Dynamic response analysis and fatigue life evaluation of heavy haul railway steel truss bridges

2015 ◽  
pp. 81-88
Keyword(s):  
Fatigue Life ◽  
Dynamic Response ◽  
Response Analysis ◽  
Truss Bridges ◽  
Life Evaluation ◽  
Steel Truss ◽  
Heavy Haul ◽  
Fatigue Life Evaluation ◽  
Steel Truss Bridges ◽  
Heavy Haul Railway

Study on Transient Response Analysis and Fatigue Life Evaluation of Water Pump Volute Casing under Impact Load

2012 ◽  
Vol 155-156 ◽  
pp. 550-554
Author(s):  
Min Li ◽  
Zeng Hui Yin ◽  
Kui Shi ◽  
Jian Xin Liu ◽  
Hui Yong Du
Keyword(s):  
Fatigue Life ◽  
Impact Load ◽  
Flaw Detection ◽  
Bench Test ◽  
Response Analysis ◽  
Material Strength ◽  
Water Pump ◽  
Life Evaluation ◽  
Curve Method ◽  
Fatigue Life Evaluation

A water pump volute casing was found leak after 359 hours in a 500-hour-durability bench test. The flatness of big surface, flaw detection and material strength of the pump volute casing were tested, the failure reason was identified and the structure was optimized. The fatigue life of the optimization pump volute casing was simulated by applying S-N curve method, and the optimization structure was also identified successfully by experiments.

A Study on Fatigue Life Evaluation of Pressure Vessel Made of ASME SA240-316L Material Using Numerical Analysis

2019 ◽  
Vol 893 ◽  
pp. 1-5 ◽  
Author(s):  
Eui Soo Kim
Keyword(s):  
Finite Element ◽  
Fatigue Life ◽  
Pressure Vessel ◽  
Life Prediction ◽  
Pressure Vessels ◽  
Physical Damage ◽  
Element Analysis ◽  
Internal Damage ◽  
Life Evaluation ◽  
Fatigue Life Evaluation

Pressure vessels are subjected to repeated loads during use and charging, which can causefine physical damage even in the elastic region. If the load is repeated under stress conditions belowthe yield strength, internal damage accumulates. Fatigue life evaluation of the structure of thepressure vessel using finite element analysis (FEA) is used to evaluate the life cycle of the structuraldesign based on finite element method (FEM) technology. This technique is more advanced thanfatigue life prediction that uses relational equations. This study describes fatigue analysis to predictthe fatigue life of a pressure vessel using stress data obtained from FEA. The life prediction results areuseful for improving the component design at a very early development stage. The fatigue life of thepressure vessel is calculated for each node on the model, and cumulative damage theory is used tocalculate the fatigue life. Then, the fatigue life is calculated from this information using the FEanalysis software ADINA and the fatigue life calculation program WINLIFE.

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