| 王志勇,周博,薛世峰.基于UMAT的形状记忆合金驱动波纹板结构的数值分析[J].计算力学学报,2019,36(3):370~374 |
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| 基于UMAT的形状记忆合金驱动波纹板结构的数值分析 |
| Numerical analysis on corrugated sheet structure of shape memory alloy actuator based on UMAT |
| 投稿时间：2018-07-09 修订日期：2018-10-28 |
| DOI：10.7511/jslx20180709004 |
| 中文关键词: 形状记忆合金 UMAT 波纹板 驱动器 数值模拟 |
| 英文关键词:shape memory alloy UMAT corrugated sheet actuator numerical simulation |
| 基金项目:国家重点研发计划（2017YFC0307604）资助项目. |
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| 中文摘要: |
| 形状记忆合金SMA主动驱动波纹板效率高，且性能稳定，在设计自适应智能结构上具有可观的前景。为有效利用有限元法对SMA波纹板结构进行计算分析，基于已有SMA本构模型推导了增量型SMA本构模型，据此编写了可由ABAQUS调用的用户材料（UMAT）子程序；利用该UMAT子程序对SMA主动驱动波纹板结构进行了数值模拟计算，与实验结果的对比验证了计算结果的有效性；在SMA波纹板原始结构基础上，提出了SMA短带错落布置型新结构，并进行了数值模拟分析与验证；提出了新结构的温度控制方案和提高驱动效果的措施，可为SMA驱动波纹板驱动器的设计与应用提供参考与借鉴。 |
| 英文摘要: |
| 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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