The theory calculation formula is deduced about stress distribution in cross section and changes in Martensite percentages with the section height of random section shape bar under the action of the bending moment according to the Brinson's Constitutive Relation.The bar's energy dissipation capability under circulation of bending moment was analyzed and the calculation theory was set up. By using MATLAB program and the numerical calculation for uniform rectangle cross section bar, the relationships among the maximal stress and strain on cross section edge with bend load, the stress and Martensite percent's with cross section height, the energy dissipation capability with cross section height, and the energy dissipation capability with maximal strain on cross section edge are gained, also those curves are discused. It is put forward that the SMA material can be used for passive structure vibration control to dissipate energy of bend load.
参考文献
| [1] | Kim-Holp .Energy Dissipation in Shape Memory Alloy Wires Under Cyclic Bending[J].Smart Materials and Structures,2000,9:653-659. |
| [2] | Abeyaratne R;Kim S-J;Knowles J K .A One-dimensional Continuum Model for Shape-memory Alloys[J].International Journal of Solids and Structures,1994,31:2229-2249. |
| [3] | Tanaka K;Iwasaki R .A Phenomenological Theory of Transformation Superplasticity[J].Engineering Fracture Mechanics,1985,21(04):709-720. |
| [4] | Liang C.The Constitutive Modeling of Shape Memory Alloys[M].Virginia Polytechnic Institute and State University,1990 |
| [5] | Brinson L C .One-dimensional Constitutive Behavior of SMA:Themomechanical Derivation with Non-constant Material Functions[J].Journal of Intelligent Material Systems and Structures,1993,4(02):229-242. |
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