Geology Reference
In-Depth Information
Gas Spring:
Invention to increase the restoring
forces of TLCGD by the compressibility of the gas.
Passive Damping with Dynamic Absorber:
Vibration reduction based on an energy transfer
from a main system to a passive absorber with
sufficient energy dissipation.
Pendulum Dashpot Absorber:
Pendulum
type dynamic absorber with restoring forces due
to gravity, energy dissipation is provided by a
dashpot.
Pipe in Pipe TLCGD:
Novel vertical TLCGD
to efficiently reduce dominantly vertical vibra-
tions.
Spring Mass Dashpot Absorber (SMDA):
Dynamic absorber whose restoring forces are
provided by an elastic spring, the dashpot provides
sufficient energy dissipation.
State Space Optimization:
Accounting for
neighboring modes of vibrations and rendering
the TLCGD design parameter slightly modified
and more robust. Although derived for harmonic
excitation it can also be interpreted in terms of
stochastic quantities. Using generalized coordi-
nates the dynamic system is only weakly coupled
and the optimization converges well to the desired
TLCGD parameter.
TLCGD:
Dynamic absorber using a liquid,
preferably water, instead of a rigid mass. The liquid
is guided in a rigid piping system and excited by
floor displacements.
TMD-TLCGD Analogy:
Equivalence in both
damping properties and optimization procedure
of TMD and TLCGD.
U- and V-shaped TLCGD:
Plane TLCGD
ideal to suppress horizontal and coupled bending
torsional vibrations of civil engineering structures.
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