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 96
- Downloads 0
Fracture toughness and fatigue resistance of quenched and tempered steels with microstructures deriving from a slant quench. Consequences on technical standards
Mechanical components fabbricated with quenched and tempered steels, exhibiting mixed microstructures as derived from slant quench conditions, are frequently encountered in the industrial practice, owing to a tendency to...
Models of initiation fatigue crack paths proposed by Macha
Professor E. Macha devoted his academic life to solving the problems connected with random multiaxial fatigue in components of machines and structures. In his studies he formulated stress, strain and energy crite...
A numerical study of two different specimen fixtures for the modified compact tension test – their influence on concrete fracture parameters
The modified compact tension test (MCT) may represent a new test configuration for the performance of static and other kinds of fatigue tests on concrete-like materials. Core drilling can be employed to obtai...
Some practical crack path examples
It is well known that many engineering structures and components, as well as consumer items, contain cracks or crack-like flaws. It is widely recognised that crack growth must be considered both in design and in...
An effect of heat insulation parameters on thermal losses of water-cooled roofs for secondary steelmaking electric arc furnaces
The aim of this work is research in the insulation parameters effect on the thermal losses of watercooled roofs for secondary steelmaking electric arc furnaces. An analytical method has been used for the investig...