Hi - I have a basic question on the contact pressure plots
I am performing a seat tightness study in a pressure relief valve
that has internal pressure acting on two components in contact.
This pressure is biased against a spring force. My objective is to
find the max internal pressure achievable without leakage. I study
the contact pressure at the seat as the metric that determines seat
tightness. If contact pressure exceeds internal pressure, the valve
After performing a no-penetration contact analysis, when I analyze
the results, I look at the contact pressure in 2 ways
1. I get the contact force value and divide it by the average
contact area (which is derived from the contact pressure plot). The
contact force is equal and opposite on the contacting faces.
2. I get the average contact pressure value from the source or the
target face (whichever is minimum, mostly the target face).
These two methods do not agree with each other, and in some cases
vastly different. Which one is the more accurate method? Or is
there a better method to do the analysis. I have had success from
the first method (proven on the field).