Notesale: Turn your study into money

Document Preview

Extracts from the notes are below, to see the PDF you'll receive please use the links above

---

FEM ANALYSIS OF SPRING VALVE

RICHARD PANG WUI WING
MOHAMAD AMIRUL FAHMI BIN AB HALIM

MA16035
MA16032

PROJECT REPORT SUBMITTED IN PARTIAL FULFILMENT OF
THE REQUIREMENTS FOR THE COURSE OF

FINITE ELEMENT METHOD
Submitted to
DR
...
4
Abstract
...
6
1
...
6
Figure 1
...
1 : Solidwork 2016 design of Spring Valve…………………………
...
2 Introduction………………………………………………………………………
...
3 Applications………………………………………………………………………
...
8
2
...
1
...
9
Table 2
...
2 : Material Composition………………………
...
2 project background…………………………………………
...
10
Figure 3
...
1 : Solidworks assembly model…………………………………
...
1
...
10
Fem modeling………………………………………………………………………………
...
1
...
11
Figure 4
...
2 : The valve displacement…………………………………………
...
1
...
12
Figure 4
...
4 : The value of the stress reading………………………………
...
14
2|Page

Conclusions……………………………………………………………………
...
16

3|Page

ACKNOWLEDGEMENTS

In performing our assignment, we had to take the help and guideline of some respected
persons, who deserve our greatest gratitude
...
We would like to show our gratitude to Dr
...
We would also like to expand our
deepest gratitude to all those who have directly and indirectly guided us in writing this assignment
...

We thank all the people for their help directly and indirectly to complete our assignment
...
It
is based on the idea of dividing a complicated object into small and manageable pieces
...
The enormous advances have been made in the
application of the FEM to solve complicated engineering problems
...

In this report a study on spring valve of structural steel is presented
...

Spring valve play an important role in controlling the breathing in internal combustion
engines
...
Among all of them, the spring valve is mainly used to lifting the weight of
the valve and overcoming friction on the valve shaft when the valve closes Creating enough
friction, or drag, to keep the valve train and valve following the camshaft profile accurately, by
always providing (slightly) greater force than the inertial force of the accelerated mass of the valve
...

Numerical analysis of the stress levels in the spring valve
...
FEM analysis was performed for the case if the spring valve can
withstand on a certain load
...
The study also shows the level of displacements occurring under load
of the system
...
With the FEM analysis it was possible to determine
the critical zones in the spring valve
...
1 GENERAL REMARKS
Spring valve play an important role in controlling the breathing in internal
combustion engines
...
A typical of example of spring valve as shown
in Fig 1
...
1
...
The
upper part of the spring valve is a rocker arm that hold the spring valve
...
It is to ensure it moves up and down,
when the camshaft move upward the rocker arm will hold the valve so that the spring valve
doesn’t move
...
The spring valve is a symmetrical object
...
2 INTRODUCTION
The purpose of this study was to develop the level of displacements occurring under
maximum load of the system and to determine the critical zones in the spring valve
...
3 APPLICATIONS
The rocker arm moves up and down, so does its opposite side
...
As the lobe rotates away from the
rocker arm the outside drops, the inner end lifts and the valve’s spring closes it
...


7|Page

CHAPTER 2
TECHNICAL DETAILS
2
...
All the member
is made by steel
...

Main Members:
1
...
Designing through it and then convert
it to step in Mechanical Simulation
...
It is to allow the spring to achieve maximum pressing or stress that
it can endure
...

2
...
The valve
component is using to support the spring and using the lock disc to prevent movement of
the spring
...
Tension along the valve is to prevent the spring from moving its original place
...
Contact member
The contact surface between the upper body to ensure it movement, when the force
is applied, the contact surface will also have effect because of the force being applied
...
The contact member is the valve, spring and
the upper part which is the arm
...
1
...
48-0
...
80 -1
...
15min %

Tensile Yield strength

2
...
6*10*8 Pa

Table 2
...
2 : Material Composition
2
...

Loading: The point load of 100N is applied to the arm in Y direction, after that a force is
fix at the bottom of the spring so that the tension of the spring can be analysis
...
The individual components are drawn and stored in part file
...


Figure 3
...
1: Solidworks assembly model

Figure3
...
2 : Mechanical Simulation 2017
10 | P a g e

CHAPTER 4
FEM MODELING

The Mechanical Simulation is used to determine the stress, strains, displacement
and force in the spring valve caused by the load
...

Meshing is applied to the model of spring valve and components
...
Finally, the load is applied, we have observed the behavior of the spring and
analyzed to get the stresses, displacements and strains
...
1
...


Figure 4
...
1 : Meshing

11 | P a g e

The maximum displacement value of the spring valve :

Figure 4
...
2 : The valve displacement

The maximum value and minimum value of strain (von mises) 4
...
2
...
1
...
1
...


12 | P a g e

Figure 4
...
4 : The value of the stress reading

13 | P a g e

CHAPTER 5
RESULT AND DISCUSSION

In FEA approach, we have chosen proper element and meshing is done
...


Force applied: 100N
Displacement:1
...
279109mm/mm
Minimum strain(Von-mises): 1
...
4N/mm*2

As the result show in analysis provide different value of the strain, where it can
withstand until certain value of deformation
...
On each part show different value
through the analysis, the better way to make sure the material is strong is through the
selection of material and the suitable for being use in a engine
...

• The spring valve didn’t break
...

• This project satisfying the product requirement
...
From this, we conclude that the stress and displacement value are
coming closer to each other
...
Written by Marlan Davis on November 1, 2010
http://www
...
com/articles/hrdp-1011-what-you-need-to-know-aboutvalvesprings/
2
...
onallcylinders
...
FEM for Springs edited by Masayoshi Shimoseki, Toshio Hamano, Toshiyuki
Imaizumi
https://books
...
com
...
Y
...
Yoshimoto, Engineering analysis with ANSYS software, 1st ed,
Elsevier Butterworth-Heinemann, 2006
...
5
...
Shigley, C
...
Mischke,” Mechanical engineering Design”, TATA
McGraw-Hill Publishing company limited, New Delhi
...


16 | P a g e



---