08-10-2016, 11:12 AM
[attachment=72718]
Abstract
The rapid growth of technology in recent decades has led to the reduction of cost and weight of materials. The
modified system has become popular in industry as well as in research. As a result, this there are reduction in
accident and safety has increased. Many systems used in industries use knuckle joint which is combination of
two materials: cast iron and stainless steel. Here we are proposing the modification of one of the material that is
changing cast iron into a composite polymer material. The proposed system has many advantages over other
system such as making the device, simpler and having maximum safety and is ecofriendly.
The analysis of the system proves all the above features mention above. The reason for considering polymer is
that property of polymer is mostly similar to the property of metal. Composite polymers are characterized by a
high flexibility material. The revolutionary evolution in technologies in last year allowed reducing stress and
strain.
In the present work ANSYS 13 has been used for analysis of knuckle joint with modified material and varying
loads.
INTRODUCTION
A knuckle joint is used to connect two rods
which are under the action of tensile loads whereas, if
the joint is guided, compressive load may be
supported by rods. A knuckle joint can be easily
disconnected when required. Its uses are link of a
cycle chain, tie road joint for roof truss, valve rod
joint with eccentric rod, pump rod joint, tension link
in bridge structure and lever and rod connection of
various types [7].
In knuckle join, one end of one of the rods is
made into an eye and the end of the other rod is
formed into a fork with an eye in each of the fork leg.
The knuckle pin passes through both the eye hole and
the fork holes and may be secured by means of a
collar and taper pin or spilt pin. The knuckle pin may
be prevented from rotating in the fork by means of a
small stop, pin, peg, or snug. In order to get a better
quality of joint, the sides of the fork and eye are
machined, the hole is accurately drilled and pin
turned. The material used for the joint may be steel or
wrought iron [10].
Knuckle joints may be cast or fabricated or
forged. In the knuckle joint illustrated, the rods are
integral with the eye and fork. In fig 1
A knuckle joint is a pin joint used to fasten two
circular rods. [3]
In this joint, one end of the rod is
formed into an eye and the other into a fork. For
making the joint, the eye end of the rod is aligned
into the fork end of the other and held in position by
means of a collar and a taper pin. Once the joint is made, the rods are free to swivel about the cylindrical
pin. Knuckle joints are used in suspension links, air
brake arrangement of locomotives, etc.
Knuckle joints are made up of cast iron and
stainless steel. With the advancements in the field of
polymers, Teflon can be used for knuckle joints also.
The results obtained from simulation proves that for
same loads, total deformation, stress and strain are
much less in comparison to cast iron.
II. GEOMETRIC MODELING AND
BOUNDARY CONDITIONS
The numerical flow simulation needs input of 2D
or 3D geometry of domain under consideration. The
domain is divided into small elements called mesh.
Numerical methods are used for discretisation of
governing equations over an element
Abstract
The rapid growth of technology in recent decades has led to the reduction of cost and weight of materials. The
modified system has become popular in industry as well as in research. As a result, this there are reduction in
accident and safety has increased. Many systems used in industries use knuckle joint which is combination of
two materials: cast iron and stainless steel. Here we are proposing the modification of one of the material that is
changing cast iron into a composite polymer material. The proposed system has many advantages over other
system such as making the device, simpler and having maximum safety and is ecofriendly.
The analysis of the system proves all the above features mention above. The reason for considering polymer is
that property of polymer is mostly similar to the property of metal. Composite polymers are characterized by a
high flexibility material. The revolutionary evolution in technologies in last year allowed reducing stress and
strain.
In the present work ANSYS 13 has been used for analysis of knuckle joint with modified material and varying
loads.
INTRODUCTION
A knuckle joint is used to connect two rods
which are under the action of tensile loads whereas, if
the joint is guided, compressive load may be
supported by rods. A knuckle joint can be easily
disconnected when required. Its uses are link of a
cycle chain, tie road joint for roof truss, valve rod
joint with eccentric rod, pump rod joint, tension link
in bridge structure and lever and rod connection of
various types [7].
In knuckle join, one end of one of the rods is
made into an eye and the end of the other rod is
formed into a fork with an eye in each of the fork leg.
The knuckle pin passes through both the eye hole and
the fork holes and may be secured by means of a
collar and taper pin or spilt pin. The knuckle pin may
be prevented from rotating in the fork by means of a
small stop, pin, peg, or snug. In order to get a better
quality of joint, the sides of the fork and eye are
machined, the hole is accurately drilled and pin
turned. The material used for the joint may be steel or
wrought iron [10].
Knuckle joints may be cast or fabricated or
forged. In the knuckle joint illustrated, the rods are
integral with the eye and fork. In fig 1
A knuckle joint is a pin joint used to fasten two
circular rods. [3]
In this joint, one end of the rod is
formed into an eye and the other into a fork. For
making the joint, the eye end of the rod is aligned
into the fork end of the other and held in position by
means of a collar and a taper pin. Once the joint is made, the rods are free to swivel about the cylindrical
pin. Knuckle joints are used in suspension links, air
brake arrangement of locomotives, etc.
Knuckle joints are made up of cast iron and
stainless steel. With the advancements in the field of
polymers, Teflon can be used for knuckle joints also.
The results obtained from simulation proves that for
same loads, total deformation, stress and strain are
much less in comparison to cast iron.
II. GEOMETRIC MODELING AND
BOUNDARY CONDITIONS
The numerical flow simulation needs input of 2D
or 3D geometry of domain under consideration. The
domain is divided into small elements called mesh.
Numerical methods are used for discretisation of
governing equations over an element