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Finite Element Analysis in Structural Mechanics

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en:ref:name:ip

Table of Contents

name.iP

Program

HPP2 HPP3

Format

; program control and load case sequence IP KREST NLC NCYC KMOD KCRP KLARG KCNT KTPR KURHS 0 $L_1$ $L_2$ $\dots$ $L_\mathtt{NLC}$ RP 10*0 $t_1$ $t_2$ $\dots$ $t_\mathtt{NLC}$

; load case sequence (alternate input) LC $L_1$ $t_1$ LC $L_2$ $t_2$ $\vdots$

; end of input data EN EN

Description

$\mathtt{KREST}$The restart key.
$=1$new computation
$=2$additional input of load cases
$\mathtt{NLC}$The number of entries in the load case sequence, $1\le\mathtt{NLC}\le15.$ See the note below about longer sequences.
$\mathtt{NCYC}$The number of cycles. The default value is $1.$
$\mathtt{KMOD}$The plasticity model key.
$=0$elasticity (default)
$=1$von Mises model
$=2$generalized associative model
$=3$generalized non-associative model
$=4$Feigenbaum-Dafalias model
$\mathtt{KCRP}$The creep model key.
$=0$without creep (default)
$=1$Isotropic model
$=2xx$Bina's model
$=2$Norton Model
$=3$Norton-Bailey model
$=4$Time Hardening model
$=5$MPC Project Omega model
$=6$Kloc model
$\mathtt{KLARG}$The geometrical nonlinearity key.
$=0$geometrically linear (default)
$=1$total Lagrangian formulation (large displacements, small strains)
$=2$updated Lagrangian formulation (large displacements, small strains)
$=3$logarithmic formulation (large displacements, large strains) only for elastic problems
$=4$corotational formulation
$=5$Mooney-Rivlin model
$=6$Ogden model
$\mathtt{KCNT}$The contact key.
$=0$without contact (default)
$=1$with contact
$\mathtt{KURHS}$The right-hand side update key. The right-hand side is assembled for the current deformed body configuration.
$=0$not updated (default)
$=1$updated after each iteration
$L_i$The index of the load case corresponding to the $i$-th entry in the load case sequence.
$t_i$The time $[\text{h}]$ corresponding to the $i$-th entry in the load case sequence.
Note
The prerequisites for using $\mathtt{KREST}=2$ are:
i) the nonlinear problem has been solved successfully, i.e., the program HPLS/HDYN has run at least once with $\mathtt{KREST}=1,$
ii) the additionally entered load case sequence corresponds to already processed load cases (if the required load case is not available, it is necessary to enter additional load cases and repeat the whole solution procedure first),
iii) the time $t_1$ must be greater or equal to the time in which the previous solution was ended (this applies to creep problems only).
Note
If the load case sequence is input using LC batches, the values of $\mathtt{NLC},$ $L_i$ and $t_i$ on the IP and RP lines are ignored and it is possible to input up to 100 sequence entries.
en/ref/name/ip.txt · Last modified: by Petr Pařík