Concrete and Earthquake Engineering Research Group

Department of Civil & Structural Engineering

Mr Mohammad Moavi

Research Student

Contact

mmoavi1@sheffield.ac.uk

Department of Civil and Structural Engineering, Room D120
Sir Frederick Mappin Building
Mappin Street,
Sheffield,
S1 3JD

Profile

Mohammad obtained his 4-year BSc in Civil Engineering with Distinction (with an emphasis in Structural Engineering) from Shahid Chamran University in 2009 in Ahvaz, Iran. He completed his MSc in Earthquake Engineering with Distinction at the Persian Gulf University in Boushehr, Iran in 2013. His dissertation focused on “The effects of spectral attenuation relationships on the results of probabilistic seismic hazard analysis”, under the supervision of Dr M. Mahdavi Adeli. Mohammad has 4 years of experience as a design engineer and seismic hazard analyst. He has thought various courses and software such as "Strength of materials", "Linear and non-linear analysis of structures", "Structural dynamic", and "Drain-2DX" and "OpenSees" software.  He is an expert in analysis, design and control of steel structures under earthquake loading. After working in industry, he joined the Concrete and Earthquake Engineering (CEE) research group of the University of Sheffield in 2017 to pursue his PhD. Mohammad is currently working on the seismic strengthening of steel structures with friction connections using innovative semi-active control systems to improve their seismic performance under seismic excitation. His research interests include earthquake engineering, passive and semi-active control systems, and optimization. 

Recent activities and achievements

Project title: 

Performance-based improvement of steel structures with rotational friction connections under seismic excitation 

Objectives:

The main aim of the research is to examine the efficiency of existing friction-based semi-active seismic control of multi-story buildings. Along with this, the mechanisms behind the performance of each system will also be investigated. The research also aims at developing an efficient and simple friction-based semi-active algorithm, as a possible solution to the limitations of existing semi-active systems. This will be done through the following objectives:

  1. Assessing the performance of semi-active control systems for a broad range of dampers’ capacities, aiming at identifying optimum systems, and examination of their mechanisms.
  2. Boundary layer controllers and Tri-D control, and examination of its mechanism.
  3. Developing more efficient semi-active control algorithms, compensating the limitations of passive and existing semi-active controllers, and assessing their performance.
  4. Optimizing the control functions in a way that the structure exhibits a more uniform distribution of drift/damage under a design earthquake.
  5. Studying different semi active control algorithms to find the most efficient feedback control algorithm to adjust the characteristics of the supplemental dampers based on the structural response

Expected results:

  1. Development of a computational tool for simulations of the seismic response of a variety of non-linear frame structures under different ground excitations, in order to investigate the efficiency of semi-active control systems
  2. Development of a new semi-active control strategy to adjust the characteristics of the proposed rotational friction damper based on the structural response
  3. Development of semi- active control systems in which seismic energy is dissipated through hysteretic frictional mechanisms by using novel semi-active control strategy

Supervisors:  Dr Mihail Petkovski, Dr Iman Hajirasouliha, Prof Kypros Pilakoutas