Andris Freimanis
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View article: Study of Asphalt-Concrete Pavement Fatigue Modeling
Study of Asphalt-Concrete Pavement Fatigue Modeling Open
Deterioration of asphalt pavements due to fatigue cracking is one of the most common highway pavement failure types. If the fatigue cracks are allowed to develop and grow, the driving comfort and safety, i.e., serviceability of the pavemen…
View article: Crack development assessment using modal analysis in peridynamic theory
Crack development assessment using modal analysis in peridynamic theory Open
If structural damage remains undetected and is allowed to grow, structure's load-bearing capacity deteriorates, which can lead to costly repairs or in extreme cases its collapse. Modal analysis is widely used to detect structural damage be…
View article: Peridynamic Analysis of Rail Squats
Peridynamic Analysis of Rail Squats Open
Rail surface defects are a serious concern for railway infrastructure managers all around the world. They lead to poor ride quality due to excess vibration and noise; in rare cases, they can result in a broken rail and a train derailment. …
View article: Normalised curvature square ratio for detection of ballast voids and pockets under rail track sleepers
Normalised curvature square ratio for detection of ballast voids and pockets under rail track sleepers Open
After a railway track experiencing dynamic loading, the track settles and causes ballast to deform, spread and sometime damage. Without appropriate maintenance, void and pocket of ballast underneath railway sleepers can establish overtime …
View article: Peridynamics Modelling of Rail Surface Defects in Urban Railway and Metro Systems
Peridynamics Modelling of Rail Surface Defects in Urban Railway and Metro Systems Open
Rail squats and studs, which are one of critical rail surface defects, are typically classified as the propagation of any cracks that have grown longitudinally through the subsurface. [...]
View article: Modal analysis of isotropic beams in peridynamics
Modal analysis of isotropic beams in peridynamics Open
Modal analysis in continuum mechanics is widely used in damage detection, quality control and to validate numerical simulations. Peridynamics is a reformulation of continuum mechanics that allow discontinuities, such as cracks and voids, t…
View article: Mesh Sensitivity in Peridynamic Quasi-static Simulations
Mesh Sensitivity in Peridynamic Quasi-static Simulations Open
Peridynamics is a non-local formulation of continuum mechanics that does not rely on spatial derivatives, therefore peridynamics is well suited for crack and failure modeling. Body is discretized in a finite number of particles and each pa…
View article: Comparision of constant-span and influence line methods for long-span bridge load calculations
Comparision of constant-span and influence line methods for long-span bridge load calculations Open
Traffic load models available in building standards are most often developed for short or medium span bridges, however, it is necessary to develop traffic load models just for long span bridges, because the most unfavourable traffic situat…
View article: Comparision of Constant-Span and Influence Line Methods for Long-Span Bridge Load Calculations
Comparision of Constant-Span and Influence Line Methods for Long-Span Bridge Load Calculations Open
Traffic load models available in building standards are most often developed for short or medium span bridges, however, it is necessary to develop traffic load models just for long span bridges, because the most unfavourable traffic situat…