liquid into the nanopores of a solid lyophobic body under pressure is accompanied by
a forced development of the phase interface and the accumulation of the Gibbs large
surface energy system. When the pressure in the system decreases, the liquid is
displaced itself from the matrix liminal space (extrusion process) and returns the
system to the initial base. During the "intrusion-extrusion" process, a hysteresis loop is
realized, which leads to a considerable dissipation of the mechanical energy and a
significant nonlinearity of the system stiffness.
Figure 3. The oscillation damping with a power characteristic with a damping
decrement upon the average 1,95
The characteristic "load-unloading" was experimentally established by the
pressure of HLS on a special testing bench under the conditions of the multiplicatory
hydraulic drive of the manipulator [4].
The HLS in a flexible shell-container is installed in the animated image chamber.
Indicators for pressure, temperature and displacement were used to record process
parameters. As the substance of the HLS, we use a system of "hydrophobized silica
gel" (Symetry C8 / Waters) with a highly developed internal surface plus water as a
"working fluid" in a special container (50x23x8) mm, which passed the degasification
with removal from the mixture air. As a process liquid, AMG-40 mineral oil was used
in the animated image chamber.
The fragments of oscillograms that characterize the HLS load-unloading
processes and the approximation of these curves by a piecewise linear function are
shown in fig. 4a, b.
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