Projects

LogoMotive prepared the overall vehicle concept taking into account the boundary conditions and customer requirements, followed by the interdisciplinary development work (design, simulations, verifi cations). Furthermore we defi ned the interfaces, components and loadings. The output included the 3D CAD models, the drawings, the purchase and the test specifi cations – and the evidence documents for dynamics, strength and crashworthiness.

The entire scope of work comprised the complete design, the interface clarification and the 3D CAD modeling up to the preparation of drawings with bill of materials and purchase specifications. Further the detailed strength and crash analysis was performed as well as acoustic calculations including the definition of noise reduction measures.

The concept design up to the detailed design work of the bogie development was part of the entire work scope as well as the interface specification, the 3D CAD modeling of the bogie frame including all brackets and the assembled components, the dimensioning of all structures in terms of strength and the preparation of drawings with bill of materials and purchase specifications. Further services were the evaluation of the load cases, the specification of the bogie frame fatigue test and dynamic simulations of the complete vehicle.

The development work comprised the concept design and 3D modeling, preparing the drawings in a close cooperation with the strength, crashworthiness and dynamic experts taking into account all customer requirements, the requirements of the interiors and the electrical units as well as the manufacturing requirements.

Our analysis of the status, the definition of measures to meet the vehicle noise requirements, our noise prediction calculations as well as our acoustic component specifications, led together with our homologation support to the successful homologation.

We prepared the load assumptions based on standards and the results of the multi-body-simulation. Thereby we compiled the evidence document of the bogie structure including the evaluation of the welding requirements and joining bolts.

Our in house experts prepared the crashworthiness concept for the train, the design of the crash elements as well as the modeling, the crash simulation and the evaluation of the complete vehicle. The technical details were discussed and decided together with the component suppliers as well as the vehicle manufacturing specialists.

On the basis of the operator’s requirements we dimensioned the vehicle regarding the system behavior, the vehicle gauge requirements as well as the loads and optimized on one hand the vehicle and on the other hand the requirements. Further we investigated the drive and gearbox layout so as to reduce the drive vibrations.

For the verification of the performed sound prognosis of a high floor tram car measurements of the outer sound level were accomplished. Compared to the calculated sound values the measurements showed deviations. To eliminate the deviations sound reduction measures were proposed.

For the homologation of the driving technique of a locomotive by the German authority Eisenbahn-Bundesamt it is necessary to proof in a physical test the safety against derailment in track distortions. For a locomotive forseen to be put into service for passanger trains we performed a distortion test. This physical test has demonstrated that the safety against derailment is given.