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مقالات فارسیISIکنفرانسهاژورنالها

Evaluation of Sperling’s Index in Passenger and Freight Trains Under Different Speeds and Track Irregularities

محل انتشار: مجله بین المللی طراحی پیشرفته و تکنولوژی ساخت، دوره: 15، شماره: 4
سال انتشار: 1401
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 111

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لینک ثابت به این مقاله:
https://civilica.com/doc/1662415

شناسه ملی سند علمی:

JR_ADMTL-15-4_008

تاریخ نمایه سازی: 2 خرداد 1402

چکیده مقاله:

The two factors of track irregularity and train speed affect the dynamic behavior of rail vehicles and can lead to an increase in dynamic forces, a decrease in ride comfort, and derailment in some cases. In this paper, the effect of train speed increase and different conditions of track irregularity on ride comfort and ride quality are investigated. For this purpose, first, two freight and passenger train models have been modeled in UM software, and then the effect of train speed increase and track irregularities (different US federal classes) have been studied with Sperling’s index. A freight train with the model of ۱۸-۱۰۰ and ۳-piece bogie and a TGV high-speed train with ۱۰ wagons were simulated. The results showed that in Sperling’s index, with the increase in the train speed and irregularity amplitude, the value of ride comfort and ride quality generally increased. For example, in the passenger train and irregularity classes ۵ and ۴, with the increase in train speed from ۱۰ to ۱۰۰ m/s, the Sperling’s index values changed from ۰.۶۶ to ۱.۹۹ and from ۰.۷۸ to ۲.۲۵, and increased ۲۰۰% and ۱۸۸%, respectively. In other words, at a speed of ۱۰ m/s, passengers' comfort is just noticeable, while at a speed of ۱۰۰ m/s and class ۴, the situation is more pronounced but not unpleasant and the system should be monitored.

کلیدواژه ها:

numerical simulation ، Railway vehicles ، Ride comfort ، Ride quality ، Sperling’s index ، Track irregularities

نویسندگان

sajjad sattari

Department of Mechanical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran

Mohammad Saadat

Department of Mechanical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran

Sayed Hasan Mirtalaie

Department of Mechanical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran

mahdi salehi

Department of Mechanical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran

ali soleimani

Department of Mechanical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran

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