Seyyed Aliasghar Arjmandi

University of Zanjan · Department of Civil Engineering

Soltaniyeh dome is the largest brick dome in the world and registered in UNESCO’s world heritage site that makes it one of the most important historical buildings in Iran. It suffered significant damages during its lifetime; therefore, preservation of that from the future destruction is vital. In this paper, the vulnerability of the structure was s...

In the event of an earthquake, the beam-column joints in the reinforced concrete moment-resisting frame structures are affected by a high level of deformations and stresses. Due to these deformations and stresses, the joint can be damaged and even fractured in some cases. The failure of the beam-column joint can cause the building to collapse. In r...

In this work, zinc ferrite magnetic and zinc ferrite-graphene oxide nanocomposites were synthesized through a facile hydrothermal method and their absorbing capability for dye removal was studied. Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD) and scanning electron microscopy (SEM) were used to characterize the synthesized...

In this study, three well-known approaches for computing mode shapes and natural frequencies of fluid-structure systems are investigated and compared. These techniques are variants of subspace, Lanczos and Arnoldi eigensolvers suitable for considered problem. The fluid and structure domains are discretized with finite elements and are formulated ba...

The pseudo symmetric subspace iteration method is an efficient technique for computing mode shapes of coupled fluid-structure systems. This approach handles the related unsymmetric eigenvalue problem in a manner that is similar to solving a symmetric eigen-problem. Moreover, it employs a symmetric active column solver in the core of its routines, w...

The accurate dynamic analysis of structures is usually performed by a fine finite element discretization with very large number of degrees of freedom. Apart from modal analysis, one can reduce the number of final equations by assuming the deformed shape of the structure as a linear combination of independent Ritz vectors. The efficiency of this met...

In dynamic analysis of many lifeline structures, the soil-structure interaction plays a very important role. It is well known that, the soil must be dealt as an infinite domain to include properly the effect of this interaction into analysis. Apart from modal analysis, one can reduce the number of final equations by assuming the deformed shape of t...