Abstract: The use of fractional derivatives has proved to be very successful in describing the behavior of damping materials, in particular, the frequency dependence of their parameters. In this article ...

Abstract: In this paper a new free interface modal synthesis method for the dynamic analysis of linear structures by the finite element method is developed. The technique is based on the so called ...

Abstract: The calculation of the combined eigenproperties of a nonclassically damped structure and a supported equipment is of practical interest. Herein an approach is developed whereby these properties ...

Abstract: A synthesis approach is presented for calculating the complex eigen‐properties of a nonclassically damped structure from the complex eigenproperties of the constituent substructures which are also nonclassically damped. ...

Abstract: A modal synthesis method is presented to calculate the lower eigenproperties of a general dynamic system divided into subsystems. The left and right eigenproperties of the subsystems associated with their equations of ...

Abstract: The equations of motion of rotating machines subjected to seismic motions are quite complex, consisting of asymmetric general matrices with parametric and gyroscopic terms. Fortunately, the ...

Abstract: A preliminary experimental investigation is carried out to assess the feasibility of the adaptive feedforward control approach for the response reduction of structures excited by seismic ground motions. Although adaptive ...

Abstract: This paper presents two simplified methods for calculating the seismic force coefficients for flexible nonstructural components in building structures. The methods utilize the dynamic characteristics, expressed in terms ...

Abstract: The paper examines the seismic design force formulas that are currently prescribed in the 2003 NEHRP Provision for the design of nonstructural components in buildings, and presents new formulas to improve the these ...