![]() ![]() In order to measure the crashworthiness of the EMU, we then developed a full CAD model of the front two carriages to assess the impact performance of a number of scenarios set by the standard. We then simulated various collisions, and established very good agreement between the trials and our modelling. To validate these tests, Frazer-Nash used finite element modelling in LS-DYNA to replicate the actual trial conditions achieved. ![]() In this instance, Rotem assessed their EMU by commissioning a range of full scale impact trials, examining both the performance of the energy absorbing components in isolation, and the full cab and intermediate vehicle ends. This specification defines the design limits and driver survival space which must be met for potential crash scenarios: both head-on impact with an identical train, and impact with a large obstacle (e.g at a level crossing).įrazer-Nash Consultancy were commissioned to perform non-linear finite element analysis of the new EMU design, in order to demonstrate that it met these requirements.Ī key requirement of the BS standard is that the modelling methods used to perform the initial assessment must be validated against component trials. The Hyundai Rotem Company (Rotem) was developing a new lightweight, aluminium bodied electric multiple unit (EMU) – a passenger train consisting of more than one carriages which uses electricity as the sole motive power.Īs part of the process, Rotem required independent verification of the EMU’s compliance with the BS EN 15227 crashworthiness standard. ![]()
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January 2023
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