Optimal design of superelastic lead rubber bearing (S-LRB) under cyclic loading employing various smart material
Year: 2025
Type: conference-paper
Abstract: This study investigates the influence of different type of shape memory alloys (SMAs) as smart material on the performance enhancement of superelastic lead rubber bearing (S-LRB), and further examines the various configurations impact on the design of S-LRB. For this, S-LRB has been developed by augmenting different types of SMA wire (NiTi, Fe-based, and Cu-based) with LRB, in different configurations (X, V, and W shaped). Through the finite element (FE) analysis in ABAQUS software, effect of different SMA materials and different configuration are evaluate on the force-displacement behaviour, re-centering ability, and energy dissipation capacity of S-LRB, over the LRB. Numerical results demonstrate that, the Fe-based SMA outperforms NiTi and Cu-based SMAs, in terms of the recentering capability and energy dissipation, and therefore making it the most effective choice for vibration control application. Among various SMA configurations, the W-shaped arrangement exhibits the highest energy dissipation and damping ratio, followed by the V-shaped and X-shaped configurations. These findings provide valuable insights into the selection of optimal SMA configurations for S-LRB isolator, facilitating the design of S-LRB system tailored for specific performance requirements.
Institution: Indian Institute of Technology Patna
Language: English
Subfield: Civil and Structural Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4413287465