Crack Propagation and Fault Diagnosis for Gears Using FEM
發(fā)布時(shí)間：2020-12-08 12:12
系統(tǒng)的狀態(tài)監(jiān)測(cè)和診斷已成為機(jī)械行業(yè)的重要研究領(lǐng)域,其發(fā)展趨勢(shì)是尋求合適的理論方法來實(shí)現(xiàn)對(duì)機(jī)械系統(tǒng)早期故障的監(jiān)測(cè)和診斷以取代機(jī)械故障后維修的現(xiàn)實(shí)。在過去二十年內(nèi),傳動(dòng)系統(tǒng)中所存在的齒輪磨損嚴(yán)重以及輪齒嚙合故障等問題越來越受到使用者的重視,尤其是齒輪裂紋擴(kuò)展和裂紋故障分析研究日益重要。已有的研究主要集中在分析齒輪輪圈的厚度對(duì)裂紋擴(kuò)展路徑的影響,和針對(duì)發(fā)生故障的齒輪傳動(dòng)系統(tǒng)直接進(jìn)行動(dòng)力仿真。對(duì)于前者,其研究方法主要是基于斷裂力學(xué)的基本理論,而這些原理往往包含大量的變量和方程,需綜合運(yùn)用各種計(jì)算機(jī)軟件才能達(dá)到裂縫擴(kuò)展路徑的預(yù)測(cè)目的。對(duì)于后者,一些研究者一方面針對(duì)齒輪傳動(dòng)系統(tǒng)進(jìn)行三維裂紋故障仿真,另一方面也通過傳統(tǒng)的分析方法來研究其他類型的齒輪故障。為了更好的進(jìn)行輪齒裂紋擴(kuò)展路徑的預(yù)測(cè),發(fā)展和豐富現(xiàn)有的齒輪故障診斷技術(shù),本文利用二維分析方法對(duì)圓柱齒輪傳動(dòng)系統(tǒng)進(jìn)行漸進(jìn)結(jié)構(gòu)優(yōu)化,進(jìn)而提出了一種新的適用方法來進(jìn)行輪齒裂紋擴(kuò)展路徑預(yù)測(cè),同時(shí)利用有限元方法對(duì)存在輪齒故障(包括裂紋、剝落等)的三維圓柱齒輪傳動(dòng)系統(tǒng)進(jìn)行動(dòng)力仿真和分析,并得出不同輪齒故障對(duì)齒輪傳動(dòng)系統(tǒng)振動(dòng)響應(yīng)的影響規(guī)律。本文的主要工作立足于有限...
【文章來源】：重慶大學(xué)重慶市 211工程院校 985工程院校 教育部直屬院校
【文章頁數(shù)】：81 頁
【學(xué)位級(jí)別】：碩士
【文章目錄】：
ABSTRACT
中文摘要
1 INTRODUCTION
1.1 Generality
1.2 Literature Survey
1.3 Thesis Outline
2 GEAR CRACK PROPAGATION PATH PREDICTION BASED ON ESO
2.1 Problem Definition
2.2 Fracture Analysis Based on LEFM
2.3 Basic Applied Stresses on Spur Gear Tooth
3 PROPOSED METHOD
3.1 Generality of Structural Evolutionary Optimization
3.2 Theoretical concept of ESO
3.3 Design Example
3.4 New Proposed Method Algorithm
3.5 Two Dimensional Finite Element Model
3.6 Results and Discussion
3.7 Comparison with Previous Researches
4 DEFECT EFFECTS ON THE VIBRATION RESPONSE OF SPUR GEAR
4.1 Research Orientation
4.2 Essential Concepts of Spur Gear
4.2.1 Basic Understanding of Spur Gear
4.3 Case Study failures on Gear teeth
5 SPUR GEAR DYNAMIC MODEL
5.1 Theoretical Vibration Model of the Spur Gear Pair
5.2 Equation of Motion
6 THREE DIMENSIONAL MODELING OF THE SPUR GEAR
6.1 3D Modeling
6.2 Model Geometry
6.3 Finite Element Modeling
6.3.1 FE Model for Dynamic Simulation
6.3.2 FE Model for gear mesh stiffness and modal analysis determination
7 SIMULATION RESULTS OF GEARING
7.1 Simulation Results
7.2 Dynamic Modeling Results
7.3 Meshing Stiffness Results
7.4 Modal Analysis Results
8 CONCLUSION
8.1 Summary
8.2 Recommendations for Future Work
Acknowledgement
REFERENCES
Appendix
【參考文獻(xiàn)】：
期刊論文
[1]Finite Element Analysis of Internal Gear in High-Speed Planetary Gear Units[J]. 葛楠,張俊. Transactions of Tianjin University. 2008(01)
本文編號(hào)：2905064
【文章來源】：重慶大學(xué)重慶市 211工程院校 985工程院校 教育部直屬院校
【文章頁數(shù)】：81 頁
【學(xué)位級(jí)別】：碩士
【文章目錄】：
ABSTRACT
中文摘要
1 INTRODUCTION
1.1 Generality
1.2 Literature Survey
1.3 Thesis Outline
2 GEAR CRACK PROPAGATION PATH PREDICTION BASED ON ESO
2.1 Problem Definition
2.2 Fracture Analysis Based on LEFM
2.3 Basic Applied Stresses on Spur Gear Tooth
3 PROPOSED METHOD
3.1 Generality of Structural Evolutionary Optimization
3.2 Theoretical concept of ESO
3.3 Design Example
3.4 New Proposed Method Algorithm
3.5 Two Dimensional Finite Element Model
3.6 Results and Discussion
3.7 Comparison with Previous Researches
4 DEFECT EFFECTS ON THE VIBRATION RESPONSE OF SPUR GEAR
4.1 Research Orientation
4.2 Essential Concepts of Spur Gear
4.2.1 Basic Understanding of Spur Gear
4.3 Case Study failures on Gear teeth
5 SPUR GEAR DYNAMIC MODEL
5.1 Theoretical Vibration Model of the Spur Gear Pair
5.2 Equation of Motion
6 THREE DIMENSIONAL MODELING OF THE SPUR GEAR
6.1 3D Modeling
6.2 Model Geometry
6.3 Finite Element Modeling
6.3.1 FE Model for Dynamic Simulation
6.3.2 FE Model for gear mesh stiffness and modal analysis determination
7 SIMULATION RESULTS OF GEARING
7.1 Simulation Results
7.2 Dynamic Modeling Results
7.3 Meshing Stiffness Results
7.4 Modal Analysis Results
8 CONCLUSION
8.1 Summary
8.2 Recommendations for Future Work
Acknowledgement
REFERENCES
Appendix
【參考文獻(xiàn)】：
期刊論文
[1]Finite Element Analysis of Internal Gear in High-Speed Planetary Gear Units[J]. 葛楠,張俊. Transactions of Tianjin University. 2008(01)
本文編號(hào)：2905064
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