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| Numerical analysis on corrugated sheet structure of shape memory alloy actuator based on UMAT |
| Received:July 09, 2018 Revised:October 28, 2018 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20180709004 |
| KeyWord:shape memory alloy UMAT corrugated sheet actuator numerical simulation |
| Author | Institution |
| 王志勇 |
中国石油大学华东 储运与建筑工程学院, 青岛 |
| 周博 |
中国石油大学华东 储运与建筑工程学院, 青岛 |
| 薛世峰 |
中国石油大学华东 储运与建筑工程学院, 青岛 |
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| Abstract: |
| The corrugated sheet structure of shape memory alloy (SMA) actuators has high efficiency and stable performance.So it has good prospects in the design of adaptive intelligent structures.In order to calculate and analyze the SMA structure using the finite element method,an incremental constitutive model of SMA is developed based on the existing constitutive models of SMA.A user material (UMAT) subroutine,which can be used in ABAQUS,is created according to the developed incremental constitutive model.The corrugated sheet structure of an SMA actuator is numerically simulated using the UMAT subroutine,and the validity of numerical results is verified by the comparison with the experimental results.In addition,a new structure of SMA short band for a corrugated sheet actuator is designed based on the original structure of SMA corrugated sheet actuator,and numerical analysis and verification are carried out.The temperature control scheme of the new structure and the measures to improve the driving effect are put forward,which can provide reference for the design and application of SMA corrugated sheet actuators. |
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