A new material for seismic application: SMA metallic pseudo-rubber

作者：Mao Chenxi^*; Li Suchao; Zhao Yagebai; Ou Jinping

来源：China Civil Engineering Journal, 2010, 43(SUPPL. 2): 176-181.

• Civil infrastructures
• Compression loading
• Isolation
• Mechanical behavior
• Metallic pseudo-rubber
• New material
• Potential materials
• Processing technologies
• Residual deformation
• Seismic application
• Seismic isolator
• Self-recovery
• Shape memory alloy
• Sinusoidal load
• Stress-strain behaviors
• Test machine

To develop novel isolators with self buffer and with residual deformation self-recovery ability, a new type of material, shape memory alloy metallic pseudo-rubber (SMA-MPR), was fabricated and investigated in this study. Mechanical behavior of this material was investigated, together with its deformation self-recovery ability. To address if various processing technologies of SMA-MPR have great influence on their deformation self-recovery ability, three types of SMA-MPR specimens were fabricated. Mechanical behavior of the SMA-MPR specimens under cyclic sinusoidal compression loadings with various frequencies were test. Then, three types of SMA-MPR specimens with residual deformation were put into a temperature controlled stove and their deformation recovery ability were tested. To address if these SMA-MPR specimens still have stable mechanical properties after deformation recovery, they were installed in the test machine. Their stress-strain behavior under cyclic sinusoidal loads were tested again. Experimental results indicated that SMA-MPR is good potential material to develop novel seismic isolators for civil infrastructures.

• 出版日期2010
• 单位中国地震局; 东北林业大学