Advanced Preprocessing for Weld Fatigue Analysis
Dr. Philipp Heinzl, Thomas Grausgruber, Siemens
Transportation
In railway rolling stock engineering weld fatigue analysis
is a comprehensive and computationally intensive
task because of relatively large finite element models and
numerous weld
seams and load cases to be considered.
At Siemens Transportation Systems mainly in-house
codes especially developed for the numerical
assessment of stresses along weld seams are
applied. Although this stress
assessment is done in a computationally efficient
manner, the laborious and time-consuming
tasks of preprocessing and
documenting were in the past left to the
respective engineer with only restricted possibilities
for automation
and graphical
user interaction.
In this presentation a customizing approach
is presented how to incorporate additional
data for weld analyses, including weld
definitions and input of parameters required
for weld stress evaluation, into the HyperMesh
database. Due to Altair HyperMesh's extensive
customizing possibilities
automated generation of input data for
an existing weld analyzer is made possible,
and customer specific extensions of the
graphical user interface may easily be
included. Accordingly, the necessary preprocessing
and documenting efforts are reduced
considerably, while even increasing the
quality by providing virtually intuitive graphical
user support.
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