Fatigue life of structural plywood under two-stage panel shear load: a new cumulative fatigue damage theory

2007 ◽  
Vol 53 (3) ◽  
pp. 211-217 ◽  
Author(s):  
Takanori Sugimoto ◽  
Yasutoshi Sasaki
Keyword(s):  
Fatigue Life ◽  
Fatigue Damage ◽  
Shear Load ◽  
Two Stage ◽  
Panel Shear ◽  
Damage Theory ◽  
Cumulative Fatigue Damage

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

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.

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.

Nonlinear Cumulative Fatigue Damage Model

2011 ◽  
Vol 328-330 ◽  
pp. 1440-1444
Author(s):  
Hua Zou ◽  
Qiang Li ◽  
Shou Guang Sun
Keyword(s):  
Mathematical Model ◽  
Aluminum Alloy ◽  
Fatigue Life ◽  
Fatigue Damage ◽  
Welded Joint ◽  
Damage Model ◽  
Reasonable Explanation ◽  
Curve Method ◽  
Cumulative Fatigue Damage ◽  
Damage Rule

Cumulative fatigue damage is an important consideration in determining the fatigue life of structures. A cumulative linear damage rule cannot provide a reasonable explanation for cumulative fatigue damage, but a damage curve method based on nonlinear cumulative fatigue damage model can give a reasonable explanation. In this paper, a specific mathematical model is put forward, which is based on the damage curve method. In the model, miner formula is modified properly and an exponent formula is give out to fit the damage accumulate. According to a two-step fatigue test of aluminum–alloy welded joint, the comparison between the calculated results and the testing results is less than 5%. It shows that the model is reasonable and accuracy.

3012 Two Stage Fatigue of Wood-Based Panel under Panel Shear Load

2006 ◽  
Vol 2006.1 (0) ◽  
pp. 407-408
Author(s):  
Takanori SUGIMOTO ◽  
Yasutoshi SASAKI ◽  
Machiko TAKAHASHI
Keyword(s):  
Shear Load ◽  
Two Stage ◽  
Panel Shear

A Model to Predict Fatigue Life of Concrete Based on Total Strain Energy Density

2011 ◽  
Vol 99-100 ◽  
pp. 1018-1022
Author(s):  
Li Zhang ◽  
Si Chu Gong ◽  
Xu Dong Ma
Keyword(s):  
Fatigue Life ◽  
Energy Density ◽  
Fatigue Damage ◽  
Strain Energy Density ◽  
Strain Energy ◽  
Cumulative Damage ◽  
Total Strain ◽  
Total Strain Energy ◽  
Cumulative Fatigue Damage ◽  
Total Strain Energy Density

A law on the cumulative damage is presented basing on total strain energy induced as damage parameter to calculate the cumulative damage when the specimens of concrete subjected to fatigue loading.Then the maximum of critical cumulative damage and location of production are determined basing on the equation of cumulative fatigue damage combined with experimental result through using the finite element analysis and the critical plane method in fatigue analysis.The relation equation between the standardized critical total strain energy density and stress level is obtained by considering the impact of loading level.The fatigue life of specimens can be predicted by combining the equation of cumulative fatigue damage with the relation equation of damage and stress level and the prediction results coincide with experimental results very well.

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