# Output Messages

```
CYCLE TIME TIME-STEP ELEMENT ERROR I-ENERGY K-ENERGY T K-ENERGY R EXT-W
-------
2 2.380 0.4802 SHELL 0.0% 5.117 0.000 0.000 5.117
--SUPPLEMENTARY CONTACT STIFFNESS MATRIX IS CREATED--
WITH DIM. : ND = 141 NZ = 1050 NB_MAX = 15
NL_ITERATION= 0 INITIAL RESIDUAL NORM= 0.5913E+01 0.4613E+04 0.1600E+05
--STIFFNESS MATRIX IS REFORMED --
--SUPPLEMENTARY CONTACT STIFFNESS MATRIX IS CREATED--
WITH DIM. : ND = 150 NZ = 1059 NB_MAX = 15
NL_ITERATION= 1 RELATIVE RESIDUAL NORM= 0.1000E+01 0.8593E-01 0.5005E-01
--SUPPLEMENTARY CONTACT STIFFNESS MATRIX IS CREATED--
WITH DIM. : ND = 156 NZ = 1101 NB_MAX = 15
CONVERGED WITH 2 ITERATIONS, |du|/|u|,|r|/|r0|,|dE|/|E|= 0.5915 0.4747E-01 0.1166
```

Each iteration contains a printout of the normalized (L2 Norm) initial values (iteration
zero) or relative one of displacement, force residual and energy. So
`|du|/|u|`

is relative residual in displacement,
`|r|/|r0|`

is relative residual in force and
`|dE|/|E|`

is relative residual in energy.## Stiffness Matrix Setup

*--------- STIFFNESS MATRIX SETUP ---------* SYMBOLIC DIM : ND = 164202 NZ = 6047160 NB_MAX = 96 FINAL DIM : ND = 154605 NZ = 5652417 NB_MAX = 96

`ND`

- Dimension of the stiffness matrix (number of DOFs)
`NZ`

- Number of non-zero values of the strict triangular matrix (only
`ND+NZ`

values are stored due to the symmetry of matrix) `NB_MAX`

- Maximum number of connected nodes in the model

Radioss eliminates all dependent nodes (this process is called
'condensation') before resolution, and so the `SYMBOLIC`

and
`FINAL`

dimensions correspond respectively to the matrix dimension before and
after condensation.

--SUPPLEMENTARY CONTACT STIFFNESS MATRIX IS CREATED-- WITH DIM. : ND = 42 NZ = 42 NB_MAX = 16

- CPU information If the keyword /MON/ON is defined in the Radioss Engine input file (_0001.rad), some detailed information regarding CPU processing time information for the implicit scheme is printed in the .out file:
`#PROC [K]SETUP [M]SETUP IMPL.SOLV IMPL.TOTAL 1 .2484E+01 .1528E+02 .6742E+02 .8520E+02 #PROC CONT.SORT CONT. F ELEMENT MAT KIN.COND. INTEGR. I/O TASK0 ASSEMB. RESOL 1 .0000E+00 .0000E+00 .1875 .3125E-01 .0000 .0000E+00 .2188 .2188 .0000 .8561E+02 ---------- ELAPSED TIME : 89.32 s`

- $\left[\text{K}\right]$
- Main stiffness matrix
- $\left[\text{M}\right]$
- Pre-conditioning matrix (if iterative solver is used)
`IMPL.SOLV`

- For the resolution of {x}=[K]-1{b}

The numerical values represent time.

## Output Solving for each Iteration (/IMPL/SOLV and /IMPL/NONLIN/SOLVINFO)

- Filename_implicit.info
- For largest residuals (force and moment), largest displacement and rotation increments and largest corrections at each iteration and each increment.
- Filename_implicit.hist
- Contains all data for plotting purposes in Altair Simulation.
- Filename_implicit.tpl
- A
`tpl`

script for plotting in Altair Simulation the data from .hist file.