Triennial Report 2003 - CHARMEC

Parallel special projects – Parallella specialprojekt (SP) – Parallele Sonderprojekte – Projets spéciaux parallèlesSP1. LUCCHINI SWEDEN AB (bilateral agreement)Bilateral agreements have run since 1987 betweenLucchini Sweden (formerly Sura Traction, abb SuraTraction 1990-96, Adtranz Wheelset 1996-2000) andChalmers Applied Mechanics (formerly Chalmers SolidMechanics). Our personnel have assisted the companyin the design, testing and marketing of wheelsets. Onerecent activity is reported in the paper (where the secondauthor listed is an employee of Lucchini’s)Roger Lundén, Jürgen Schneider and Tore Vernersson: Newwheelsets for 25 and 30 tonne axle loads, Presented at 6. InternationaleSchienenfahrzeugtagung, Dresden (Germany) October2003, 6 ppParallel special projects – Parallella specialprojekt (SP) – Parallele Sonderprojekte – Projets spéciaux parallèlesSP2. NOISE FROM SWEDISH RAILWAYScharmec has been engaged in Banverket’s overall effortsto reduce the noise emitted from Swedish railways.Results from the projects vb4, eu2 and eu3 are beingexploited. The first meeting with charmec was held inGothenburg on 24 January 2002 with participants fromBanverket’s Head Office and Western Track Region.Parallel special projects – Parallella specialprojekt (SP) – Parallele Sonderprojekte – Projets spéciaux parallèlesSP3. TRACK FORCE MEASUREMENTS ON X2Instrumentation of non-powered X2 bogieas used during the track force measurementsin October 2002 (courtesy TrainTechEngineering Sweden)A new extensive test campaign with in-field measurementsof the track forces caused by the Swedish highspeedtrain x2 was commenced by TrainTech Engineeringand charmec. Meetings to discuss and plan the campaignwere held at TrainTech Engineering’s premises inStockholm on 13 December 2001 and on 21 February,21 March and 10 October 2002. Collaborating organizationsin the planning have been Banverket, BombardierTransportation, charmec, Ingemansson Technology,kth Railway Technology, Lucchini Sweden, TrainTechEngineering and TrainTech Test Centre. The cash andin-kind financing (about msek 3.0) came from Banverket,Lucchini Sweden, sj ab and charmec.The measurements were performed on 21-25 October2002 with a train of type x2 in which a bogie had beenequipped by TrainTech Test Centre with accelerometersand measuring wheels and with a data collection system.The train ran three times Stockholm – Göteborg – Stockholm,twice Stockholm – Malmö – Stockholm, and onceStockholm – Sundsvall – Stockholm. The aim was tocover the high-frequency range of the load spectrum(up to, say, 2000 Hz) where large contributions to peakloads may originate. charmec contributed with backgroundanalysis and calculations. Preliminary results ofthe measurements have been used to identify stretchesof track where maintenance is needed. The full data arepresently being evaluated by TrainTech Engineeringand Ingemansson Technology. A dynamic finite elementanalysis of a trailing x2 wheel and a parallel dynamicmeasurement have been performed by the latter company.58