چکیده مقاله
In this work, bending equations of prismatic SMA beams in martensite phase and at low temperature is derived analytically and verified by experimental tests A onedimensional model having asymmetric response during tension and compression has been proposed In this model, elastic modulus depends on the progress of martensitic phase transformation and martensite twined and detwinned phases have different material parameters In addition, in martensite detwinned phases favored by tension and compression, the slopes of loading and unloading are completely diverse According to the pure bending solution as well as considering semi analytical methods, we obtain general bending equations of an SMA beam based on the pure bending solution Using polynomial approximation functions, the relationship between deflection and length has been obtained We have conducted three and four point bending tests for rectangular as well as circular SMA beams A reasonable accuracy between analytical results and experimental data is obtained in this paper
کلیدواژهها
نویسندگان
Alireza Ostadrahimi
School of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran
Fathollah Taheri-behrooz
School of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran
Eunsoo Choi
Department of Civil Engineering, Hongik University, Seoul, South Korea
شیوه ارجاع
Ostadrahimi, Alireza and Taheri-behrooz, Fathollah and Choi, Eunsoo,1400,Flextural behavior of martensite Ni-Ti beams,18th National Conference and 7th International Conference on Manufacturing Engineering in Iran
ارائهشده در
مجموعه مقالات هجدهمین همایش ملی و هفتمین کنفرانس بین المللی مهندسی ساخت و تولید ایران11 اسفند 1400 · تهران