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Konstruktionsanalys av högvakuumenhet vid händelse av dammexplosion

Nilsson, Fredrik (2010) MMK820 20101
Product Development
Abstract
This Master Thesis treats the problems involved with a dust explosion inside a filter unit. The project is a cooperation between AB Ph. Nederman in Helsingborg and the Mechanical Design Department of Design Sciences LTH, Lund. The Master thesis was carried out from December 2009 to April 2010.
The initial phase of the project involves studies of the phenomena dust explosions, standards and regulations. Both the European SS-EN 14491:2006 and US NFPA 68 standard were studied to obtain the reaction forces, pressures and the placement of the reaction force.
The main part of the project was focused on structural analysis using FEM. The first part involved simulations and analysis of the structure when it is exposed to both a pressure rise and... (More)
This Master Thesis treats the problems involved with a dust explosion inside a filter unit. The project is a cooperation between AB Ph. Nederman in Helsingborg and the Mechanical Design Department of Design Sciences LTH, Lund. The Master thesis was carried out from December 2009 to April 2010.
The initial phase of the project involves studies of the phenomena dust explosions, standards and regulations. Both the European SS-EN 14491:2006 and US NFPA 68 standard were studied to obtain the reaction forces, pressures and the placement of the reaction force.
The main part of the project was focused on structural analysis using FEM. The first part involved simulations and analysis of the structure when it is exposed to both a pressure rise and a reaction force due to the venting of the explosions gases through an explosion panel.
The dust bin with its attachment has been identified as a potential weakness in the event of pressure rise. Therefore a separate analysis was performed on the dust bin and its components. In the simulation different pressures were applied to the bottom of the container to investigate when total failure occurs.
For the computer simulations 3D models were imported into Pro/Engineer Wildfire where geometric simplifications were made. All the structural analysis and simula-tions were performed in the finite element program ANSYS Workbench 11.0.
The last part of this master thesis involved an indicative lab test where a real filter unit was statically pressurized. The goal with the test was identify weaknesses in the structure and discover leakages. (Less)
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author
Nilsson, Fredrik
supervisor
organization
course
MMK820 20101
year
type
H2 - Master's Degree (Two Years)
subject
keywords
Venting, Dust explosion, Master Thesis, The Finite Element Method, Structural analysis
language
Swedish
id
1736511
date added to LUP
2010-12-06 13:43:38
date last changed
2010-12-06 14:03:18
@misc{1736511,
  abstract     = {This Master Thesis treats the problems involved with a dust explosion inside a filter unit. The project is a cooperation between AB Ph. Nederman in Helsingborg and the Mechanical Design Department of Design Sciences LTH, Lund. The Master thesis was carried out from December 2009 to April 2010.
The initial phase of the project involves studies of the phenomena dust explosions, standards and regulations. Both the European SS-EN 14491:2006 and US NFPA 68 standard were studied to obtain the reaction forces, pressures and the placement of the reaction force.
The main part of the project was focused on structural analysis using FEM. The first part involved simulations and analysis of the structure when it is exposed to both a pressure rise and a reaction force due to the venting of the explosions gases through an explosion panel.
The dust bin with its attachment has been identified as a potential weakness in the event of pressure rise. Therefore a separate analysis was performed on the dust bin and its components. In the simulation different pressures were applied to the bottom of the container to investigate when total failure occurs.
For the computer simulations 3D models were imported into Pro/Engineer Wildfire where geometric simplifications were made. All the structural analysis and simula-tions were performed in the finite element program ANSYS Workbench 11.0.
The last part of this master thesis involved an indicative lab test where a real filter unit was statically pressurized. The goal with the test was identify weaknesses in the structure and discover leakages.},
  author       = {Nilsson, Fredrik},
  keyword      = {Venting,Dust explosion,Master Thesis,The Finite Element Method,Structural analysis},
  language     = {swe},
  note         = {Student Paper},
  title        = {Konstruktionsanalys av högvakuumenhet vid händelse av dammexplosion},
  year         = {2010},
}