Effect of the curvature of the cross-section on buckling characteristics of convex-tape-shaped Cu-Al-Mn shape memory alloy elements
When an elongated columnar shape memory alloy (SMA) element buckles, in some cases it exhibits negative stiffness. This post-buckling negative stiffness can be repeatedly used as SMAs can recover their shape. This property has potential application to passive vibration isolation devices. A previous...
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The Japan Society of Mechanical Engineers
2024-07-01
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| Series: | Mechanical Engineering Journal |
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| Online Access: | https://www.jstage.jst.go.jp/article/mej/11/6/11_24-00131/_pdf/-char/en |
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| _version_ | 1846118051713384448 |
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| author | Shuto NAKASHIMA Hiroki CHO Takumi SASAKI Sumio KISE |
| author_facet | Shuto NAKASHIMA Hiroki CHO Takumi SASAKI Sumio KISE |
| author_sort | Shuto NAKASHIMA |
| collection | DOAJ |
| description | When an elongated columnar shape memory alloy (SMA) element buckles, in some cases it exhibits negative stiffness. This post-buckling negative stiffness can be repeatedly used as SMAs can recover their shape. This property has potential application to passive vibration isolation devices. A previous study on the behavior of convex-tape-shaped Ti-Ni SMA elements found that their properties are superior to those of normal flat-tape-shaped SMA elements. However, a Ti-Ni SMA has a high dependence on environmental temperature. Therefore, this study investigates the effect of cross-sectional curvature on the buckling characteristics of convex-tape-shaped Cu-Al-Mn SMA elements, whose shape memory and mechanical properties are less dependent on environmental temperature than those of a Ti-Ni SMA, using the three-dimensional finite element method and a buckling test. The results show that the post-buckling negative stiffness increases with increasing cross-sectional curvature. This tendency is similar to that for a Ti-Ni SMA, indicating that the buckling characteristics of a Cu-Al-Mn SMA can be designed using methods for a Ti-Ni SMA. Moreover, the lower temperature dependence of a Cu-Al-Mn SMA compared to that of a Ti-Ni SMA makes a Cu-Al-Mn SMA more suitable as a material for vibration isolators. |
| format | Article |
| id | doaj-art-f9509f69112b4e9b945b5b19596c6b70 |
| institution | Kabale University |
| issn | 2187-9745 |
| language | English |
| publishDate | 2024-07-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Mechanical Engineering Journal |
| spelling | doaj-art-f9509f69112b4e9b945b5b19596c6b702024-12-18T08:34:16ZengThe Japan Society of Mechanical EngineersMechanical Engineering Journal2187-97452024-07-0111624-0013124-0013110.1299/mej.24-00131mejEffect of the curvature of the cross-section on buckling characteristics of convex-tape-shaped Cu-Al-Mn shape memory alloy elementsShuto NAKASHIMA0Hiroki CHO1Takumi SASAKI2Sumio KISE3Faculty of Environment Engineering, graduate student at The University of KitakyushuFaculty of Environment Engineering, The University of KitakyushuFaculty of Environment Engineering, The University of KitakyushuFurukawa Techno Material Co., LtdWhen an elongated columnar shape memory alloy (SMA) element buckles, in some cases it exhibits negative stiffness. This post-buckling negative stiffness can be repeatedly used as SMAs can recover their shape. This property has potential application to passive vibration isolation devices. A previous study on the behavior of convex-tape-shaped Ti-Ni SMA elements found that their properties are superior to those of normal flat-tape-shaped SMA elements. However, a Ti-Ni SMA has a high dependence on environmental temperature. Therefore, this study investigates the effect of cross-sectional curvature on the buckling characteristics of convex-tape-shaped Cu-Al-Mn SMA elements, whose shape memory and mechanical properties are less dependent on environmental temperature than those of a Ti-Ni SMA, using the three-dimensional finite element method and a buckling test. The results show that the post-buckling negative stiffness increases with increasing cross-sectional curvature. This tendency is similar to that for a Ti-Ni SMA, indicating that the buckling characteristics of a Cu-Al-Mn SMA can be designed using methods for a Ti-Ni SMA. Moreover, the lower temperature dependence of a Cu-Al-Mn SMA compared to that of a Ti-Ni SMA makes a Cu-Al-Mn SMA more suitable as a material for vibration isolators.https://www.jstage.jst.go.jp/article/mej/11/6/11_24-00131/_pdf/-char/enshape memory alloy (sma)ti-nicu-al-mnbucklingnegative stiffnesspassive vibration isolation device |
| spellingShingle | Shuto NAKASHIMA Hiroki CHO Takumi SASAKI Sumio KISE Effect of the curvature of the cross-section on buckling characteristics of convex-tape-shaped Cu-Al-Mn shape memory alloy elements Mechanical Engineering Journal shape memory alloy (sma) ti-ni cu-al-mn buckling negative stiffness passive vibration isolation device |
| title | Effect of the curvature of the cross-section on buckling characteristics of convex-tape-shaped Cu-Al-Mn shape memory alloy elements |
| title_full | Effect of the curvature of the cross-section on buckling characteristics of convex-tape-shaped Cu-Al-Mn shape memory alloy elements |
| title_fullStr | Effect of the curvature of the cross-section on buckling characteristics of convex-tape-shaped Cu-Al-Mn shape memory alloy elements |
| title_full_unstemmed | Effect of the curvature of the cross-section on buckling characteristics of convex-tape-shaped Cu-Al-Mn shape memory alloy elements |
| title_short | Effect of the curvature of the cross-section on buckling characteristics of convex-tape-shaped Cu-Al-Mn shape memory alloy elements |
| title_sort | effect of the curvature of the cross section on buckling characteristics of convex tape shaped cu al mn shape memory alloy elements |
| topic | shape memory alloy (sma) ti-ni cu-al-mn buckling negative stiffness passive vibration isolation device |
| url | https://www.jstage.jst.go.jp/article/mej/11/6/11_24-00131/_pdf/-char/en |
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