Experimental behavior of iron-based shape memory alloys under cyclic loading histories
نویسندگان
چکیده
The present paper investigates the behavior of iron-based shape memory alloys (Fe-SMAs) subjected to cyclic inelastic straining by means uniaxial coupon experiments. tests feature round bar coupons a broad range strain histories representative earthquake loading. experimental results suggest that Fe-SMA under investigation exhibits an asymmetric stress-strain relation, with limited superelastic behavior. It was found post-yield/phase transformation alloy is both strain-rate and temperature-dependent. Quantitative comparisons structural steels nominally identical indicate that, although studied has similar energy dissipation per loading excursion respect conventional S355J2+N, Fe-SMA’s hardening response appreciably higher, leading comparatively larger elastic energies being stored.
منابع مشابه
Numerical and Experimental Study on Ratcheting Behavior of Plates with Circular Cutouts under Cyclic Axial Loading
In this paper, accumulation of plastic deformation of AISI 1045 steel plates with circular cutouts under cyclic axial loading is studied. Loading was applied under force-control conditions. Experimental tests were performed using a Zwick/Roell servo hydraulic machine. Under force-control loading with nonzero mean force, plastic strain was accumulated in continuous cycles called ratcheting. Nume...
متن کاملSuperelastic Behavior under Cyclic Loading for Coil Spring of Ti-Ni Shape Memory Alloy
The superelastic behavior of coil springs of a Ti-Ni shape memory alloy was investigated using loading-unloading cycling tests under isothemal temperatures. The effects of the Ni content and shape memory treatment temperatures on the cyclic behavior in the superelastic deformation were investigated. The deformation behavior within the elastic region of the parent phase scarcely changes during t...
متن کاملSubstructure Model for Concrete Behavior Simulation under Cyclic Multiaxial Loading
This paper proposes a framework for the constitutive model based on the semi-micromechanical aspects of plasticity, including damage progress for simulating behavior of concrete under multiaxial loading. This model is aimed to be used in plastic and fracture analysis of both regular and reinforced concrete structures, for the framework of sample plane crack approach. This model uses multilamina...
متن کاملTRANSFORMATION BEHAVIOR OF NiTi SHAPE MEMORY ALLOYS TREATED BY THERMOMECHANICAL PROCESSING USING DSC
Abstract: In the present study the effect of thermomechanical treatment (cold work and annealing) on the transformation behavior of NiTi shape memory alloys was studied. Differential scanning calorimetry was used to determine transformation temperature and its relation to precipitates and defects. Three alloys including Ti-50.3at.% Ni, Ti-50.5at.% Ni (reclamated orthodontic wires) and 50.6at...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Construction and Building Materials
سال: 2021
ISSN: ['1879-0526', '0950-0618']
DOI: https://doi.org/10.1016/j.conbuildmat.2020.121712