Dear FEA user,
I'd like to have your opinion regarding mesh sensitivity study vs sub-modelling.
I've just started doing FEA analysis and AFAIK, it is normal that we run analysis 2 or 3 times with refined mesh
to determine what is the best approximate solution.
on the other hand, I also heard...
Dear ABAQUS user,
I'm trying to cut the analysis result view by using multi cut. the shape is cylinder (attached pic).
I've been trying to use multi cut option from Tools - View Cut - Manager and do many 'plane cut' combinations,
but i couldn't get the slice cut what i want.
Is it possible to...
Dear Abaqus user,
I'd like to simulate pressure penetration feature on ABAQUS based on axisymmetric model.
I made a model consist of seal being compressed by top body and bottom body.
Contact pressure shall be generated after top body move down while bottom body fixed.
Once the seal set, then...
Dear All,
I have a question regarding compressed gas. I'm doing some experiment for testing some seal (see hatch area on sketch below) at 10,000PSI by using nitrogen gas. in this experiment, i accidentally got some different result based on two different situation. you can see my experiment...
Hello Abaqus user,
I want to simulate some mechanism using material AISI 4140 (105,000PSI yield strength). Any idea where/how to find the properties of this steel? I need to put true stress vs plastic strain data under material properties 'plastic' instead of 'elastic' modulus young & poisson...
Dear Abaqus user,
i'm doing some simulation on split ring which pushed by plug with pressure 10,000PSI and hit the housing. i've been creating parts, applying the boundary condition, interaction, mesh control that i could think of.
this is the boundary condition that i put on the system:
1...
Dear ASME experts,
I need some enlightment regarding safety factor (SF) of ASME viii-2 which change from '3' to '2.4'.
Initially, i saw ASME viii-2 2004 edition that refers to ASME ii-D mandatory appendix 2,
which i thought coefficient '3' was mentioned on tensile strength limit St/'3' at...
Dear all,
I'm trying to design packing with HNBR material for wrap around casing hanger wellhead equipment.
I need to check out if the packing wont extrude under 10,000PSI differential pressure after it being compressed.
The limitation that i made is how much axial distance (d) packing can be...
Hi everyone,
I got some calculation sheet that explain how to determine radial stress from rubber material being compressed with axial pressure 'P' (see figure).
As far as I look around, I've never seen such formula like this, as I never dealing with rubber material before.
does anybody can...
Dear folks,
i'd like to ask your opinion.
recently i did some hydrostatic pressure test for wellhead equipment and record it under pressure chart (barton chart).
the graph were taken had a very slightly drop which drive me to think about allowable pressure drop tolerance.
i'm confused about...
Dear folks,
Anybody can share me whats the reason behind '3mm' weld overlay, especially in API6A?
i look around the fact why '3mm' and i heard its related to dilution problem.
but i'm not so sure since i'm not familiar with welding.
does it mention somewhere (i.e. ASME IX), so that API took it...
dear folks,
Is there anyone can share me some api standard/any standard that mention minimum tong space especially for mandrel casing hanger (any size)?
i look at how people use power tong at rig as they need some space for static/rotating tong (lug jaw) to grip the hanger.
as far as my...
Dear folks,
I'm doing analysis for torque bolt requirement as mention on API 6A Annex D by using the formula from ASME VIII div2 clause 4.16.6 for design bolt load
As it come across to the gasket, ASME differentiates between self energize gasket and non-self energize.
I look around from other...
Dear folks,
anyone knows how to calculate shear area on taper thread? i'm trying to calculate shear capacity for taper thread.
so far i've only seen shear area determination for straight thread, not taper.
any idea?
thank in advance
yudhi
Dear all,
anybody can tell me why we have to choose zinc coating on alloy steel (eg: 4130) and copper coating for stainless steel (eg: 410)?
i'm not so familiar with coating. though most of literature mentions this typical coating for corrosion inhibitor purpose,
but so far i havent had seen...
Hello everyone,
is there anyone know what is the 410SS DBTT value?
as i look at 4100SS mill cert to be used as a wellhead equipment (shall comply both API6A and NACE),
the material vendor guy said to me that 410SS cannot applicable to 'K' operating range (-75ºF), the min was only to 'P'...
everyone,
Does anyone know what is the difference between adding inlay on 4130 body with SS316 or INC625?
so far i've seen these two inlays being used on wellhead equipment. but i dont know what's the advantage on one with respect to another. from what perspective we could say it's better...
hello everyone.
I just joined this Eng tips.
hope i got some clue for my question. i found some material vendor catalogue mention AISI 4130 has lrs 2" based on API6A and 4" based on NACE MR0175. so far as i look at API6A and NACE MR0175, it doesn't mention about limiting ruling section (lrs)...
