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FE-analysis of a Stationary Waste Compactor

Juhlin, Rasmus and Lindh, Johannes (2006)
Product Development
Abstract
The costs for producing machines have increased a lot in the latest years. For Presona
this has meant that production costs for their main waste compactor needed to be cut
in order to keep the compactor in their production line. The waste compactor was
initially developed sometime in the 1960s when the price for construction materials
and assembly allowed Presona to develop the compactor using a trial and error
method where it is better to use bigger dimensions in the construction to make sure
that no failures occur due to under dimensioning.
This master thesis is a part of a bigger project that has involved designers, engineers
and economists from Lund Institute of Technology. Our part of the project has been
to support the rest... (More)
The costs for producing machines have increased a lot in the latest years. For Presona
this has meant that production costs for their main waste compactor needed to be cut
in order to keep the compactor in their production line. The waste compactor was
initially developed sometime in the 1960s when the price for construction materials
and assembly allowed Presona to develop the compactor using a trial and error
method where it is better to use bigger dimensions in the construction to make sure
that no failures occur due to under dimensioning.
This master thesis is a part of a bigger project that has involved designers, engineers
and economists from Lund Institute of Technology. Our part of the project has been
to support the rest of the members in the group with finite element simulations of the
compactor.
At first the compactor was analyzed using the finite element method. To evaluate the
accuracy of the analyses strain gages were used to measure the strains at selected
points. The results from the strain gage measurements were then compared to the
calculated strains in the simulations. The calculated strains were estimated to be valid
and the results from the simulations together with suggestions of design changes
where handed over to the rest of the team.
With the analysis in hand it was decided that in order to cut the production costs to
the desired level a complete redesign was needed to be done. In this redesign modern
techniques were used to make the new compactor as cost efficient and easy to
assemble as possible.
The new design of the compactor was tested and evaluated by finite element analyses
and it showed that the new compactor should have no problem handling the stresses.
Many load cases were simulated to make sure the compactor could endure the most
common situations faced during normal operation. Due to lack of time most welds in
the compactor was not evaluated and this needs to be done before the project can go
any further. (Less)
Please use this url to cite or link to this publication:
author
Juhlin, Rasmus and Lindh, Johannes
supervisor
organization
year
type
H2 - Master's Degree (Two Years)
subject
language
English
id
1514842
date added to LUP
2009-12-07 15:30:24
date last changed
2010-02-01 14:40:06
@misc{1514842,
  abstract     = {The costs for producing machines have increased a lot in the latest years. For Presona
this has meant that production costs for their main waste compactor needed to be cut
in order to keep the compactor in their production line. The waste compactor was
initially developed sometime in the 1960s when the price for construction materials
and assembly allowed Presona to develop the compactor using a trial and error
method where it is better to use bigger dimensions in the construction to make sure
that no failures occur due to under dimensioning.
This master thesis is a part of a bigger project that has involved designers, engineers
and economists from Lund Institute of Technology. Our part of the project has been
to support the rest of the members in the group with finite element simulations of the
compactor.
At first the compactor was analyzed using the finite element method. To evaluate the
accuracy of the analyses strain gages were used to measure the strains at selected
points. The results from the strain gage measurements were then compared to the
calculated strains in the simulations. The calculated strains were estimated to be valid
and the results from the simulations together with suggestions of design changes
where handed over to the rest of the team.
With the analysis in hand it was decided that in order to cut the production costs to
the desired level a complete redesign was needed to be done. In this redesign modern
techniques were used to make the new compactor as cost efficient and easy to
assemble as possible.
The new design of the compactor was tested and evaluated by finite element analyses
and it showed that the new compactor should have no problem handling the stresses.
Many load cases were simulated to make sure the compactor could endure the most
common situations faced during normal operation. Due to lack of time most welds in
the compactor was not evaluated and this needs to be done before the project can go
any further.},
  author       = {Juhlin, Rasmus and Lindh, Johannes},
  language     = {eng},
  note         = {Student Paper},
  title        = {FE-analysis of a Stationary Waste Compactor},
  year         = {2006},
}