The model was created and the respective finite element analyses were made in ANSYS Workbench software. The rail joint was analyzed for the movement of wheel load on the rail for all speed conditions mentioned. The butt joint was given at the region of rail joint and the fatigue life results were obtained in the analyses made in ANSYS Workbench. The analyses methods covers the rail and wheel model creation, application of corresponding loads and supports and the simulation results were obtained. The simulation results portrays that when the continuous welded rail joint is located on the sleeper, the fatigue life of the rail joint in both the normal speed and semi-high speed conditions is higher when compared to the fatigue life of rail joint in high speed condition. And also when the welded rail joints are located in between two sleepers the rail joint in high speed rail networks provide increased fatigue life when compared with the rail joints located in normal and semi high speed conditions. This research provides a beneficiary effect and serves as a base for increasing the fatigue life of the rail networks.

Fatigue Life Analysis of Turbine Disks Based on Load Spectra of Aero-engines

2016 ◽  
Vol 33 (1) ◽  
Author(s):  
Yan-Feng Li ◽  
Zhiqiang Lv ◽  
Wei Cai ◽  
Shun-Peng Zhu ◽  
Hong-Zhong Huang
Keyword(s):  
Fatigue Life ◽  
Fatigue Damage ◽  
Load Spectra ◽  
Turbine Disks ◽  
Damage Theory ◽  
Fatigue Life Analysis ◽  
Cumulative Fatigue Damage ◽  
Aero Engines ◽  
Main Components ◽  
The Relationship

AbstractLoad spectra of aero-engines reflect the process of operating aircrafts as well as the changes of parameters of aircrafts. According to flight hours and speed cycle numbers of the aero-engines, the relationship between load spectra and the fatigue life of main components of the aero-engines is obtained. Based on distribution function and a generalized stress–strength interference model, the cumulative fatigue damage of aero-engines is then calculated. After applying the analysis of load spectra and the cumulative fatigue damage theory, the fatigue life of the first-stage turbine disks of the aero-engines is evaluated by using the

scholarly journals Strength Analysis of a PTO (Power Take-Off) Gear-Train of a Multi-Purpose Cultivator during a Rotary Ditching Operation

Energies ◽  
2019 ◽  
Vol 12 (6) ◽  
pp. 1100 ◽  
Author(s):  
Yeon-Soo Kim ◽  
Pa-Ul Lee ◽  
Wan-Soo Kim ◽  
Oh-Won Kwon ◽  
Chang-Won Kim ◽  
...  
Keyword(s):  
Fatigue Life ◽  
Service Life ◽  
Safety Factor ◽  
Gear Train ◽  
Measuring System ◽  
Soil Conditions ◽  
Strength Analysis ◽  
Actual Measurement ◽  
Simulation Results ◽  
Fatigue Life Analysis

Optimal design of transmission gears is important to ensure product durability and reliability. This study measured a multi-purpose cultivator during a rotary ditching operation and analyzed the strength of the power take off (PTO) gear-train for the cultivator using analysis software (KISSsoft, KISSsoft AG—A Gleason Company, Bubikon, Switzerland) based on ISO 6336 standards and a modified Miner’s rule. A load measurement system was installed on the cultivator to measure the load on the PTO shaft. To measure the load on the PTO shaft, the load measuring system consisting of a data acquisition board (NI USB-6212, National Instruments, Austin, TX, USA) and a torque sensor was installed on the cultivator. Rotary ditching operations were conducted at two ground speeds and two PTO rotational speeds on a field with the same soil conditions. The measured load data were constructed using the rainflow-counting algorithm and the Smith-Watson-Topper equation. When the ground speed or PTO rotational speed increased, the average and maximum PTO torque increased significantly. The average measured torque ratio to rated torque of the PTO input shaft (19.6 Nm) was in the range of 50.1–105.9%. The simulation results using the actual measurement load indicated that the strength of the PTO gear-train tended to decrease with higher transmission gear stage and lower PTO gear stage except for the G2 and G3 gears. The simulation results of the safety factor for contact stress were lower than the minimum safety factor of ‘1.0’ at the T2P1 gear stage (G4 and G2). The simulation results of the fatigue life analysis showed fatigue life of less than service life (1000 h) at T2P2 (G2) and T2P1 (G2, G3, and G4). The simulation results indicate that there is a possibility of gear failure before service life at the T2P1 (G2, G3, and G4) and T2P2 (G2). It is known that the weak parts (G2, G3, and G4) should be the focus of design optimization through gear strength simulation to meet upward of a 1.0 safety factor and service life.

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