On the Rheological Behaviour of the soil in the Artificial Compacting Process
Date
2008Author
Oproescu, Gheorghe
Debeleac, Carmen
Leopa, Adrian
Năstac, Silviu-Marian
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The artificial compacting of the soil is made mostly with machines with
dynamical action such as vibrating plate, vibrating beater or vibrating
drum. Their effect on the compacting process of the soil has two origins:
the own weight of the machine and the unidirectional vibrating force
generated from a specific device. A centrifugal vibrating generator is the
frequently used device. In order to develop equipments with high
performance, namely computer-aided machines, machines with active
adaptation or alike, the physical and mathematical modeling of the soil
behaviours are necessary. The previously developed models, based on the
linear elastical behaviour of the soil and certain tricks used in the
presentment of the soil properties in order to make easy an analytical
solution of the movement equations, try to adapt a linear model to a
nonlinear and nonelastical medium. This fact brings about very large
approximations of the reality.Our work shows a new model of the soil,
based on more properties such as elasticity, viscosity, plasticity and dry
friction. This model is excited by a vibrating machine and the result
concerning displacement, speed, acceleration or consumed power is
possible to be obtained on computer. The modification of the properties of
the compacted soil modifies the result of the model and therefore the
compaction degree can be modeled by modifying the result of the developed
model
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- 2008 fascicula14 [17]