Topology optimization for vibration suppression at multiple locations: A non-iterative approach

• Published in: Applied mathematics and computation 2021-06, Vol.398, p.125990, Article 125990
• Main Author: Wang, Jiqiang
• Format: Article
• Language: English
• Subjects: Multiple locations; Non-iterative approach; Vibration suppression
• ISSN: 0096-3003; 1873-5649
• DOI: 10.1016/j.amc.2021.125990

•Feasibility of performance for requirement of vibration attenuation at multiple locations is addressed.•Best achievable performance or performance limit is obtained.•Relaxation of performance specification for feasible solutions is explored.•Clear-cut solution to “often-confusing” problem of performance compromise for vibrations at multiple locations is obtained. Optimization algorithms have been routinely utilized for topology optimization for vibration suppression. It is quite often necessitated that vibration needs to be suppressed at multiple locations. For this problem, conventional optimization-based approaches can be time-consuming for seeking optimal solutions resulting in iterative procedures. This is true particularly for addressing those fundamental problems such as feasibility of performance specification, performance limit, seeking sub-optimal solutions, and determining compromisability of performance at multiple locations etc. In this paper, a novel approach is proposed where all these problems can be tackled without iterative trials-and-errors. Clear-cut answers can be obtained solely based on visual inspections. As a consequence, a new design methodology is established whose powerfulness is demonstrated through its application to vehicle suspension structures.