FE Modeling in Hot Rolling of Steel Sections
(Funded by DFG, the German Research Association)
Overall work plan
The work can be divided
into two steps:
-
Direct application of the developed finite element
model. The company has a set of finite element model developed by the company
and relevant teams after 5 years of research and development. The research and
development is funded by the German Research Association. The earliest user of
this achievement is German SMS Demark (now Demag) company. This model is a deep
development on the finite element source program Marc. The contents of the model
are shown in the appendix, including a complete set of technologies, such as
modeling process, algorithm selection, physical data and boundary conditions,
optimization methods, etc. This model is extremely accurate, as well as the
verification process shown in the appendix. For products whose deformation is
difficult to determine and pass design is difficult to carry out, this finite
element model can be directly applied to determine the deformation mode of steel
to guide production. It has been arranged to use the finite element source
program of an University of technology, Beijing University of science and
technology or Taiyuan University of science and technology. It would be better
if the customer bought one by himself. See Annex I for details: "Introduction to
the technology of applying finite element simulation to optimize the pass design
of section steel".
-
Gradually combine the results of finite element
application into a pass design software package to optimize the pass design
process. Step by step to form a pass design software package suitable for the
actual situation of the factory. Because of the large amount of calculation, the
speed of finite element software is difficult to reach the level of pass design
software, and can not replace the pass design software package. The most basic
function of this pass design software package (the first stage) is to add a set
of deformation logic (algorithm) to the existing pass design process, develop
self-study and optimization of the model, and increase the accuracy of model
prediction. The second stage is to apply a simplified finite element model
developed earlier to the pass design software package, combined with self-study
of the model. This simplified model only needs 0.5% of the complete model, that
is, one hundredth of the operation time. The biggest advantage of this
combination is that it can combine the feedback optimization concept in modern
high-quality automation software with finite element, and improve the quality of
section steel pass design to a more accurate, fast and efficient level. In the
third stage, the design quality is further improved, and the developed complete
finite element model is applied to verify whether the design results are
optimized. See Annex II for details: "technical introduction of combining finite
element simulation with pass design software package".
In addition, this paper is
also attached with some relevant papers, charts and project lists of research
results. For details, see Annex III: "Application of finite element in section
steel rolling (attached research data)", which is the beginning of the
discussion at the technical level. Our experts will be in Nanjing from mid May
to mid June. At that time, we hope to visit your factory for more in-depth
discussion and introduce more relevant charts and data.
Therefore, we also hope that
your company can provide some specific information so that our experts can put
forward more accurate suggestions for discussion before visiting, such as: (1)
pass series; (2) Difficult problems on site; And (3) whether there is AutoCAD or
finite element software, etc.
<To be continued>
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