Surface Crack Growth Simulation and Residual Life Assessment of High-speed Train Axles Based on Extended Finite Element Method

2022 ◽  
pp. 106043
Author(s):  
Dongdong Ji ◽  
Jiwang Zhang ◽  
Kejian Yi ◽  
Yichang Huang ◽  
Qi Lu ◽  
...  
Keyword(s):  
High Speed ◽  
Extended Finite Element Method ◽  
Residual Life ◽  
Life Assessment ◽  
High Speed Train ◽  
Extended Finite Element ◽  
Growth Simulation ◽  
Crack Growth Simulation ◽  
Residual Life Assessment ◽  
Surface Crack Growth

scholarly journals Fatigue strength and residual life assessment of high-speed railway vehicle used S38C hollow axles

2019 ◽  
Vol 49 (7) ◽  
pp. 840-850
Author(s):  
YaNan HU ◽  
GuoZheng KANG ◽  
WenJing WANG ◽  
ShengChuan WU ◽  
YuXuan LIU ◽  
...  
Keyword(s):  
Fatigue Strength ◽  
High Speed ◽  
Residual Life ◽  
Life Assessment ◽  
Railway Vehicle ◽  
High Speed Railway ◽  
Residual Life Assessment

scholarly journals Prise en compte de discontinuités en espace et en temps par la méthode des éléments finis étendus

2007 ◽  
pp. 827-843
Author(s):  
Julien Réthoré ◽  
Anthony Gravouil ◽  
Alain Combescure
Keyword(s):  
Extended Finite Element Method ◽  
Continuity Condition ◽  
Dynamic Crack Propagation ◽  
Dynamic Crack ◽  
Shape Functions ◽  
Extended Finite Element ◽  
Weak Formulation ◽  
Growth Simulation ◽  
Crack Growth Simulation ◽  
Éléments Finis

This paper is aimed at presenting an application of the extended finite element method to the time variable in the framework of dynamic crack propagation. We take advantage of the partition of the unity properties of finite elements and use an enriched basis of shape functions in space as well as time. To solve the problem in time, we use a weak formulation including a continuity condition for the velocity. It allows to model mechanical problems with space and time discontinuities. Applications to dynamic crack growth simulation are presented.

Residual service life estimation of bridges

2021 ◽  
Author(s):  
Mayank Bajaj ◽  
Biswajit Bhattacharjee
Keyword(s):  
Residual Life ◽  
Concrete Bridges ◽  
Life Assessment ◽  
Residual Service Life ◽  
Chloride Ingress ◽  
Service Life Estimation ◽  
Residual Life Assessment ◽  
Existing Bridges ◽  
Residual Service

<p>While concrete structures perform well in many situations, lack of durability has emerged as a significant issue for asset owners. A review of past bridge failures was done to identify the most probable causes of bridge failures. This study has tended to focus on current models used for estimating the time to deterioration of concrete bridges instigated by Chloride ingress and Fatigue. Subsequently, mathematical modelling of the best-suited deterioration model is done to arrive at the residual life of two existing bridges. This work has highlighted high variability in the parameters used to describe the durability related properties of in-situ aged concrete. A realistic residual life assessment can be achieved by correct evaluation of these parameters by periodic testing of bridge samples</p>

Criterial relationships for residual life assessment of materials

2006 ◽  
Vol 38 (4) ◽  
pp. 348-353 ◽  
Author(s):  
A. A. Lebedev ◽  
V. M. Mikhalevich
Keyword(s):  
Residual Life ◽  
Life Assessment ◽  
Residual Life Assessment

Residual Life Assessment for Boiler Pressure Components Based on Measurements of Creep Strains

1988 ◽  
Vol 110 (3) ◽  
pp. 308-313 ◽  
Author(s):  
F. Mlynarski ◽  
J. Taler
Keyword(s):  
Residual Life ◽  
Life Assessment ◽  
Strain Measurements ◽  
Years Of Service ◽  
Residual Life Assessment ◽  
Outside Diameter ◽  
Creep Strains

This paper discusses different methods for calculating the residual life for boiler pressure components operating under creep conditions, based on tube outside diameter strain measurements. These measurements were made for over 20 yr. The methods have been applied to the residual life calculation for pipelines of 20 or more years of service. Then the results have been compared.

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