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2020 Fiscal Year Final Research Report

Realization of high precision and high reliability design of traction drive by development of simulation of rolling contact fatigue strength

Research Project

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Project/Area Number 18H01357
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 18040:Machine elements and tribology-related
Research InstitutionMuroran Institute of Technology

Principal Investigator

Narita Yukihito  室蘭工業大学, 大学院工学研究科, 准教授 (90431519)

Co-Investigator(Kenkyū-buntansha) 藤井 正浩  岡山大学, 自然科学研究科, 教授 (80209014)
風間 俊治  室蘭工業大学, 大学院工学研究科, 教授 (20211154)
増山 知也  小山工業高等専門学校, 機械工学科, 教授 (80282094)
長船 康裕  室蘭工業大学, 大学院工学研究科, 講師 (30241409)
Project Period (FY) 2018-04-01 – 2021-03-31
Keywords機械要素 / トラクションドライブ / 疲労強度
Outline of Final Research Achievements

A simulation of the rolling contact fatigue strength of a traction drive was proposed. The simulation also can predict the scatter of fatigue strength by considering the distribution of sizes of inclusions in the element material. The calculated fatigue strength and its standard deviation was about equal to the experimental result. Furthermore, the calculated results were about equal to the experiment by changing the cleanliness of material and the curvature radius of test roller. As a result, the influence of inclusions on the rolling contact fatigue strength of a traction drive and the effectiveness of proposed simulation have become clear.

Free Research Field

設計工学・機械機能要素・トライボロジー

Academic Significance and Societal Importance of the Research Achievements

トラクションドライブの転がり疲労強度に関する研究は実験に基づく評価が中心であり,個々の設計事例に対して多数個の疲労試験が必要であった.それに対して,損傷メカニズムに基づいて転がり疲労強度を予測する本手法は,強度のばらつきの予測に加えて,材料やローラ諸元の変更にも対応可能である.トラクションドライブは電気自動車に適する減速機の構成要素として期待されており,本研究の発展によって,その研究開発効率の向上と信頼性の高い装置設計が期待できる.

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Published: 2022-01-27  

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