Overview

"Rassmatrivaetsya dinamika razvitiya ploskogo defekta (polzuna) na poverkhnosti kataniya vagonnogo kolesa. Naydeno znachenie kriticheskoy skorosti poezda, pri kotoroy perednyaya kromka otryvaetsya ot rel'sa, i koleso na mgnovenie ""zavisaet"" nad rel'som. Pokazano, chto pri skorosti poezda, men'shey kriticheskoy, est' granitsa po glubine polzuna, nizhe kotoroy polzun ""zakatyvaetsya"", a vyshe - razvivaetsya, to est' razmery polzuna rastut vsledstvie plasticheskoy deformatsii pri udare kolesa ploskost'yu polzuna o rel's. Pri skorosti, bol'shey kriticheskoy, posle otryva koleso udaryaetsya o rel's zadney kromkoy polzuna. Proiskhodit ""zakatyvanie"" polzuna, a koleso priobretaet oval'nuyu formu. Provedena otsenka vliyaniya polzuna na velichinu sily reaktsii rel'sa pri vstreche s polzunom. Na baze razrabotannoy metodiki prognozirovaniya razvitiya polzuna vo vremya dvizheniya sostava dany rekomendatsii, pozvolyayushchie prodlit' srok sluzhby defektnoy kolesnoy pary i utochnit' moment prinyatiya resheniya o snyatii ee s ekspluatatsii. Kniga prednaznachena dlya spetsialistov-ekspluatatsionnikov podvizhnogo sostava, a takzhe dlya prepodavateley i aspirantov vuzov, rabotayushchikh v oblasti dinamiki i ustoychivosti zheleznodorozhnykh ekipazhey."

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