The research for mechanics stimulation method of nonlinearrandom vibration based on statistical linear theory
Journal Title: Frattura ed Integrità Strutturale - Year 2014, Vol 8, Issue 29
Abstract
Earthquake disasters have brought great harm to people's life safety and economic property. Itseffect on fabric mainly focus on random effects currently, the general pseudo excitation method could solve theinefficiency calculation problem of linear random earthquake. However it could not take the nonlinear problemfactors into account for calculation. In this paper, we suggest that a nonlinear structural incentive methodshould be improved based on statistical linearity to calculate and solve absolute displacement value. Throughthe analysis and research for cases, we calculate the displacement, speed, random vibration spectrum of bridge’saccelerated speed, as well as the influencing situation of axial force. The results indicate that such perfectincentive method could not only perform nonlinear structure analysis, but also to be very accurate and higheffective. Such method could reasonably avoid the displacement decomposition and solution of the pseudostaticmodel，thus it will be widely applied in common software.
Authors and Affiliations
Wang Guodong
Keywords
Related Articles
- EP ID EP88633
- DOI 10.3221/IGF-ESIS.29.33
- Views 75
- Downloads 0
The notch effect on fracture of polyurethane materials
This paper investigates the fracture properties and notch effect of PUR materials with four different densities. The asymmetric semi-circular bend specimen was adapted to perform mixed mode fracture toughness tes...
Modello di tenuta della flangia bullonata, senza guarnizione, mediante l’analogia della meccanica della frattura di una fessura parzialmente aperta
I compressori centrifughi di elevate dimensioni non permettono l’utilizzo di guarnizioni deformabili, per cui le due metà della flangia di connessione sono forzate mediante bullonatura e la tenuta è affidata al contatto...
Prediction of three-dimensional crack propagation paths taking high cycle fatigue into account
Engine components are usually subject to complex loading patterns such as mixed-mode Low Cycle Fatigue Loading due to maneuvering. In practice, this LCF Loading has to be superimposed by High Cyclic Fatigue L...
Cracks path growth in turbine blades with TBC under thermo – mechanical cyclic loadings
Blades of combustion turbines are extremely loaded turbojet elements, which transmit operative energy onto a rotor. Experiences of many years indicate, that cracks initiation and propagation in the blades dur...
A magnetorheological clutch for efficient automotive auxiliary device actuation
In this paper the results of a project funded by Regione Toscana aimed at reducing the power absorption of auxiliary devices in vehicles are presented. In particular the design, testing and application of a magneto...