methodology for non-linear contact fea for dpcv
TRANSCRIPT
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8/18/2019 Methodology for Non-linear Contact FEA for DPCV
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Methodology for carrying out a non-linear (contact non-linearity) nite
element analysis for dual plate Check valve
Considerations done during 3D model creation:
• To reduce numer of elements to solve a non-linear analysis!
the model has een cut "here the loads are not re#uired to
calculate
• The radius at each location is removed to reduce mesh
con$unction% The computation time is reduced drastically due
to this% <hough stress concentration at corners might e
visile! this can e ignored at surface or local areas%
Considerations done during contact denition:
• To depict the actual oundary condition et"een the
components in contact! frictional contact ("herever
applicale) is considered et"een the components% Co-
e'cient of friction taken here is % due to high
computational time% The more the value! the more "ill e the
computational time%
*esults and Discussion
• +rom the aove analysis it is clear that the type of contact
plays an important role in the result plots% Thus it is important
to select the type of contact depending on actual condition
and depict the actual realistic condition to get the results
closed to practical conditions%
• The results otained from the default settings sho"s
ma,imum stress values much less than the allo"ale limits
"hile the ma,imum induced value is much larger than the
allo"ale stress value%
• The results otained from the non-linear analysis (contacts)
sho" the ma,imum stress value close to induced stress value
and thus it is transferring stress from one location to the
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8/18/2019 Methodology for Non-linear Contact FEA for DPCV
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suse#uent component%