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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 鍾添東 | |
| dc.contributor.author | Yu-Ching Chang | en |
| dc.contributor.author | 張育菁 | zh_TW |
| dc.date.accessioned | 2021-06-17T07:01:14Z | - |
| dc.date.available | 2019-08-05 | |
| dc.date.copyright | 2019-08-05 | |
| dc.date.issued | 2019 | |
| dc.date.submitted | 2019-07-31 | |
| dc.identifier.citation | [1] Scooter S542 Yoga, “Portable Folding Electric Scooter”
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| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/72577 | - |
| dc.description.abstract | 本研究之目的為研究電動代步車傳動系統內部的齒輪參數化建模方法以及傳動系統與車體之各項結構分析，提出對於電動代步車傳動系統與車體的結構設計與改善策略，並開發一套結合AutoCAD繪圖軟體Visual Lisp 程式語言、Microsoft Excel試算表軟體、ANSYS有限元素分析軟體的參數化繪圖及參數化結構分析程式，以改良靜態結構特性。首先，對電動代步車傳動系統中的傘齒輪及螺旋齒輪對做彎曲應力分析，對傳動軸結構做靜態傳動分析，並對車體結構做各項耐久測試分析。並且針對傘齒輪、螺旋齒輪、傳動系統結構各零件做靈敏度分析，車體結構做最佳化分析。最後根據各項變數靈敏度分析以及最佳化分析的結果提出改良結構設計，比較原始及改良後的靜態結構特性，並顯示出改良後的電動代步車為較佳的結構設計。藉由本研究開發之工具及程式，從建模、應力分析到靈敏度分析的過程皆為自動化，簡化繁雜的參數設定過程，使改良設計過程更有效率。 | zh_TW |
| dc.description.abstract | This thesis studies the structural analysis and improvement design of an electric scooter structure with considering gear design parameters of the transmission system. A program integrating ANSYS, AutoCAD and Microsoft Excel is developed for automated structural modeling and finite element analysis. The analysis considered in this research includes stress analysis of bevel gear and helical gear, static analysis for the electric scooter transmission system structure, endurance analysis of electric scooter structure. The sensitivity analyses also applied to component parameters. The improvement design is proposed according to the results of sensitivity analysis and optimization analysis. Final, static characteristics of the original and improved electric scooter structures are compared, and it shows that the improved electric scooter is a better structural design. The whole process from modeling, stress analysis to sensitivity analysis is automated, and it has better result and efficiency. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-17T07:01:14Z (GMT). No. of bitstreams: 1 ntu-108-R05522628-1.pdf: 5258565 bytes, checksum: fdcc5138dcdb22b6701add10c9bc3bcd (MD5) Previous issue date: 2019 | en |
| dc.description.tableofcontents | 口試委員會審定書 i
致謝 ii 摘要 iii ABSTRACT iv CONTENTS v LIST OF FIGURES viii LIST OF TABLES xiii LIST OF SYMBOLS xvi Chapter 1 Introduction 1 1.1 Introduction to electric scooter 1 1.2 Literature review 3 1.3 Motivation and Purpose 8 1.4 Outline 8 Chapter 2 Basic theories of structural analysis 10 2.1 Finite element analysis 10 2.1.1 Concepts of finite element analysis 10 2.1.2 Finite element theory of the structural static displacement 12 2.1.3 Finite element theory of the structural stress 12 2.2 Equivalent drop theory 13 2.3 Sensitivity analysis 14 2.4 Geometry of gears 14 2.4.1 Geometry of helical gears 14 2.4.2 Geometry of bevel gears 16 2.4.3 Involute curve 19 2.5 Gear force transmission 19 2.5.1 Helical gears force 20 2.5.2 Straight bevel gears force 21 2.6 Bending Stress Equations 22 2.6.1 The Lewis bending equation 22 2.6.2 AGMA bending stress equation 23 2.6.2.1 Helical gear 23 2.6.2.2 Bevel gear 24 Chapter 3 Model construction and finite element analysis of gears 26 3.1 Gear model building process 26 3.1.1 Helical gear model building process 26 3.1.2 Bevel gear model building process 28 3.1.3 Integrated gear model building program 29 3.2 Finite element analysis and validation of spur gear 30 3.3 Finite element analysis and validation of helical gear 32 3.4 Finite element analysis and validation of bevel gear 34 Chapter 4 Model construction and finite element analysis of the transmission system and electric scooter 35 4.1 Finite element model construction 35 4.2 Transmission system structure analysis 38 4.2.1 Unit and material properties 39 4.2.2 Gear analysis 40 4.2.2.1 Gear force calculation 40 4.2.2.2 Helical gear stress analysis 42 4.2.2.3 Bevel gear stress analysis 44 4.2.3 Shaft stress analysis 47 4.2.4 Shell stress analysis 48 4.3 Endurance test analysis 51 4.3.1 Drop test 51 4.3.2 Double drum test 53 Chapter 5 Structural improvement 55 5.1 Structural improvement of the transmission system 56 5.1.1 Sensitivity analysis of transmission system structure 56 5.1.2 Comparison between the original and the improved transmission system structure 61 5.1.3 Integrated sensitivity analysis program 62 5.2 Structural improvement of the electric scooter 63 5.2.1 Comparison between the model with simplified transmission system and with complete transmission system 63 5.2.2 Structural optimization of the electric scooter 65 5.3 Comparison between the original and the improved transmission system and electric scooter structure 68 Chapter 6 Conclusion and suggestion 70 6.1 Conclusions 70 6.2 Suggestions 71 References 72 Appendix A: User manual of parametric modeling for gear program 77 Appendix B: The program for gear drafting 79 Appendix C: User manual of integrated sensitivity analysis program 81 | |
| dc.language.iso | en | |
| dc.subject | 電動代步車 | zh_TW |
| dc.subject | 傳動系統 | zh_TW |
| dc.subject | 有限元素分析 | zh_TW |
| dc.subject | 靈敏度分析 | zh_TW |
| dc.subject | 齒輪參數化建模 | zh_TW |
| dc.subject | Finite Element Analysis | en |
| dc.subject | Transmission System | en |
| dc.subject | Parametric Drafting of Gear | en |
| dc.subject | Sensitivity Analysis | en |
| dc.subject | Electric Scooter | en |
| dc.title | 考量傳動系統之電動代步車結構分析與改良設計 | zh_TW |
| dc.title | Structural Analysis and Improvement Design of An Electric Scooter with Transmission System | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 107-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 林陽泰,史建中 | |
| dc.subject.keyword | 電動代步車,傳動系統,有限元素分析,靈敏度分析,齒輪參數化建模, | zh_TW |
| dc.subject.keyword | Electric Scooter,Transmission System,Finite Element Analysis,Sensitivity Analysis,Parametric Drafting of Gear, | en |
| dc.relation.page | 83 | |
| dc.identifier.doi | 10.6342/NTU201902296 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2019-08-01 | |
| dc.contributor.author-college | 工學院 | zh_TW |
| dc.contributor.author-dept | 機械工程學研究所 | zh_TW |
| 顯示於系所單位： | 機械工程學系 | |
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