Namanact 150616123113 Lva1 App6892 PDF
Namanact 150616123113 Lva1 App6892 PDF
Namanact 150616123113 Lva1 App6892 PDF
SYSTEM
Prepared by:-
-Naman Kantesaria(120280106039)
-Jay Patel(120280106037)
-Vipul Chavda(120280106063)
INTRODUCTION
Damping ratio = 2 to 3%
Advantages:
- Simple to manufacture
- Easy to model
- Response not strongly sensitive to
rate of loading, history of loading,
temperature, and aging.
Disadvantage:
-Need supplemental damping system
HIGH-DAMPING NATURAL RUBBER
BEARINGS
• Damping increased by adding extra-fine carbon black, oils or resins,
and other proprietary fillers
• Friction Dampers
• Visco-elastic Dampers
here friction
between sliding faces
is used to dissipate
energy
VISCO-ELASTIC DAMPERS
Visco-elastic (VE)
dampers utilize high
damping from VE
materials to dissipate
energy through shear
deformation.
Such materials include
rubber, polymers, and
glassy substances.
VISCOUS FLUID DAMPERS
A viscous fluid damper
consists of a hollow
cylinder filled with a
fluid. As the damper
piston rod and piston
head are stroked, The
fluid flows at high
velocities , resulting in
the development of
friction
TUNED MASS DAMPERS AND TUNED
LIQUID DAMPERS
A mass that is connected to a
structure by a spring and a
damping element without any
other support,in order to
reduce vibration of the
structure
Tuned liquid dampers are similar
to tuned mass dampers except
that the mass-spring-damper
system is replaced by the
container filled with fluid
Tuned mass dampers
Activetendon control
systems consist of a
set of pre-stressed
tendons whose
tension is controlled
by electro-hydraulic
servomechanisms
SEMI-ACTIVE CONTROL SYSTEMS