Corrugation of Steel Pipes, a material mechanistic approach
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Master Thesis Corrugation of Steel Pipes, a material mechanistic approach This project is planned to start in 2019 If you are interested or need more information, please contact: [email protected] [email protected] Tetra Pak ® is a world leading food processing and packaging solutions company. Working closely with our customers and suppliers, we provide safe, innovative and environmentally sound products that each day meet the needs of hundreds of millions of people in more than 175 countries around the world. Tetra Pak is committed to make food safe and available, everywhere. Background At Tetra Pak® processing equipment, filling machines and distribution equipment is an integrated unit at our customer sites when producing and manufacturing packages. Furthermore, steel pipes used in the processing equipment in the tubular heat exchanger is an important part to enable high and good quality of the filling products. Therefore, Tetra Pak® needs to continuously gain knowledge and improve the manufacturing of the corrugation in these steel pipes and to further improve the performance. Moreover, creation of more realistic and predictive simulation models is essential for the future to complement the current development and manufacturing process. Furthermore, a computer model is today present to create this corrugation virtually to be used to better understand the different load cases and attributes occurring during the manufacturing process. This virtual manufacturing replica is used to iterate, optimise and improve design loops and functionality of the corrugation process. Therefore, an increased knowledge is needed how the steel pipe material reacts to the prevailing loading scenario in the manufacturing process of cold drawing in a real case situation. Furthermore, today the steel pipe is in the FE-models described in a non-linear elastic-plastic framework with accurate predictions in many industrial applications. However, there are some shortcomings with this approach. The material is most often treated identical independent of what multiaxial stress-state, temperature or strain rate that the material is exerted to. The focus in this Master’s dissertation will be on characterizing microstructure and performing experimental tests on the steel sheets on the continuum mechanical properties. The experimental part will be combined with FEM- simulations trying to replicate the experimental setup to back out the numerical material model parameters. Figure 1. Tetra Pak® Tubular Heat Exchanger with the corrugated steel pipe and associated FEM-model https://www.tetrapak.com/processing/heat-exchangers/tetra-pak-tubular-heat-exchanger The master thesis is intended for two students and is divided into the following steps 1. Literature study about steel sheet production and steel alloy material in general 2. Propose experimental methods for characterizing the mechanical properties necessary to calibrate suitable material models in Abaqus 3. Perform experimental tests on microstructure and mechanical properties of steel pipe material to characterize the structure and material behavior 4. Determine the local deformation/strain with appropriate measurement technique for instance DIC 5. Calibrate the most suitable model in a virtual tensile test in Abaqus 6. Analyze and evaluate the performance of the calibrated model All steps shall be documented in a written report. The work with the report shall be done continuously throughout the thesis.
Transcript of Corrugation of Steel Pipes, a material mechanistic approach
MasterThesisCorrugationofSteelPipes,amaterialmechanisticapproach
This project is planned to start in 2019 If you are interested or need more information, please contact:
[email protected] [email protected]
Tetra Pak® is a world leading food processing and packaging solutions company. Working closely with our customers and suppliers, we provide safe, innovative and environmentally sound products that each day meet the needs of hundreds of millions of people in more than 175 countries around the
world. Tetra Pak is committed to make food safe and available, everywhere.
Background At Tetra Pak® processing equipment, filling machines and distribution equipment is an integrated unit at our
customer sites when producing and manufacturing packages. Furthermore, steel pipes used in the processing equipment in the tubular heat exchanger is an important part to enable high and good quality of the filling products. Therefore, Tetra Pak® needs to continuously gain knowledge and improve the manufacturing of the corrugation in these steel pipes and to further improve the performance. Moreover, creation of more realistic and predictive simulation models is essential for the future to complement the current development and manufacturing process. Furthermore, a computer model is today present to create this corrugation virtually to be used to better understand the different load cases and attributes occurring during the manufacturing process. This virtual manufacturing replica is used to iterate, optimise and improve design loops and functionality of the corrugation process. Therefore, an increased knowledge is needed how the steel pipe material reacts to the prevailing loading scenario in the manufacturing process of cold drawing in a real case situation. Furthermore, today the steel pipe is in the FE-models described in a non-linear elastic-plastic framework with accurate predictions in many industrial applications. However, there are some shortcomings with this approach. The material is most often treated identical independent of what multiaxial stress-state, temperature or strain rate that the material is exerted to. The focus in this Master’s dissertation will be on characterizing microstructure and performing experimental tests on the steel sheets on the continuum mechanical properties. The experimental part will be combined with FEM-simulations trying to replicate the experimental setup to back out the numerical material model parameters.
Figure 1. Tetra Pak® Tubular Heat Exchanger with the corrugated steel pipe and associated FEM-model https://www.tetrapak.com/processing/heat-exchangers/tetra-pak-tubular-heat-exchanger
The master thesis is intended for two students and is divided into the following steps
1. Literature study about steel sheet production and steel alloy material in general 2. Propose experimental methods for characterizing the mechanical properties necessary to calibrate
suitable material models in Abaqus 3. Perform experimental tests on microstructure and mechanical properties of steel pipe material to
characterize the structure and material behavior 4. Determine the local deformation/strain with appropriate measurement technique for instance DIC 5. Calibrate the most suitable model in a virtual tensile test in Abaqus 6. Analyze and evaluate the performance of the calibrated model
All steps shall be documented in a written report. The work with the report shall be done continuously throughout the thesis.
