SMA耗能器的阻尼性能试验研究

设计并制作了伸缩式形状记忆合金耗能阻尼器，并对此器件进行了试验研究。试验结果与理论分析结果吻合程度较好，表明器件的设计是合理的、加工制作的工艺满足了理论要求，为该器件的工程实际应用积累了实践经验。

Experimental Study of Damping Capacity of SMA Energy Dissipation Damper

In this paper, the shape memory alloy stretch and draw type energy dissipation damper (short as SMA-SDTEDD) has been designed and made. It is acquired that the experimental damping effect is distinct very much. The analysis indicats that (1) SMA-SDTEDD is distinctly provides with the damp capacity, the max value of the average equivalent viscidity damp ratio can reach 33.56%, the minimum value is 14%, which meets the needs of the control of structural vibration caused by passive energy-consuming. (2) The damp capacity of SMA-SDTEDD has something to do with the load frequency. The damp capacity is better in lower frequency, but descends gradually when the load frequency is increased. (3) The damp capacity has something to do with the maximum value of stretch and draw of SMA-SDTEDD. The average equivalent viscidity damp ratio becomes less when the maximum value of stretch and draw is too much or too littler and when the maximum value of stretch and draw is 1/2 of extreme value the maximum equivalent viscidity damp ratio is acquired. (4) The stress-strain curve of SMA-SDTEDD shows its excursion upwards when it is loaded again and again, which agrees with the experimental result that other scholars have done with SMA material test.(5) The test result agrees with the result of the theoretical analyze.Therefore a better experimental foundation is laid for further based on experimental results and analyzed conclusion.