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Application of an Effective SIMP Method with Filtering for Topology Optimization of Motorcycle Tubular Frame


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DOI: https://doi.org/10.15866/ireme.v11i11.13770

Abstract


The complexity of optimal design of the motorcycle tubular frame is due to the conflicting nature of various main design criteria, namely, reduction in the frame mass, increase in torsional stiffness, restriction of bending stiffness and minimization of maximum structural stress. Frame optimization is achieved when different kinds of decision parameters are involved: discrete (e.g. standardized tube diameters available on the market) and continuous (e.g. angles and fillets). Nowadays, optimal design of motorcycle tubular frames still appears to be the result of engineers’ creativity and experience, as well as of further suggestions by test drivers. In the design workflow of tubular motorcycle frames Topology Optimization (TO) technique it is not a well-established practice. Thus, this paper aims to discuss the applicability of Solid Isotropic Material with Penalization (SIMP) method with filtering as it is likely to perform an effective topology optimization of motorcycle tubular frames. After tubular frame 3d acquisition, effective design domain was defined and topology optimization of a multi-load case was implemented in a commercial software. The case study of the “DUCATI 600SS” frame, consisting of three different cross-section tubes in chrome-molybdenum alloy steel, where the motor performs the stiffening function, provides the results to support the methodology by validating it with experimental data.
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Keywords


Design Method; 3d Acquisition; Tube Bending and Torsion; Multibody Numerical Simulations; Cross-Section Tubes

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References


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