en:ref:name:il
Table of Contents
name.iL
Program
HPLS
Format
; program control IP KMET KOUT NSUBI NITER NINT KTPR RP UTOL RTOL XTOL PENAL
; end of input data EN EN
Annotations
| $\mathtt{KMET}$ | The key of the solution method. | |
|---|---|---|
| $=1$ | modified Newton-Raphson | |
| $=2$ | BFGS (default) | |
| $\mathtt{KOUT}$ | The key of the output to the binary file name.PLS. |
|
| $=0$ | only check the input data | |
| $=1$ | after each load case | |
| $=2$ | after each cycle | |
| $=3$ | only the final solution | |
| $\mathtt{NSUBI}$ | The subincrementation of load cases. The default value is $1.$ | |
| $\mathtt{NITER}$ | The maximum number of iterations. The default value is $10.$ | |
| $\mathtt{NINT}$ | The division of the integration step. The default value is $10.$ | |
| $\mathtt{KTPR}$ | The key of test prints. | |
| $=0$ | none | |
| $=1$ | computation trace (recommended) | |
| $=2$ | trace + displacement vector after each iteration | |
| $=3$ | trace + reaction force vector | |
| $\mathtt{UTOL}$ | The convergence criterion $||\Delta\mathbf{u}^{(i)}||<\mathtt{UTOL}\,||\mathbf{u}^{(i)}||.$ The default value is $10^{-3}.$ | |
| $\mathtt{RTOL}$ | The convergence criterion $||\mathbf{R}^{(i)}||<\mathtt{RTOL}\,||\mathbf{R}^{(0)}||.$ The default value is $10^{-3}.$ | |
| $\mathtt{XTOL}$ | The convergence criterion $\sqrt{\mathtt{LSOL}}\max|\mathbf{R}^{(i)}|<\mathtt{XTOL}\,||\mathbf{R}^{(0)}||.$ The default value is $10^{-2}.$ | |
| $\mathtt{PENAL}$ | The spring stiffness for contact problems $[\text{N}/\text{m}^3].$ | |
Note
The program features an option to restart in the case convergence is not achieved in $\mathtt{NITER}$ iterations. For the restart, the program is just run again with the same (or modified) input data.