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Using the flexibility change, a coupled method is proposed in this paper to detect damages in beam structures. The present algorithm makes use of an original finite element model and a subset of measured eigenvalues and eigenvectors. The proposed method identifies structural damages in two steps. Using the change of structural flexibility, a damage localization criterion is defined firstly to determine...
This paper first formally defines a general class of three dimensional rectifier systems which capture the essential aspects of animal locomotion, then formulates an optimal gait problem, and finally solves an approximation of the problem to obtain a globally optimal solution. The approximation assumes small-amplitude harmonic oscillations of mechanical joints about a nominal posture. The problem...
The application of the semiclassical dynamics simulation on a parallel computer has been found to be a challenge. The most time consumable computations in this large scale simulation package are the calculations of the Hamiltonian matrix elements, determination of eigenvalues and eigenvectors of complex symmetric matrices, and evaluations of the first derivatives of various quantities with respect...
This paper deals with the mathematical model and properties of a new scattering matrix of given antenna array normalized to complex multiport impedance matrix of generators. The introduced scattering matrix is described a matching problem for a connection of array with multiport beamformer. The scattering parameters are based on eigenvalues and eigenvectors of the antenna multiport matrices. As shown...
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