Shape optimization of SMA structures with respect to fatigue
This paper presents an efficient structural optimization approach for shape memory alloys (SMAs) with respect to fatigue. In the proposed method, a nonparametric shape optimization approach based on optimality criteria is applied to change the structural configuration. The design optimization framew...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2020-04-01
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| Series: | Materials & Design |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127519308949 |
| _version_ | 1818899178715086848 |
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| author | Xiaojun Gu Yinfeng Cao Jihong Zhu Jun Wang Weihong Zhang Ziad Moumni |
| author_facet | Xiaojun Gu Yinfeng Cao Jihong Zhu Jun Wang Weihong Zhang Ziad Moumni |
| author_sort | Xiaojun Gu |
| collection | DOAJ |
| description | This paper presents an efficient structural optimization approach for shape memory alloys (SMAs) with respect to fatigue. In the proposed method, a nonparametric shape optimization approach based on optimality criteria is applied to change the structural configuration. The design optimization framework is accomplished by relying on commercially available software and tools. In addition, both low- and high-cycle fatigue criteria are used to compute the fatigue factor at each material point, indicating its degree of safeness with respect to fatigue. Meanwhile, a 3D constitutive model is utilized to predict, with good accuracy, the stabilized thermomechanical stress state of a SMA structure subjected to multiaxial nonproportional cyclic loading. Finally, numerical examples are tested to demonstrate the effectiveness of the proposed method. Keywords: Shape memory alloys, Fatigue, Structural optimization |
| first_indexed | 2024-12-19T19:43:50Z |
| format | Article |
| id | doaj.art-a5582e2d930f42aaa61b7b5a4a0f1191 |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-12-19T19:43:50Z |
| publishDate | 2020-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-a5582e2d930f42aaa61b7b5a4a0f11912022-12-21T20:08:12ZengElsevierMaterials & Design0264-12752020-04-01189Shape optimization of SMA structures with respect to fatigueXiaojun Gu0Yinfeng Cao1Jihong Zhu2Jun Wang3Weihong Zhang4Ziad Moumni5Unmanned System Research Institute, Northwestern Polytechnical University, 710072 Xi’an, China; State IJR Center of Aerospace Design and Additive Manufacturing, Northwestern Polytechnical University, Xi’an 710072, ChinaState IJR Center of Aerospace Design and Additive Manufacturing, Northwestern Polytechnical University, Xi’an 710072, ChinaState IJR Center of Aerospace Design and Additive Manufacturing, Northwestern Polytechnical University, Xi’an 710072, China; Corresponding author.Unmanned System Research Institute, Northwestern Polytechnical University, 710072 Xi’an, China; State IJR Center of Aerospace Design and Additive Manufacturing, Northwestern Polytechnical University, Xi’an 710072, ChinaState IJR Center of Aerospace Design and Additive Manufacturing, Northwestern Polytechnical University, Xi’an 710072, ChinaIMSIA, ENSTA-Paris, CNRS, CEA, EDF, Institut Polytechnique de Paris, 91120 Palaiseau, France; State IJR Center of Aerospace Design and Additive Manufacturing, Northwestern Polytechnical University, Xi’an 710072, ChinaThis paper presents an efficient structural optimization approach for shape memory alloys (SMAs) with respect to fatigue. In the proposed method, a nonparametric shape optimization approach based on optimality criteria is applied to change the structural configuration. The design optimization framework is accomplished by relying on commercially available software and tools. In addition, both low- and high-cycle fatigue criteria are used to compute the fatigue factor at each material point, indicating its degree of safeness with respect to fatigue. Meanwhile, a 3D constitutive model is utilized to predict, with good accuracy, the stabilized thermomechanical stress state of a SMA structure subjected to multiaxial nonproportional cyclic loading. Finally, numerical examples are tested to demonstrate the effectiveness of the proposed method. Keywords: Shape memory alloys, Fatigue, Structural optimizationhttp://www.sciencedirect.com/science/article/pii/S0264127519308949 |
| spellingShingle | Xiaojun Gu Yinfeng Cao Jihong Zhu Jun Wang Weihong Zhang Ziad Moumni Shape optimization of SMA structures with respect to fatigue Materials & Design |
| title | Shape optimization of SMA structures with respect to fatigue |
| title_full | Shape optimization of SMA structures with respect to fatigue |
| title_fullStr | Shape optimization of SMA structures with respect to fatigue |
| title_full_unstemmed | Shape optimization of SMA structures with respect to fatigue |
| title_short | Shape optimization of SMA structures with respect to fatigue |
| title_sort | shape optimization of sma structures with respect to fatigue |
| url | http://www.sciencedirect.com/science/article/pii/S0264127519308949 |
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