PSI - Issue 47

Bartłomiej Walczak et al. / Procedia Structural Integrity 47 (2023) 723 – 731 Bart ł omiej Walczak et al./ Structural Integrity Procedia 00 (2019) 000 – 000

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Fig. 3. The layout of main powertrain elements on Solaris Urbino 15LE electric.

2. Numerical and experimental analysis 2.1. Pretest simulations

As a basis for selecting the most stressed areas of the superstructure, four load cases were selected. Among them were emergency breaking, cornering, driving through bump and frame twists. FEA was done using Simcenter Nastran Software. Fig. 4. presents results envelope from which the critical areas were chosen. In the case of this design, the greatest stresses accumulated in the chassis, right wall, and roof.

Fig. 4. Results of pretest simulations.

2.2. Measurement points The measurement plan included recording signals from strain gauges, accelerometers, and linear displacement sensors. All tests were also recorded by a camera placed on the windshield. Signals from the drivetrain and tachograph were recorded via the Controller Area Network (CAN).