Abstract
Keywords:
Rubber engine mount, Topology optimization, Reliability-based design, Probabilistic constraint
Abstract
A reliability-based topology optimization approach considering the static and dynamic behaviors of rubber is proposed for the shape design of rubber vibration isolators. The probabilistic constraint is formulated with performance measurement approach (PMA) considering the variances of the mechanical properties of rubber. The corresponding probability and design sensitivity analyses of probabilistic constraint are performed using the advanced first-order second moment (AFOSM) method. The optimization formulation considering both the high structural stability and low transmissibility is proposed. The sequentially linear programming widely used in the structural design is selected as an optimization algorithm. The design result shows the larger reliability against the variance compared with the deterministic design results.