Crash Analysis of an amphibious bus according to the ECE R66 regulations

Simulation by order of a bus rollover scenario with LS-DYNA®

Task

The rollover scenario of an amphibious bus according to the ECE.R66 formalities of the UNECE (United Nations Economic Commission for Europe) was investigated. Compliance with the criteria stipulated in the ECE R66 regulations is required for buses to operate on the public roads. In particular, penetrations into the passengers’ survival space is not allowed according to the regulations.

Crash Analysis of an amphibious bus according to the ECE R66 regulations

Solution

The bus rollover was simulated using LS-DYNA software and then reviewed by the RDW (Rijksdienst voor het Wegverkeer -- Dutch Vehicle Authority ) in the Netherlands. In cooperation with the customer, various design variants were analyzed based on the results of the simulations until compliance with the ECE.R66 regulations was achieved. In cooperation with the customer's design and engineering teams, the results of simulations were presented to the RDW and all questions were answered in detail to obtain the certification according to the ECE R66 regulations.

Customer Benefit

The number of physical tests necessary to prove the concept was significantly reduced by performing the simulations for the bus rollover. The approval was granted by the RDW on the basis of the results obtained from the simulations. No additional physical tests were needed for obtaining the required certifications.

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