Effect of Parameters of Notch on Fatigue Life of Shaft Based on Product Lifecycle Management

2010 ◽  
Vol 638-642 ◽  
pp. 3864-3869 ◽  
Author(s):  
You Tang Li ◽  
Bo Chen ◽  
Chang Feng Yan
Keyword(s):  
Fatigue Life ◽  
Assessment Method ◽  
Product Lifecycle Management ◽  
Mechanics Model ◽  
Fatigue Design ◽  
Influencing Parameters ◽  
Set Up ◽  
Tip Radius ◽  
Lifecycle Management ◽  
Circumferential Notch

For designing the fatigue life of shaft with a circumferential notch exactly, the influencing factors have been analyzed completely. The modified mechanics model to estimate the fatigue life of shaft with a circumferential notch is set up. The assessment method of fatigue life for shaft with a circumferential notch is put forward. The effects of notch on stress concentration factor and fatigue life of shaft with a circumferential notch are discussed and the influencing parameters are obtained. The results show that the tip radius of notch has a great effect on fatigue life of shaft; on the other hand, the open angle of notch has a little effect on it. The results will establish the base of anti-fatigue design of shaft.

Effect of Wear on the Fatigue Life of Annular Notched Shaft Based on Product Lifecycle Management

2009 ◽  
Vol 417-418 ◽  
pp. 469-472 ◽  
Author(s):  
You Tang Li ◽  
Zhi Yuan Rui ◽  
Chang Feng Yan
Keyword(s):  
Fatigue Life ◽  
Assessment Method ◽  
Product Lifecycle Management ◽  
Product Lifecycle ◽  
Mechanics Model ◽  
Fatigue Design ◽  
Fatigue Life Estimation ◽  
Set Up ◽  
Lifecycle Management ◽  
Circumferential Notch

Anti-fatigue design is a key content in product lifecycle management and there are many factors to affect the fatigue life of parts. For designing the fatigue life of shaft with a circumferential notch exactly, the influencing factors have been analyzed completely. The mechanics model for assessing the fatigue life of shaft is set up. The assessment method of fatigue life for shaft is set up according to the traditional fatigue life estimation. The effect of wearing parameter to fatigue life is analyzed and the results show that the wear is an important factor to affect the fatigue life.

The Influencing Factors and Assessment Rule of Fatigue Life of Shaft Based on Product Lifecycle Management

2007 ◽  
Vol 561-565 ◽  
pp. 2253-2256 ◽  
Author(s):  
You Tang Li ◽  
Ping Ma ◽  
Jun Tian Zhao
Keyword(s):  
Fatigue Life ◽  
Influencing Factors ◽  
Axial Stress ◽  
Assessment Method ◽  
Product Lifecycle Management ◽  
Product Lifecycle ◽  
Fatigue Design ◽  
Main Factors ◽  
Set Up ◽  
Lifecycle Management

Product lifecycle management is one of the main developmental aspects of advanced manufacturing technology. Anti-fatigue design is the key content in product lifecycle management. For designing the fatigue life of shaft exactly and determining the assessment method, the influencing factors must be realized roundly. The mechanical model of shaft is set up at first, and then the main factors that affect the fatigue life of shaft is discussed, the interrelations of the main factors and the framework are founded. The assessment equation of fatigue life for shaft is put forward and the influencing coefficient of multi-axial stress to fatigue life is analyzed. The results of this paper will establish the base of anti-fatigue and assessment life of shaft.

Effect of Supporting Conditions on the Fatigue Life of Shaft Based on Product Lifecycle Management

2008 ◽  
Vol 385-387 ◽  
pp. 109-112 ◽  
Author(s):  
You Tang Li ◽  
Ping Ma ◽  
Ming Song
Keyword(s):  
Fatigue Life ◽  
Mechanical Design ◽  
Assessment Method ◽  
Product Lifecycle Management ◽  
Product Lifecycle ◽  
Fatigue Design ◽  
Main Factors ◽  
Influencing Parameters ◽  
Lifecycle Management ◽  
Two Sides

An anti-fatigued criterion of annularly breached shaft on mechanical design has been put forward, and the main factors that affect fatigue life of shaft are discussed. The interrelation of the main factors and the framework is founded. A new assessment method to fatigue life of shaft has been put forward according to Corten-Dolan’s theory modified Miner's rule. The effect of supporting conditions to fatigue life of shaft is discussed and the influencing parameters are obtained. The results show that the fatigue life of broad support in two sides is longer than that of narrow support in two sides. The results will establish the base of anti-fatigue design of shaft.

Anti-Fatigued Criterion of Annularly Breached Spindle on Mechanical Design

2006 ◽  
Vol 321-323 ◽  
pp. 755-758 ◽  
Author(s):  
You Tang Li ◽  
Ping Ma ◽  
Chang Feng Yan
Keyword(s):  
Mechanical Design ◽  
Product Lifecycle Management ◽  
Practical Applications ◽  
Important Field ◽  
Fracture Theory ◽  
Set Up ◽  
Prediction Techniques ◽  
Tip Radius ◽  
Lifecycle Management ◽  
The Relationship

The anti-fatigued design is an important field in product lifecycle management. A uniform criterion of annularly breached spindle was put forward in this paper. The crack, V-notch, U-notch and arc were described as breach uniformly according to the tip radius, depth and field angle of breach in the method. The connection between sharp V-notch and crack, between V-notch and U-notch has been set up. We fuse the fatigue fracture theory and life prediction techniques together on the design technology of lifecycle safety guarantee of mechanical structures. The relationship between life and detectability of the breached spindle system was discussed to provide useful guidance for practical applications. The criterion for the safety design and fracture design both of which on fα was obtained. The criterion of annular breached spindle under torsion was obtained at first and then the effects of bending to lifecycle of spindle were analyzed.

Concrete Fatigue Life Characteristics of the Different Survival Rates in the Lateral Pressure Conditions

2012 ◽  
Vol 600 ◽  
pp. 250-255
Author(s):  
Qiang Cai ◽  
Ji Ming Kong ◽  
Ze Fu Chen
Keyword(s):  
Fatigue Life ◽  
Life Stress ◽  
Failure Modes ◽  
Survival Curve ◽  
Survival Rates ◽  
Life Distribution ◽  
Fatigue Design ◽  
Set Up ◽  
Fatigue Equation ◽  
Two Parameter

Under cyclic loading of concrete structures, fatigue failure is the main failure modes of fatigue, which has become the fatigue design of concrete structure must be considered, then the concrete fatigue studies must clarify the fatigue life of concrete under different survival curve S-N curve. Based on the statistics of the two parameter Weibull distribution theory, obtain the concrete under different survival rates of fatigue life distribution, namely to improve survival, reduce the fatigue life; stress level is reduced, the fatigue life is increased; and has set up more than 50% under different survival rates of concrete fatigue equation.

The Influencing Factors and Assessment Model of Fatigue Life of Shaft

2013 ◽  
Vol 772 ◽  
pp. 427-431
Author(s):  
Yong Zhuang Yuan
Keyword(s):  
Comparative Analysis ◽  
Fatigue Life ◽  
Influencing Factors ◽  
Real Life ◽  
Product Lifecycle Management ◽  
Assessment Model ◽  
Product Lifecycle ◽  
Predicting Model ◽  
Design Life ◽  
Lifecycle Management

Predicting the life of part is emphasis base of Product Lifecycle Management, and is emphasis progress of modern product design. By exact and full analyze the influencing factors of real life of shaft, contribute to real life and design life coincidence of shaft. It can decrease property damage with product ahead of schedule failure. By comparative analysis and analytical method researched the influencing factors of shaft in used . The life predicting model of reality use is discussed and amended at present. It draws a reasonable predicting model of fatigue life. The model includes influencing factors of all in actual and decrease the error of predicting life compare with the life of real. It will establish the base of design of anti-fatigue of shaft.

Uniform Model and Fracture Criteria of Annularly Breached Bars under Bending

2006 ◽  
Vol 321-323 ◽  
pp. 751-754 ◽  
Author(s):  
You Tang Li ◽  
Zhi Yuan Rui ◽  
Chang Feng Yan
Keyword(s):  
Stress Field ◽  
Displacement Field ◽  
Product Lifecycle Management ◽  
Fracture Criteria ◽  
Product Lifecycle ◽  
Safety Design ◽  
Uniform Model ◽  
Tip Radius ◽  
Lifecycle Management

A uniform model, in which the crack, V-notch, U-notch and arc are described as breach uniformly, is put forward in this paper. The tip radius, depth and field angle of breach are regarded as the parameter of annularly breached bar. The stress field and displacement field near the tip of the annularly breached bar under bending, in which takes fα(a/b) as its descriptive parameter, was given. All forms of breaches according to the change of tip radius, depth and field angle were discussed. The effects of parameters on fα(a/b) in bending were analyzed. The criteria for the safety design and fracture design both of which on fα(a/b) were obtained. The results not only can be applied widely to anti-fracture design but also be used for reference in anti-fatigued design in product lifecycle management.

Effect of Notched Parameters on Low Cycle Fatigue Life of Shaft with Annular Notch under Cantilever Bending

2011 ◽  
Vol 462-463 ◽  
pp. 136-141
Author(s):  
You Tang Li ◽  
Hong Yan Duan ◽  
Rui Feng Wang
Keyword(s):  
Fatigue Life ◽  
Life Prediction ◽  
Low Cycle Fatigue ◽  
Fatigue Life Prediction ◽  
Open Angle ◽  
Cycle Fatigue ◽  
Fatigue Design ◽  
Cantilever Bending ◽  
Tip Radius ◽  
Special Clamp

The special clamp for fatigue of shaft under bending, torsion, and bending-torsion that used on the fatigue machine is designed and manufactured. The low-cycle fatigue experiments of shaft with annular notch under cantilever bending have been made. Through experiments and analysis, the effects of tip radius, depth and open angle of notch on low cycle fatigue life of shaft with annular notch under cantilever bending are obtained. The method and results will play an important role on the fatigue life prediction and anti-fatigue design.

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