Redesign of Adapted Crossmember

Sammanfattning: This thesis aims to address the incompatibility issues between Scania's 600 mm silencers and the second position 2 o'clock PTO adapted crossmember, by exploring redesign possibilities. The goal is to enable the co-mounting of these components, expanding customization options and enhancing Scania's modularization capabilities. The research investigates various design constraints and parameters associated with the crossmember were gathered in a QFD, and compares the structural rigidity and manufacturing processes of new crossmember concepts to Scania's standard crossmember. The evaluation of concepts is conducted using a Pugh's matrix analysis, which allows for performance assessment and comparison. The investigation reveals that two concepts, namely the Z-beam and trusses-based designs, show the most promise. The Z-beam can be manufactured using either sheet metal or casting methods, while the trusses concept can be realized through laser cutting or CNC machining. Both concepts demonstrate comparable structural rigidity to the current adapted and standard crossmembers. They exhibit good stress distribution, possess potential for further weight reduction, and importantly, are compatible with Scania's modularization system. Additionally, these concepts can effectively accommodate a 2 o'clock PTO and the 600 mm silencers, resolving the incompatibility issue.