appendices:a20
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appendices:a20 [2021/11/23 11:15] helene [2. Definition of $N_i$ and $N_j$] |
appendices:a20 [2022/09/30 09:49] (current) helene [Appendix 20: Cycle jump procedure] |
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| These 2 steps are then repeated until the calculation is completed. The number of cycles to be fully calculated $N_i$ and the number of "jumped" cycles $N_j$ can vary during the simulation. One can also pick the results to be extrapolated during the jump. \\ | These 2 steps are then repeated until the calculation is completed. The number of cycles to be fully calculated $N_i$ and the number of "jumped" cycles $N_j$ can vary during the simulation. One can also pick the results to be extrapolated during the jump. \\ | ||
| \\ | \\ | ||
| - | The cycle jump can be performed with Lagamine usign the Fortran EXTRAPOL program along with the attached Python script. \\ | + | The cycle jump can be performed with Lagamine using the Fortran EXTRAPOL program along with the attached Python script. The code is available on the [[https://gitlab.uliege.be/UEE/cycle-jump|GitLab]] \\ |
| - | ===== User guide ===== | + | ===== Structure of the data file ===== |
| The cycle jump procedure can be used on any cyclic simulation. It is launched using the Python script and requires an additional info file. \\ | The cycle jump procedure can be used on any cyclic simulation. It is launched using the Python script and requires an additional info file. \\ | ||
| The following tables describe the structure of the info file. \\ | The following tables describe the structure of the info file. \\ | ||
| Line 23: | Line 23: | ||
| ^Line 4 (2 integers)^^ | ^Line 4 (2 integers)^^ | ||
| |T| Period of the loading [s]| | |T| Period of the loading [s]| | ||
| - | |Tmax| Final/Maximum value of the time step (this corresponds to ALAMBF in a classic simulation)| | + | |Tmax| Final/Maximum value of the time (this corresponds to ALAMBF in a classic simulation)| |
| ==== 2. Definition of $N_i$ and $N_j$ ==== | ==== 2. Definition of $N_i$ and $N_j$ ==== | ||
| ^Line 1^^ | ^Line 1^^ | ||
| - | |Title| Anything can be written here, (for instance "Cycle definition"), this is just to make the file easier to read for the user| | + | |Title| Anything can be written here, for instance "Cycle definition", this is just to make the file easier to read for the user| |
| ^Line 2^^ | ^Line 2^^ | ||
| |IDENT| = 0 - $N_i$ and $N_j$ are kept constant over the whole simulation and defined at the next line \\ = 1 - $N_i$ and $N_j$ are predefined by blocks. This allows for instance to have low values of $N_j$ at the begining of the simulation and higher values later once the beaviour of the structure is stabilized.| | |IDENT| = 0 - $N_i$ and $N_j$ are kept constant over the whole simulation and defined at the next line \\ = 1 - $N_i$ and $N_j$ are predefined by blocks. This allows for instance to have low values of $N_j$ at the begining of the simulation and higher values later once the beaviour of the structure is stabilized.| | ||
| - | |:::| 10 ≤ IDENT < 1000 - User-defined calculation of $N_j$ and constant $N_i$. This must be implemented by the user in the EXTRAPOL program. \\ 1000 ≤ IDENT < 2000 - User-defined calculation of $N_j$ and $N_i$ defined by blocks. The calculation of $N_j$ must be implemented by the user in the EXTRAPOL program.| | + | |:::| ≥ 10 - User-defined calculation of $N_j$. The calculation of $N_j$ must be implemented by the user in the EXTRAPOL program. \\ $N_i$ is defined according to the units (= 0 for constant $N_i$, = 1 for definition by block).| |
| + | |||
| + | === If IDENT % 10 = 0 === | ||
| + | ^Line 3 (1 or 2 integers)^^ | ||
| + | |$N_i$| Value of the number of cycles for which a complete calculation is done in the Lagamine code| | ||
| + | |$N_j$| Only if IDENT = 0 \\ Value of the number of jumped cycles| | ||
| + | === If IDENT % 10 = 1 === | ||
| + | ^Line 3 (1 integer)^^ | ||
| + | |Nbloc| Number of blocks of definition| | ||
| + | ^Line 4 (2 or 3 integers) - repeated Nbloc times^^ | ||
| + | |Cycmax| Number of the last cycle for which this definition of $N_i$ and $N_j$ applies; i.e. the values $N_i$ and $N_j$ defined on this line will be used until cycle Cycmax is reached| | ||
| + | |$N_i$| Value of the number of cycles for which a complete calculation is done in the Lagamine code| | ||
| + | |$N_j$| Only if IDENT = 1 \\ Value of the number of jumped cycles| | ||
| + | |||
| + | === If IDENT ≥ 10 === | ||
| + | See specific definitions [[appendices:a20:ident|here]]. | ||
| + | ^Line 4 or 5 (1 integer)^^ | ||
| + | |NPAR|Number of parameters used for the user-defined computation of $N_j$\\ ≤ 50| | ||
| + | ^Line 5 or 6^^ | ||
| + | |Param(1:NPAR)| Parameters for the user-defined calculation of $N_j$. Parameters can be integers of double precision.| | ||
| + | |||
| + | ==== 3. Extrapolation method ==== | ||
| + | ^Line 1^^ | ||
| + | |Title| Anything can be written here, for instance "Method"; this is just to make the file easier to read for the user| | ||
| + | ^Line 2 (integer) ^^ | ||
| + | |METHO| = 0 - All nodal values, reactions, stresses, and state variables are extrapolated linearly during the jump.| | ||
| + | |:::| = XX1 (X can be 0, 1, or 2) - The elements and state variables for which one wishes a linear extrapolation during the jump are defined by the user \\ = XX2 (X can be 0, 1, or 2) - The elements defined on the following lines will have their variables extrapolated through a user-defined method| | ||
| + | |:::| = X1X (X can be 0 or 1) - The nodal points and nodal values for which one wishes a linear extrapolation during the jump are defined by the user\\ = X2X (X can be 0, 1, or 2) - The nodes defined on the following lines will have their nodal values extrapolated through a user-defined method| | ||
| + | |:::| = 1XX (X can be 0 or 1) = The reactions for which one wishes a linear extrapolation during the jump are defined by the user| | ||
| + | |:::| > 222 - User-defined method of extrapolation| | ||
| + | === For 0 < METHO < 222 === | ||
| + | __If units = 1 (XX1)__ | ||
| + | ^Line 1^^ | ||
| + | |NGR| Number of groups of {elements/state variables} defined. \\ This definition by groups allows to only extrapolate specific state variables (including stresses) for different types of elements, or for same-type elements that use different material/thermal laws.| | ||
| + | The following lines are repeated NGR times: | ||
| + | ^Line 1 (4 integers)^^ | ||
| + | |NelGR| Number of subgroups of elements; a subgroup of elements can consist of 1 element or multiple consecutive elements. | | ||
| + | |NelTOT| Total number of elements in the group| | ||
| + | |NvarGR|Number of subgroups of variables (as defined in [[appendices:a22|SIGVA]]). A subgroup of variables can consist of 1 variable or multiple consecutive variables.| | ||
| + | |NvarTOT| Total number of variables in the group| | ||
| + | ^Line 2 - repeated NelGR times (2 integers)^^ | ||
| + | |IEL(i)| First element of the subgroup| | ||
| + | |IEL(i+1)| Last element of the subgroup \\ = 0 if subgroup consists of 1 element| | ||
| + | ^ Line NelGR+2 - repeated NvarGR times (2 integers)^^ | ||
| + | |IVAR(i)| First variable of the subgroup; the variable number corresponds to its position in [[appendices:a22|SIGVA]]| | ||
| + | |IVAR(i+1)| Last element of the subgroup \\ = 0 if subgroup consists of 1 element| | ||
| + | __If units = 2 (XX2)__ | ||
| + | ^Line 1^^ | ||
| + | |NGR| Number of groups of elements defined.| | ||
| + | The following lines are repeated NGR times: | ||
| + | ^Line 1 (3 integers)^^ | ||
| + | |NelGR| Number of subgroups of elements; a subgroup of elements can consist of 1 element or multiple consecutive elements. | | ||
| + | |NelTOT| Total number of elements in the group| | ||
| + | |Nmetho| Identification number of of the user-defined extrapolation method| | ||
| + | ^Line 2 - repeated NelGR times (2 integers)^^ | ||
| + | |IEL(i)| First element of the subgroup| | ||
| + | |IEL(i+1)| Last element of the subgroup \\ = 0 if subgroup consists of 1 element| | ||
| + | |||
| + | __If tens = 1 (X1X)__ | ||
| + | ^Line 1^^ | ||
| + | |NGRN| Number of groups of {nodes/nodal values} defined. \\ This definition by groups allows to only extrapolate specific nodal values for different nodes| | ||
| + | The following lines are repeated NGR times: | ||
| + | ^Line 1 (4 integers)^^ | ||
| + | |NnodGR| Number of subgroups of nodes; a subgroup of nodes can consist of 1 node or multiple consecutive nodes. | | ||
| + | |NnodTOT| Total number of nodes in the group| | ||
| + | |NvalGR|Number of subgroups of nodal values (as defined in [[appendices:a22|CONEC]]). A subgroup of nodal values can consist of 1 nodal value or multiple consecutive nodal values.| | ||
| + | |NvalTOT| Total number of nodal values in the group| | ||
| + | ^Line 2 - repeated NnodGR times (2 integers)^^ | ||
| + | |Inod(i)| First node of the subgroup| | ||
| + | |Inod(i+1)| Last node of the subgroup \\ = 0 if subgroup consists of 1 element| | ||
| + | ^ Line NnodGR+2 - repeated NvalGR times (2 integers)^^ | ||
| + | |IVAl(i)| First nodal value of the subgroup. The nodal value is identified by the number ipcon=(icone-1)*nspac+ispac (see [[appendices:a22|Appendix 22: Structure of CONEC]])| | ||
| + | |IVAl(i+1)| Last nodal value of the subgroup \\ = 0 if subgroup consists of 1 element| | ||
| + | |||
| + | __If hundreds = 1 (1XX)__ | ||
| + | ^Line 1 (2 integers)^^ | ||
| + | |NGR_rea| Number of groups of reactions defined.| | ||
| + | |Nreatot| Total number of reactions.| | ||
| + | ^Line 2 - repeated NGR_rea times (2 integers)^^ | ||
| + | |Irea(i)|First reaction number of the subgroup (from REAC vector)| | ||
| + | |Irea(i+1)|Last reaction of the subgroup \\ = 0 if subgroup consists of 1 element| | ||
appendices/a20.1637662535.txt.gz · Last modified: 2021/11/23 11:15 by helene
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