Title of article :
SEISMIC OPTIMIZATION OF STEEL SHEAR WALL USING SHAPE MEMORY ALLOY
Author/Authors :
Kamgar, R Department of Civil Engineering - Shahrekord University, Shahrekord , Askari Dolatabad, Y Department of Civil Engineering - Sirjan University of Technology, Sirjan , Babadaei Samani, M. R Department of Civil Engineering - Seed of Arian Saze Zagros - Chaharmahal Science & Technology Park, Shahrekord
Abstract :
Nowadays, steel shear walls are used as efficient lateral-load-resistant systems due to their
high lateral stiffness and carrying capacity. In this paper, the effect of substituting a shape
memory alloy (SMA) material is investigated instead of using conventional steel in the shear
wall. A numerical study is conducted using finite element method (FEM) by OpenSees
software. For this purpose, at first, to verify the numerical simulation, the results of the
experimental data are compared with those obtained from the numerical phase. Finally, the
behavior of a one-bay three-story steel frame equipped with shear walls made of
conventional steel, shape memory alloy and a combination of these two materials are studied
when the structure is subjected to cyclic and seismic loadings. Results indicate that the use
of shape memory alloy increases the maximum deformation, the yield displacement, and
also the loading capacity of the structure. Also, it decreases the residual deformation of the
structure and its initial stiffness. In general, using composite materials of conventional steel
and shape memory alloy can reduce the maximum value of compression axial load of the
column and, as a result, increase maximum rotation at the connections. In addition, the
minimum and maximum values of base shear occurred in the model with 50% and 25% of
Ni-Ti SMA material, respectively.
Keywords :
shear wall , shape memory alloy , cyclic loading , seismic loading , strip method
Journal title :
Astroparticle Physics
