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% &lthough 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

8/18/2019 Methodology for Non-linear Contact FEA for DPCV

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suse#uent component%