Author
Hem Hunt
Other affiliations: Katholieke Universiteit Leuven
Bio: Hem Hunt is an academic researcher from University of Cambridge. The author has contributed to research in topics: Vibration & Slab. The author has an hindex of 20, co-authored 81 publications receiving 1729 citations. Previous affiliations of Hem Hunt include Katholieke Universiteit Leuven.
Topics: Vibration, Slab, Track (rail transport), Moving load, Base isolation
Papers published on a yearly basis
Papers
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TL;DR: In this article, an analytical three-dimensional model for the dynamics of a deep underground railway tunnel of circular cross-section is presented, where the tunnel is conceptualised as an infinitely long, thin cylindrical shell surrounded by soil of infinite radial extent.
236 citations
TL;DR: In this paper, a track model was added to a previously developed three-dimensional tunnel model in order to assess the effectiveness of floating-slab track, where a concrete slab supporting the two rails was mounted on rubber bearings or steel springs to isolate it from the tunnel invert.
161 citations
TL;DR: In this article, the Fourier transformation method is used to calculate the displacements of a track under an oscillating moving load and the critical velocity of the track is calculated using the cut-on frequencies and critical velocity.
141 citations
TL;DR: In this article, the pipe-in-pipe model is used to model tangential forces at the tunnel wall and three different arrangements of supports are considered for floating-slab tracks.
132 citations
TL;DR: In this paper, two prediction models for calculating vibration from underground railways are developed: the pipe-in-pipe model and the coupled periodic finite element-boundary element (FE-BE) model.
123 citations
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TL;DR: In this article, the state of the art in vibration-based condition monitoring with particular emphasis on structural engineering applications is reviewed, focusing on the use of in situ non-destructive sensing and analysis of system characteristics for detecting changes, which may indicate damage or degradation.
Abstract: Vibration based condition monitoring refers to the use of in situ non-destructive sensing and analysis of system characteristics –in the time, frequency or modal domains –for the purpose of detecting changes, which may indicate damage or degradation. In the field of civil engineering, monitoring systems have the potential to facilitate the more economical management and maintenance of modern infrastructure. This paper reviews the state of the art in vibration based condition monitoring with particular emphasis on structural engineering applications.
1,394 citations
1,197 citations
TL;DR: In this paper, the macroscopic effective stiffness and strength of triangulated face-sheets and tetrahedral core are estimated by idealizing them as pin-jointed assemblies; tests show that this approximation is adequate.
483 citations
TL;DR: In this article, in-plane mechanical properties of periodic honeycomb structures with seven different cell types are investigated, such that initial yield is associated with short column compression or bending, occurring prior to elastic buckling.
Abstract: In-plane mechanical properties of periodic honeycomb structures with seven different cell types are investigated in this paper. Emphasis is placed an honeycambs with relative density between 0.1 and 0.3, such that initial yield is associated with short column compression or bending, occurring prior to elastic buckling. Effective elastic stiffness and initial yield strength of these metal honeycombs under in-plane compression, shear, and diagonal compression (for cell structures that manifest in-plane anisotropy) are reported as functions of relative density. Comparison among different hancycomb structures demonstrates that the diamond cells, hexagonal periodic supercells composed of six equilateral triangles and the Kagome cells have superior in-plane mechanical properties among the set considered.
354 citations
TL;DR: Reading this tutorial is expected to get a flavour of what moving-load problems are about, what general methods are available and what research has been done from studying this tutorial.
305 citations