I specialise in structural dynamics, with a focus on understanding the linear and nonlinear behaviour of bolted joints and frictional contact interfaces through experimental data. The dynamic behaviour of these interfaces is influenced by numerous parameters, making it difficult to develop comprehensive models that capture all critical factors. Direct measurement and monitoring of contact mechanisms within joint interfaces are not feasible, and the inherent uncertainty in bolted joint contact interfaces often results in significant variability in a structure's dynamic properties. My research aims to create accurate and predictive mathematical models to represent the complex nonlinear mechanisms at these contact points. Numerical simulations involving structures with multiple joints can be time-consuming due to the pronounced nonlinearity of frictional behaviour. Therefore, I focus on developing simplified yet accurate equivalent models for frictional contact interfaces. These models improve the precision of dynamic analyses while reducing computation time, making them highly effective for simulating real-world structural behaviour.
Structural dynamics
Inverse problems in vibration
Improvement of finite element models using experimental data
Modelling and identification of nonlinear mechanical joints
Frictional contact interface modelling
Uncertainty quantification in structural dynamics
Dynamics of rotating machinery
Machining vibration
- Please visit the Pure Research Information Portal for further information
- Harmonic-Balance-Based parameter estimation of nonlinear structures in the presence of Multi-Harmonic response and force, Taghipour, J., Haddad Khodaparast, H., Friswell, M., Shaw, A., Jalali, H., Jamia, N. 1 Jan 2022, In: Mechanical Systems and Signal Processing
- An equivalent model of a nonlinear bolted flange joint, Jamia, N., Jalali, H., Taghipour, J., Friswell, M., Khodaparast, H. 15 May 2021, In: Mechanical Systems and Signal Processing
- Stochastic modelling and updating of a joint contact interface, Jalali, H., Haddad Khodaparast, H., Madinei, H., Friswell, M. 15 Aug 2019, In: Mechanical Systems and Signal Processing
- The effect of preload and surface roughness quality on linear joint model parameters, Jalali, H., Khodaparast, H., Friswell, M. 12 May 2019, In: Journal of Sound and Vibration
- A modal-energy based equivalent lumped model for open cracks, Jalali, H., Noohi, F. 1 Jan 2018, In: Mechanical Systems and Signal Processing
- Linear contact interface parameter identification using dynamic characteristic equation, Jalali, H. 1 Jan 2016, In: Mechanical Systems and Signal Processing
- Micro/macro-slip damping in beams with frictional contact interface, Asadi, K., Ahmadian, H., Jalali, H. 8 Oct 2012, In: Journal of Sound and Vibration
- Identification of micro-vibro-impacts at boundary condition of a nonlinear beam, Jalali, H., Ahmadian, H., Pourahmadian, F. 1 Apr 2011, In: Mechanical Systems and Signal Processing
- Nonlinear model identification of a frictional contact support, Ahmadian, H., Jalali, H., Pourahmadian, F. 1 Nov 2010, In: Mechanical Systems and Signal Processing
- Identification of nonlinear bolted lap-joint parameters by force-state mapping, Jalali, H., Ahmadian, H., Mottershead, J. 15 Dec 2007, In: International Journal of Solids and Structures
- Dylan Brown Modelling and Experimental Analysis of Bolted Joint Dynamics Start Date: 01/10/2024
- Dylan Brown Modelling and Experimental Analysis of Bolted Joint Dynamics Start Date: 01/10/2024 End Date: 17/10/2025
Mechanical Engineering PhD August 31 2007
