• Article  

      Assignment of natural frequencies by an added mass and one or more springs 

      Kyprianou, Andreas; Mottershead, J. E.; Ouyang, H. (2004)
      The problem of assigning natural frequencies to a multi-degree-of-freedom undamped system by an added mass connected by one or more springs is addressed. The added mass and stiffnesses are determined using receptances from ...
    • Conference Object  

      Bond graph based modal decomposition of systems with non-proportional damping 

      Louca, Loucas S. (Affiliation: Department of Mechanical and Manufacturing Engineering, University of Cyprus, 75 Kallipoleos Street, Nicosia 1678, CyprusCorrespondence Address: Louca, L.S.Department of Mechanical and Manufacturing Engineering, University of Cyprus, 75 Kallipoleos Street, Nicosia 1678, Cyprusemail: lslouca@ucy.ac.cy, 2012)
      Modal analysis of lumped parameter and continuous dynamic linear systems is extensively used to study their dynamic behavior and controller design. In both cases, a reduction of the model size that does not degrade accuracy ...
    • Article  

      First-passage study and stationary response analysis of a BWB hysteresis model using quasi-conservative stochastic averaging method 

      Noori, M.; Dimentberg, M.; Hou, Z.; Christodoulidou, R.; Alexandrou, Andreas N. (1995)
      The quasi-conservative stochastic averaging (QCSA) method is applied to a Bouc-Wen-Baber hysteretic system (BWB) under Gaussian white noise excitations. The stationary probability density of the system's response amplitude ...
    • Conference Object  

      Modal analysis reduction of multi-body systems with generic damping 

      Louca, Loucas S. (Caltek s.r.l., 2012)
      Modal analysis of multi-body systems is broadly used to study the behavior and controller design of dynamic systems. In both cases, model reduction that does not degrade accuracy is necessary for the efficient use of these ...
    • Article  

      Modal analysis reduction of multi-body systems with generic damping 

      Louca, Loucas S. (2014)
      Modal analysis of multi-body systems is broadly used to study the behavior and controller design of dynamic systems. In both cases, model reduction that does not degrade accuracy is necessary for the efficient use of these ...
    • Article  

      Modelling and Simulation of Bolted Joints under Harmonic Excitation 

      Oldfield, M.; Ouyang, H.; Mottershead, J. E.; Kyprianou, Andreas (2003)
      Bolted metal joints under harmonic loading exhibit hysteretic behaviour. This is the major source of damping in frame structures with bolted joints, since the material damping of these structures is very small. In this ...
    • Conference Object  

      Non-linear base and shaft reaction models for 1-D pile driving analysis 

      Loukidis, D.; Salgado, R.; Abou-Jaoude, G.; Zhang, Y. (19th ICSMGE Secretariat, 2017)
      Simulation of pile driving is frequently used in present design practice to study pile drivability and to estimate pile static capacity based on driving data. The accuracy of both drivability analysis and static resistance ...
    • Article  

      Structural modification. Part 1: Rotational receptances 

      Mottershead, J. E.; Kyprianou, Andreas; Ouyang, H. (2005)
      The inverse problem of assigning natural frequencies and antiresonances by a modification to the stiffness, mass and damping of a structure is addressed. Very simple modifications such as the addition of masses and grounded ...
    • Article  

      Structural modification. Part 2: Assignment of natural frequencies and antiresonances by an added beam 

      Kyprianou, Andreas; Mottershead, J. E.; Ouyang, H. (2005)
      In this paper the inverse structural modification problem is solved in order to determine the dimensions of the cross-section of a beam that when added to an original structure will assign natural frequencies or antiresonances ...