Abstract: The paper is devoted to the estimation of the lower bound of the stability threshold speed (STS) of a flexible rotor system supported in fluid-film bearings. It is proved theoretically that ...

Abstract: The dynamic stability of a high-spinning liquid-filled rotor with both internal and external damping effects involved in is investigated in this paper. First, in the case of the rotor subjected ...

Abstract: The variational approach, which is used to solve the Reynolds equation based on the assumption of constant temperature, is extended to the generalized Reynolds equation calculation. The direct ...

Abstract: The use of chlorine dioxide (

Abstract: The dynamic flexibility (DF) and improved dynamic flexibility (IDF) methods can be applied to extract constrained structural modes from free-free modal test data. The residual flexibility method is also good for boundaries ...

Abstract: The computation of many eigenvector derivatives is required in the fields of structural optimal design, and update and localization of model error. Existing methods, except for the incomplete truncated modal methods and a ...

Abstract: The theoretical derivation proposed in this paper uses a specific pseudoinverse technique baesd on an incomplete set of measured modes to satisfy the orthogonality condition. Unlike others, this method demonstrates that ...

Abstract: The groundwater flow velocity might be temporally variable instead of being a constant as most analytical solutions of solute transport in the subsurface commonly assume. This study investigates the impact of transient ...

Abstract: Imbricate structures play an important role in river stability. However, quantitative experimental studies have been rarely conducted. In this study, four types of uniform particles with different degrees of flatness were ...

Abstract: Based on the free boundary theory and variational method, this paper presents a Ritz method to compute the instantaneous hydrodynamic forces of a real bearing subject to any perturbed motions ...