Numerical Studies of Fracture Initiation and Propagation in Stiff Soil

Wang, Shanyong; Yeung, Albert T.; Au, Siu‐Kui; Fangzhen,; Zhang, H. Q.; Yang, Xueqiang

doi:10.1061/40867(199)35

Cited by 1 publication

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“…In terms of constitutive models of the material, almost all studies only considered linear elastic and linear viscoelastic materials when tackling dynamics of vehicle-pavement interaction because of the complexity of the problem. Asphalt concrete pavement actually exhibits complex viscoelastic-viscoplastic-damage properties [166][167][168][169][170][171][172], which should be integrated into the subject. Also, it is rare to consider the coupling effect of vehicle-pavement interaction, while this is not the case in train-railway interaction because of the mechanism of the interaction and the relative mass difference between vehicles (e.g., car, truck, train, and airplane) and transportation infrastructure (e.g., highway, bridge, and railway).…”

Section: Discussion and Future Researchmentioning

confidence: 99%

An overview of a unified theory of dynamics of vehicle–pavement interaction under moving and stochastic load

Sun

2013

J. Mod. Transport.

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This article lays out a unified theory for dynamics of vehicle-pavement interaction under moving and stochastic loads. It covers three major aspects of the subject: pavement surface, tire-pavement contact forces, and response of continuum media under moving and stochastic vehicular loads. Under the subject of pavement surface, the spectrum of thermal joints is analyzed using Fourier analysis of periodic function. One-dimensional and two-dimensional random field models of pavement surface are discussed given three different assumptions. Under the subject of tire-pavement contact forces, a vehicle is modeled as a linear system. At a constant speed of travel, random field of pavement surface serves as a stationary stochastic process exciting vehicle vibration, which, in turn, generates contact force at the interface of tire and pavement. The contact forces are analyzed in the time domain and the frequency domains using random vibration theory. It is shown that the contact force can be treated as a nonzero mean stationary process with a normal distribution. Power spectral density of the contact force of a vehicle with walking-beam suspension is simulated as an illustration. Under the subject of response of continuum media under moving and stochastic vehicular loads, both time-domain and frequency-domain analyses are presented for analytic treatment of moving load problem. It is shown that stochastic response of linear continuum media subject to a moving stationary load is a nonstationary process. Such a nonstationary stochastic process can be converted to a stationary stochastic process in a follow-up moving coordinate.

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Section: Discussion and Future Researchmentioning

confidence: 99%

An overview of a unified theory of dynamics of vehicle–pavement interaction under moving and stochastic load

Sun

2013

J. Mod. Transport.

View full text Add to dashboard Cite

show abstract

Numerical Studies of Fracture Initiation and Propagation in Stiff Soil

Cited by 1 publication

References 0 publications

An overview of a unified theory of dynamics of vehicle–pavement interaction under moving and stochastic load

An overview of a unified theory of dynamics of vehicle–pavement interaction under moving and stochastic load

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