extrawelt
Mechanical
- Sep 10, 2011
- 1
Hello everyone,
I'm about to write a thesis on a simulation problem involving contact in Abaqus/Standard.
The manual states, that for a node-to-surface discretization the tie coefficients will be set equal to the coefficients of the interpolation function at the point where the slave node projects onto the master surface. This means, that multiple master nodes have to be used. Check! (so far). The illustration given in the manual was very helpful.
A surface-to-surface discretization "enforces constraints in an average sense over a finite region, rather at discrete points as in the traditional node-to-surface approach". This means, that there is obviously no such thing like a projection point formulated in this case...
1) How is this "finite region" determined?
2) According to the manual, both discretization methods formulate constraints between one slave node and multiple master nodes.
"[...]however, a fundamental difference is that each surface-based tie constraint involves only one slave node (and multiple master nodes), whereas each surface-to-surface contact constraint involves multiple slave nodes."
Frankly, what does the first "surface" in "surface-to-surface" stand for than?
Best regards and thanks in advance!
I'm about to write a thesis on a simulation problem involving contact in Abaqus/Standard.
The manual states, that for a node-to-surface discretization the tie coefficients will be set equal to the coefficients of the interpolation function at the point where the slave node projects onto the master surface. This means, that multiple master nodes have to be used. Check! (so far). The illustration given in the manual was very helpful.
A surface-to-surface discretization "enforces constraints in an average sense over a finite region, rather at discrete points as in the traditional node-to-surface approach". This means, that there is obviously no such thing like a projection point formulated in this case...
1) How is this "finite region" determined?
2) According to the manual, both discretization methods formulate constraints between one slave node and multiple master nodes.
"[...]however, a fundamental difference is that each surface-based tie constraint involves only one slave node (and multiple master nodes), whereas each surface-to-surface contact constraint involves multiple slave nodes."
Frankly, what does the first "surface" in "surface-to-surface" stand for than?
Best regards and thanks in advance!