[PDF] Top 20 Modelling ground vibrations induced by harmonic loads

... for modelling the dynamic behaviour of strip foundations over homogeneous half-space media and then over a soil deposit over either half-space or ...train-induced ground vibrations – for ... See full document

... the ground vibration induced by a falling weight could be traced back at least to Lamb in ...concentrated harmonic force, and derived an analytical solution for the displacement in an integral form ... See full document

... vertical ground veloc- ity at 9 m from the track, resulting from the application of the ballast reaction forces, obtained from the simulation of each vehicle / track model, on the 3-D FEM model of the ... See full document

... response from moving loads. This area of research was expanded upon by Krylov et al. [4], Cai et al. [5] and more recently by Salvador et al. [6] to focus specifically on high speed train problems. One such ... See full document

... point loads acting on a rail surface at different locations and different instances of ...track/ ground system, as well as body and surface ground waves generated at all excitation points, which ... See full document

... In this paper, we suppose that N identical, point masses are symmetrically and uniformly arranged around a fixed circle so that the masses are coupled with massless, ideal springs... All[r] ... See full document

... In Solid-Works software, ‘Part & Sheet metal’ module has been used to design the OCB components. Assembly was made by using ‘Bottom-up’ modelling technique. However, the mainly three techniques, namely ... See full document

... Both the direct connection and Scott transformer do not generate zero sequence harmonic current. The results also reveal that the Scott transformer cancels out the positive-sequence component of (4k-1) order ... See full document

... as vibrations and so ...mathematical modelling of unforced vibrations of a multistory buildings model and forced vibrations of a multistory buildings model also been discuss to make sure there ... See full document

... Using the ideas of transformation from three-phase to two-phase, we will transform three-phase voltage and three-phase current to the two orthogonal system, so as to calculate the instantaneous active power and reactive ... See full document

... deterministic loads, which do not take into account the stochastic nature of the walking load introduced by the walking parameters and the use of stochastic models, which implies a more advanced approach for ... See full document

... the harmonic analysis for those connected loads is ...predominant harmonic order is identified and mitigated by using filter bank in combination with the proposed ...total harmonic distortion ... See full document

... is ground vibration, noise, ...the ground vibrations generated due to blasting operations are monitored at a known distance from blast site with a geophone/ground vibration monitor, in three ... See full document

... 3.5.2 Directly transmitted ground motion 3.5.3 Net ground shock loads on structures 3.6 Modelling considerations of blast loads for nonlinear dynamic analysis CHAPTER 4 FINITE ELEMENT FO[r] ... See full document

... measured harmonic distortion ...customer loads are being dominated by sensitive and sophisticated non- linear customer loads such as computer, fluorescent lamp, CFL lamp and small scale industry ... See full document

... Industrial, commercial and domestic consumers require high quality electricity supply for healthy operation of their electrical devices and equipment but with a distorted electricity supply, the chances of improved ... See full document

... harmonic test a drop of natural frequency occurred just before the crack propagated through the whole cross-section. For that case the real-time control was not sufficiently reliable and the fatigue failure was ... See full document

... of harmonic results in premature equipment failure and also cause of requirement of equipment of high rating The voltage distortion produced in the system is the major issue with the harmonics ... See full document

... Abstract: Modal analysis is the study of the dynamic properties of structures under vibrational excitation. Modal analysis is the field of measuring and analysing the dynamic response of structures, when excited by an ... See full document

... Apart from enabling the 2-D VIV analysis and prediction by also confirming several meaningful VIV aspects observed experimentally, the proposed simulation model could be further improved by calibrating empirical ... See full document