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The finite element simulation suggests that the changes in modulus of elasticity of sleeper, Esleeper and the sleeper support modulus, Us have a significant influence on the behaviour of turnout sleepers.
Using data from track-mounted geophones, it is shown that the properties of the train load spectrum, together with a model for track behaviour, allows calculation of the track system support modulus without knowledge of the axle loads, and enables rapid determination of the train speed.
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Efforts to understand and engineer cell behavior in mechanically soft environments frequently employ two-dimensional cell culture substrates consisting of thin hydrogel layers with low elastic modulus supported on rigid substrates to facilitate culturing, imaging, and analysis.
Ultrasound resonance measurements of the elastic modulus strongly support these theoretical predictions.
It was observed that dynamic loaded height, unloaded height and dynamic hysteresis decreased with flex time while dynamic modulus and support factor increased with flex time for most of the seat cushion materials.
Finite element programs that support temperature-dependent elastic modulus and a corresponding initial temperature field take this into account when computing each element's stiffness matrix.
Furthermore, all the solutions must agree on a variety which contains the hull (in an appropriate, weaker, sense) of a measure supported on the maximum modulus set.
The sonic test resulted in characteristic values of propagation velocities of the sonic waves in the analyzed walls, with these results obtained values of Young's modulus that supported the mechanical tests.
We demonstrated that amongst CMC/sCMC/gelatin hydrogels cross-linked with 1 and 2 mM H2O2, the latter demonstrated significantly higher compressive modulus and supported better in vitro cartilage formation.
A simplified grillage beam analogy was performed to investigate the behaviour of railway turnout sleeper system with a low value of elastic modulus on different support moduli.
Parameters explored here include P-wave velocity, static modulus of deformation, support pressure, tunnel deformation, Lugeon-value, and the possible cohesive and frictional strength of rock masses, undisturbed, or as affected by underground excavation.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com