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Journals / Demiryolu Mühendisliği / 2021 / Cilt: 0 - Sayı: 14

Wheel Rail Interaction; a Finite Element Analysis on Fatigue Failure Resistance of Pearlitic and Bainitic Steels

Tekerlek Ray Etkileşimi; Perlitik ve Beynitik Çeliklerin Yorulma Hasar Direnci ÜzerineBir Sonlu Elemanlar Analizi

Yasin SARIKAVAK
Pages
65–76
Publication Date
2022-10-12
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

In conclusion, analyzed bainitic microstructure shows advanced fatigue characteristics thanpearlitic microstructure with ten million cycle resistance under 386.9 MPa load.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:In this study, pearlitic microstructure steels, which are frequently used in the operationalconditions of railways, and alternatively developed, bainitic microstructure steels, that has advancedmechanical properties are investigated.
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Key Findings & Data:Conventional and advanced rail grades were investigated in termsof chemical composition and mechanical properties with an extended literature review.
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Conclusion & Impact:In conclusion, analyzed bainitic microstructure shows advanced fatigue characteristics thanpearlitic microstructure with ten million cycle resistance under 386.9 MPa load.
🔬Design:Review & Systematic Survey
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

In this study, pearlitic microstructure steels, which are frequently used in the operationalconditions of railways, and alternatively developed, bainitic microstructure steels, that has advancedmechanical properties are investigated. Conventional and advanced rail grades were investigated in termsof chemical composition and mechanical properties with an extended literature review. In addition, bainiticrail steels developed in different regions and countries were analyzed. Fatigue failure resistance of railswere analyzed with finite element method considering wheel-rail interaction, friction parameters andcontact regions. In conclusion, analyzed bainitic microstructure shows advanced fatigue characteristics thanpearlitic microstructure with ten million cycle resistance under 386.9 MPa load.

Özet

Bu çalışmada ülkemizde ve dünyada demiryolu hatlarında işletme şartlarında çoğunlukla kullanımda olan perlitik mikroyapıdaki çelikler ve perlitik çeliklere alternatif olarak sunulan, gelişmiş mekanik özelliklere sahip olan beynitik mikroyapıdaki çelikler ele alınmıştır. Geniş bir literatür özetiyle konvansiyonel ray sınıfları ve gelişmiş ray sınıfları, kimyasal kompozisyonları ve temel mekanik özellikleri dikkate alınarak değerlendirilmiştir. Ayrıca dünyada farklı bölge ve ülkelerde geliştirilen beynitik ray çelikleri incelenmiştir. Daha sonra tekerlek ray etkileşimi, sürtünme şartları ve temas yüzeyleri dikkate alınarak, geliştirilen sonlu elemanlar modelinde rayın yorulma hasar direnci analiz edilmiştir. Sonuç olarak analiz edilen beynitik mikroyapıdaki çeliğin yorulma hasar direncinin perlitik mikroyapıya göre üstün olduğu ve 386,69 MPa yük altında on milyon çevrime dayanabildiği anlaşılmıştır.

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Cite This Article

SARIKAVAK, Y. (2022). Wheel Rail Interaction; a Finite Element Analysis on Fatigue Failure Resistance of Pearlitic and Bainitic Steels. Demiryolu Mühendisliği, Cilt: 0 - Sayı: 14, 65–76. https://ajindex.com/articles/487085

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