VIBRATION REDUCTION BY TUNED MASS DAMPERS INSIDE CAVITIES OF TOPOLOGY OPTIMIZED LATTICE STRUCTURES

Abstract Tuned mass dampers may be used to improve vibrational behavior of structures. However, they require space move. This paper presents an approach incorporate tuned into a lightweight-optimized structure without extra requirement. It is based on (1) topology optimization (TopOpt) with unit cells and (2) vibration reduction multiple (m-TMD) within the cells. The performed physics-informed penalty factor, unique chosen cell. Subsequently, weight optimal density distribution realized by populating design domain ten different densities. To reduce induced vibration, m-TMDs are placed inside cavities in grey scale regions. effectiveness demonstrated for 2-segment robot arm. resulting cell robotic arm (UC-Arm) 3.6% lighter than reference model, maintains same static performance, shows 60% smaller dynamic displacement observed frequency range. No required motion m-TMD.