Journals / Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi / 2020 / Cilt: 26 - Sayı: 1

Investigation of dynamic motions and vibration reduction methods in railway vehicles

Raylı taşıtlarda dinamik hareketler ve titreşim azaltma yöntemlerinin incelenmesi

Pages
9–20
Publication Date
2020-02-20
DOI
—
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AI Summary & Key Takeaways

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

It is concluded that the most effective method for reducing vibration was active systems but is not feasible in practice.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Rail transportation is remaining its importance day by day because it is safe and convenient to carry more people and goods.
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Key Findings & Data:With the demand for rail vehicles, expectations have increased especially in terms of comfort and speed, so the studies have been accelerated on the dynamic effects on rail vehicles to be a solution.
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Conclusion & Impact:It is concluded that the most effective method for reducing vibration was active systems but is not feasible in practice.
🔬Design:Review & Systematic Survey
📍Scope:Comprehensive Sample
⚙️Variables:Raylı taşıtlar · Süspansiyon sistemleri · Titreşim

Abstract

Rail transportation is remaining its importance day by day because it is safe and convenient to carry more people and goods. With the demand for rail vehicles, expectations have increased especially in terms of comfort and speed, so the studies have been accelerated on the dynamic effects on rail vehicles to be a solution. Vibrations resulting vertical and lateral dynamic movements cannot supply the expected level in terms of vehicle safety, handling and comfort at high speeds. In the studies focused on suspension systems for reducing the dynamic effects, active and semi-active suspension technologies, which contain a control mechanism in place of conventional passive systems, have come to the forefront. In addition to passive elements, in the active suspension systems actuators and controllers are added to the system, while in semi-active suspension systems, it is tried to find a solution by controlling only the damping element without adding the actuator to the system. Another method that is developed to reduce vibration is the optimization of suspension systems. In this review, the dynamic motions in rail vehicles, methods of modeling and rood inputs are examined and the effect of active, semi-active system and optimization methods on reducing vehicle vibrations are discussed. It is concluded that the most effective method for reducing vibration was active systems but is not feasible in practice. In the present study, it is aimed to guide the future researchers who will practice on modeling and reducing the vibrations of railway vehicles.

Özet

Demiryolu ulaşımı güvenli oluşu, daha fazla kişi ve eşya taşımaya uygunluğu sebebiyle önemini her geçen gün arttırmaktadır. Raylı taşıtlara olan talep ile konfor ve hız anlamında bu araçlardan beklentiler artmış olup, çözüm için raylı taşıtlardaki dinamik etkiler üzerinde çalışmalar hızlandırılmıştır. Düşey ve yanal dinamik hareketler sonucu oluşan titreşimler araç güvenliği, yol tutuş ve konfor açısından yüksek hızlarda beklenen seviyeyi karşılamayabilmektedir. Dinamik etkilerin azaltılması için süspansiyon sistemleri üzerine yoğunlaşılan çalışmalarda geleneksel pasif sistemlerinin yerine, yapısında bir kontrol mekanizması da içeren aktif ve yarı aktif süspansiyon teknolojileri ön plana çıkmıştır. Aktif süspansiyon sistemlerinde mevcut pasif elemanlara ek olarak sisteme bir eyleyici ve kontrolcü eklenirken, yarı aktif süspansiyon sistemlerinde ise eyleyici olmadan sadece sönümleme elemanı üzerinden kontrol sağlanarak çözüm üretilmeye çalışılmıştır. Titreşim azaltmak için geliştirilen bir diğer yöntem süspansiyon sistemlerinin optimizasyonudur. Bu derlemede raylı taşıtlardaki dinamik hareketler, modelleme metotları ve yol girdileri incelenmiş olup aktif, yarı aktif sistem ve optimizasyon yöntemlerinin araç titreşimlerinin azaltılmasındaki etkileri ele alınmıştır. Titreşimin azaltılmasında en etkili yöntemin aktif sistemler olduğu ancak uygulamada makul sonuçlar alınamadığı belirlenmiştir. Bu çalışmada, demiryolu taşıtlarını modelleme ve oluşan titreşimleri azaltma konularında çalışacak gelecekteki araştırmacılara yol göstermesi amaçlanmıştır.

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Cite This Article

BAYRAKTAR, M., TAHTALI, M. (2020). Investigation of dynamic motions and vibration reduction methods in railway vehicles. Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi, Cilt: 26 - Sayı: 1, 9–20. https://ajindex.com/articles/108853

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