NL1 Prescribed biaxial strain history, plane strain. Unexpected programm shut down

Bug Reports
1

Hi and Merry Christmas to all.

First of all congratulate Matej once again for the work done this year. It’s amazing how far Prepomax has come in such a short time. I am finding that some of the benchmarks I’m doing are super easy to configure.

I am progressing fast with positive results on the vast majority. If I find anything unusual I will post it to polish my set ups and report possible unexpected results. I hope it doesn’t have a negative reading. The ultimate intention is to have all the basic benchmarks reviewed while gaining experience with the program.
Let’s get down to business.

I have experienced several shutdowns with no error message during the following operation.

When try to delete some of the material input data, Prepomax closes.

1- 2.5E-5 Plastic Strain value erased and set it to zero. Press enter.
2- Yield Stress 5.0001 erased to set it to other value. Prepomax Closes.
Prepomax 2.2.6 dev

screenshot.48
screenshot.48593×898 57.2 KB

**
** Heading +++++++++++++++++++++++++++++++++++++++++++++++++
**
*Heading
Hash: u34ad7qo, Date: 12/25/2024, Unit system: M_KG_S_C
**
** Nodes +++++++++++++++++++++++++++++++++++++++++++++++++++
**
*Node
1, 0.00000000E+000, 0.00000000E+000
2, 1.00000000E+000, 0.00000000E+000
3, 1.00000000E+000, 1.00000000E+000
4, 0.00000000E+000, 1.00000000E+000
5, 5.00000000E-001, 1.50000000E+000
6, 1.50000000E+000, 5.00000000E-001
**
** Elements ++++++++++++++++++++++++++++++++++++++++++++++++
**
*Element, Type=CPE4R, Elset=Shell_part-1
1, 1, 2, 3, 4
**
** Node sets +++++++++++++++++++++++++++++++++++++++++++++++
**
*Nset, Nset=Node_Set-3
3
*Nset, Nset=Node_Set-2
2
*Nset, Nset=Node_Set-1
1
*Nset, Nset=Node_Set-4
4
**
** Element sets ++++++++++++++++++++++++++++++++++++++++++++
**
*Elset, Elset=Internal_Selection-1_Solid_Section-1
Shell_part-1
**
** Surfaces ++++++++++++++++++++++++++++++++++++++++++++++++
**
**
** Physical constants ++++++++++++++++++++++++++++++++++++++
**
**
** Coordinate systems ++++++++++++++++++++++++++++++++++++++
**
**
** Materials +++++++++++++++++++++++++++++++++++++++++++++++
**
*Material, Name=Material-1
*Elastic
250000000000, 0.25
*Plastic
5, 2.5E-05
5.00001, 1
**
** Sections ++++++++++++++++++++++++++++++++++++++++++++++++
**
*Solid section, Elset=Internal_Selection-1_Solid_Section-1, Material=Material-1
1
**
** Pre-tension sections ++++++++++++++++++++++++++++++++++++
**
**
** Constraints +++++++++++++++++++++++++++++++++++++++++++++
**
**
** Surface interactions ++++++++++++++++++++++++++++++++++++
**
**
** Contact pairs +++++++++++++++++++++++++++++++++++++++++++
**
**
** Amplitudes ++++++++++++++++++++++++++++++++++++++++++++++
**
**
** Initial conditions ++++++++++++++++++++++++++++++++++++++
**
**
** Steps +++++++++++++++++++++++++++++++++++++++++++++++++++
**
**
** Step-1 ++++++++++++++++++++++++++++++++++++++++++++++++++
**
*Step, Nlgeom, Inc=1
*Static, Solver=Pardiso
1, 1, 1E-05, 1
**
** Controls ++++++++++++++++++++++++++++++++++++++++++++++++
**
**
** Output frequency ++++++++++++++++++++++++++++++++++++++++
**
*Output, Frequency=1
**
** Boundary conditions +++++++++++++++++++++++++++++++++++++
**
*Boundary, op=New
** Name: Displacement_Rotation-1
*Boundary, Fixed
Node_Set-1, 1, 1
Node_Set-1, 2, 2
** Name: Displacement_Rotation-2
*Boundary
Node_Set-2, 1, 1, 2.5E-05
Node_Set-2, 2, 2, 0
** Name: Displacement_Rotation-3
*Boundary
Node_Set-3, 1, 1, 2.5E-05
Node_Set-3, 2, 2, 0
** Name: Displacement_Rotation-4
*Boundary
Node_Set-4, 1, 1, 0
Node_Set-4, 2, 2, 0
**
** Loads +++++++++++++++++++++++++++++++++++++++++++++++++++
**
*Cload, op=New
*Dload, op=New
**
** Defined fields ++++++++++++++++++++++++++++++++++++++++++
**
**
** History outputs +++++++++++++++++++++++++++++++++++++++++
**
**
** Field outputs +++++++++++++++++++++++++++++++++++++++++++
**
*Node file
RF, U
*El file
S, E, NOE
**
** End step ++++++++++++++++++++++++++++++++++++++++++++++++
**
*End step
2

Benchmark ended with nice results all across the eight steps.
Very easy set up with the duplicate step tool.
Element, Type=CPE4R

imagen
imagen709×619 9.83 KB

**
** Heading +++++++++++++++++++++++++++++++++++++++++++++++++
**
*Heading
Hash: u34ad7qo, Date: 12/26/2024, Unit system: M_KG_S_C
**
** Nodes +++++++++++++++++++++++++++++++++++++++++++++++++++
**
*Node
1, 0.00000000E+000, 0.00000000E+000
2, 1.00000000E+000, 0.00000000E+000
3, 1.00000000E+000, 1.00000000E+000
4, 0.00000000E+000, 1.00000000E+000
5, 5.00000000E-001, 1.50000000E+000
6, 1.50000000E+000, 5.00000000E-001
**
** Elements ++++++++++++++++++++++++++++++++++++++++++++++++
**
*Element, Type=CPE4R, Elset=Shell_part-1
1, 1, 2, 3, 4
**
** Node sets +++++++++++++++++++++++++++++++++++++++++++++++
**
*Nset, Nset=Node_Set-3
3
*Nset, Nset=Node_Set-2
2
*Nset, Nset=Node_Set-1
1
*Nset, Nset=Node_Set-4
4
**
** Element sets ++++++++++++++++++++++++++++++++++++++++++++
**
*Elset, Elset=Internal_Selection-1_Solid_Section-1
Shell_part-1
**
** Surfaces ++++++++++++++++++++++++++++++++++++++++++++++++
**
**
** Physical constants ++++++++++++++++++++++++++++++++++++++
**
**
** Coordinate systems ++++++++++++++++++++++++++++++++++++++
**
**
** Materials +++++++++++++++++++++++++++++++++++++++++++++++
**
** Name: Material-1: Deactivated
*Material, Name=Material-2
*Elastic
250000000000, 0.25
*Plastic
5000000, 0
62500000000, 1
**
** Sections ++++++++++++++++++++++++++++++++++++++++++++++++
**
*Solid section, Elset=Internal_Selection-1_Solid_Section-1, Material=Material-2
1
**
** Pre-tension sections ++++++++++++++++++++++++++++++++++++
**
**
** Constraints +++++++++++++++++++++++++++++++++++++++++++++
**
**
** Surface interactions ++++++++++++++++++++++++++++++++++++
**
**
** Contact pairs +++++++++++++++++++++++++++++++++++++++++++
**
**
** Amplitudes ++++++++++++++++++++++++++++++++++++++++++++++
**
**
** Initial conditions ++++++++++++++++++++++++++++++++++++++
**
**
** Steps +++++++++++++++++++++++++++++++++++++++++++++++++++
**
**
** Step-1 ++++++++++++++++++++++++++++++++++++++++++++++++++
**
*Step, Nlgeom, Inc=100
*Static, Solver=Pardiso
0.1, 1, 1E-05, 0.1
**
** Controls ++++++++++++++++++++++++++++++++++++++++++++++++
**
**
** Output frequency ++++++++++++++++++++++++++++++++++++++++
**
*Output, Frequency=1
**
** Boundary conditions +++++++++++++++++++++++++++++++++++++
**
*Boundary, op=New
** Name: Displacement_Rotation-1
*Boundary, Fixed
Node_Set-1, 1, 1
Node_Set-1, 2, 2
** Name: Displacement_Rotation-2
*Boundary
Node_Set-2, 1, 1, 2.5E-05
Node_Set-2, 2, 2, 0
** Name: Displacement_Rotation-3
*Boundary
Node_Set-3, 1, 1, 2.5E-05
Node_Set-3, 2, 2, 0
** Name: Displacement_Rotation-4
*Boundary
Node_Set-4, 1, 1, 0
Node_Set-4, 2, 2, 0
**
** Loads +++++++++++++++++++++++++++++++++++++++++++++++++++
**
*Cload, op=New
*Dload, op=New
**
** Defined fields ++++++++++++++++++++++++++++++++++++++++++
**
**
** History outputs +++++++++++++++++++++++++++++++++++++++++
**
**
** Field outputs +++++++++++++++++++++++++++++++++++++++++++
**
*Node file
RF, U
*El file
S, E, NOE
**
** End step ++++++++++++++++++++++++++++++++++++++++++++++++
**
*End step
**
** Step-2 ++++++++++++++++++++++++++++++++++++++++++++++++++
**
*Step, Nlgeom, Inc=100
*Static, Solver=Pardiso
0.1, 1, 1E-05, 0.1
**
** Controls ++++++++++++++++++++++++++++++++++++++++++++++++
**
**
** Output frequency ++++++++++++++++++++++++++++++++++++++++
**
*Output, Frequency=1
**
** Boundary conditions +++++++++++++++++++++++++++++++++++++
**
*Boundary, op=New
** Name: Displacement_Rotation-1
*Boundary, Fixed
Node_Set-1, 1, 1
Node_Set-1, 2, 2
** Name: Displacement_Rotation-2
*Boundary
Node_Set-2, 1, 1, 5E-05
Node_Set-2, 2, 2, 0
** Name: Displacement_Rotation-3
*Boundary
Node_Set-3, 1, 1, 5E-05
Node_Set-3, 2, 2, 0
** Name: Displacement_Rotation-4
*Boundary
Node_Set-4, 1, 1, 0
Node_Set-4, 2, 2, 0
**
** Loads +++++++++++++++++++++++++++++++++++++++++++++++++++
**
*Cload, op=New
*Dload, op=New
**
** Defined fields ++++++++++++++++++++++++++++++++++++++++++
**
**
** History outputs +++++++++++++++++++++++++++++++++++++++++
**
**
** Field outputs +++++++++++++++++++++++++++++++++++++++++++
**
*Node file
RF, U
*El file
S, E, NOE
**
** End step ++++++++++++++++++++++++++++++++++++++++++++++++
**
*End step
**
** Step-3 ++++++++++++++++++++++++++++++++++++++++++++++++++
**
*Step, Nlgeom, Inc=100
*Static, Solver=Pardiso
0.1, 1, 1E-05, 0.1
**
** Controls ++++++++++++++++++++++++++++++++++++++++++++++++
**
**
** Output frequency ++++++++++++++++++++++++++++++++++++++++
**
*Output, Frequency=1
**
** Boundary conditions +++++++++++++++++++++++++++++++++++++
**
*Boundary, op=New
** Name: Displacement_Rotation-1
*Boundary, Fixed
Node_Set-1, 1, 1
Node_Set-1, 2, 2
** Name: Displacement_Rotation-2
*Boundary
Node_Set-2, 1, 1, 5E-05
Node_Set-2, 2, 2, 0
** Name: Displacement_Rotation-3
*Boundary
Node_Set-3, 1, 1, 5E-05
Node_Set-3, 2, 2, 2.5E-05
** Name: Displacement_Rotation-4
*Boundary
Node_Set-4, 1, 1, 0
Node_Set-4, 2, 2, 2.5E-05
**
** Loads +++++++++++++++++++++++++++++++++++++++++++++++++++
**
*Cload, op=New
*Dload, op=New
**
** Defined fields ++++++++++++++++++++++++++++++++++++++++++
**
**
** History outputs +++++++++++++++++++++++++++++++++++++++++
**
**
** Field outputs +++++++++++++++++++++++++++++++++++++++++++
**
*Node file
RF, U
*El file
S, E, NOE
**
** End step ++++++++++++++++++++++++++++++++++++++++++++++++
**
*End step
**
** Step-4 ++++++++++++++++++++++++++++++++++++++++++++++++++
**
*Step, Nlgeom, Inc=100
*Static, Solver=Pardiso
0.1, 1, 1E-05, 0.1
**
** Controls ++++++++++++++++++++++++++++++++++++++++++++++++
**
**
** Output frequency ++++++++++++++++++++++++++++++++++++++++
**
*Output, Frequency=1
**
** Boundary conditions +++++++++++++++++++++++++++++++++++++
**
*Boundary, op=New
** Name: Displacement_Rotation-1
*Boundary, Fixed
Node_Set-1, 1, 1
Node_Set-1, 2, 2
** Name: Displacement_Rotation-2
*Boundary
Node_Set-2, 1, 1, 5E-05
Node_Set-2, 2, 2, 0
** Name: Displacement_Rotation-3
*Boundary
Node_Set-3, 1, 1, 5E-05
Node_Set-3, 2, 2, 5E-05
** Name: Displacement_Rotation-4
*Boundary
Node_Set-4, 1, 1, 0
Node_Set-4, 2, 2, 5E-05
**
** Loads +++++++++++++++++++++++++++++++++++++++++++++++++++
**
*Cload, op=New
*Dload, op=New
**
** Defined fields ++++++++++++++++++++++++++++++++++++++++++
**
**
** History outputs +++++++++++++++++++++++++++++++++++++++++
**
**
** Field outputs +++++++++++++++++++++++++++++++++++++++++++
**
*Node file
RF, U
*El file
S, E, NOE
**
** End step ++++++++++++++++++++++++++++++++++++++++++++++++
**
*End step
**
** Step-5 ++++++++++++++++++++++++++++++++++++++++++++++++++
**
*Step, Nlgeom, Inc=100
*Static, Solver=Pardiso
0.1, 1, 1E-05, 0.1
**
** Controls ++++++++++++++++++++++++++++++++++++++++++++++++
**
**
** Output frequency ++++++++++++++++++++++++++++++++++++++++
**
*Output, Frequency=1
**
** Boundary conditions +++++++++++++++++++++++++++++++++++++
**
*Boundary, op=New
** Name: Displacement_Rotation-1
*Boundary, Fixed
Node_Set-1, 1, 1
Node_Set-1, 2, 2
** Name: Displacement_Rotation-2
*Boundary
Node_Set-2, 1, 1, 2.5E-05
Node_Set-2, 2, 2, 0
** Name: Displacement_Rotation-3
*Boundary
Node_Set-3, 1, 1, 2.5E-05
Node_Set-3, 2, 2, 5E-05
** Name: Displacement_Rotation-4
*Boundary
Node_Set-4, 1, 1, 0
Node_Set-4, 2, 2, 5E-05
**
** Loads +++++++++++++++++++++++++++++++++++++++++++++++++++
**
*Cload, op=New
*Dload, op=New
**
** Defined fields ++++++++++++++++++++++++++++++++++++++++++
**
**
** History outputs +++++++++++++++++++++++++++++++++++++++++
**
**
** Field outputs +++++++++++++++++++++++++++++++++++++++++++
**
*Node file
RF, U
*El file
S, E, NOE
**
** End step ++++++++++++++++++++++++++++++++++++++++++++++++
**
*End step
**
** Step-6 ++++++++++++++++++++++++++++++++++++++++++++++++++
**
*Step, Nlgeom, Inc=100
*Static, Solver=Pardiso
0.1, 1, 1E-05, 0.1
**
** Controls ++++++++++++++++++++++++++++++++++++++++++++++++
**
**
** Output frequency ++++++++++++++++++++++++++++++++++++++++
**
*Output, Frequency=1
**
** Boundary conditions +++++++++++++++++++++++++++++++++++++
**
*Boundary, op=New
** Name: Displacement_Rotation-1
*Boundary, Fixed
Node_Set-1, 1, 1
Node_Set-1, 2, 2
** Name: Displacement_Rotation-2
*Boundary
Node_Set-2, 1, 1, 0
Node_Set-2, 2, 2, 0
** Name: Displacement_Rotation-3
*Boundary
Node_Set-3, 1, 1, 0
Node_Set-3, 2, 2, 5E-05
** Name: Displacement_Rotation-4
*Boundary
Node_Set-4, 1, 1, 0
Node_Set-4, 2, 2, 5E-05
**
** Loads +++++++++++++++++++++++++++++++++++++++++++++++++++
**
*Cload, op=New
*Dload, op=New
**
** Defined fields ++++++++++++++++++++++++++++++++++++++++++
**
**
** History outputs +++++++++++++++++++++++++++++++++++++++++
**
**
** Field outputs +++++++++++++++++++++++++++++++++++++++++++
**
*Node file
RF, U
*El file
S, E, NOE
**
** End step ++++++++++++++++++++++++++++++++++++++++++++++++
**
*End step
**
** Step-7 ++++++++++++++++++++++++++++++++++++++++++++++++++
**
*Step, Nlgeom, Inc=100
*Static, Solver=Pardiso
0.1, 1, 1E-05, 0.1
**
** Controls ++++++++++++++++++++++++++++++++++++++++++++++++
**
**
** Output frequency ++++++++++++++++++++++++++++++++++++++++
**
*Output, Frequency=1
**
** Boundary conditions +++++++++++++++++++++++++++++++++++++
**
*Boundary, op=New
** Name: Displacement_Rotation-1
*Boundary, Fixed
Node_Set-1, 1, 1
Node_Set-1, 2, 2
** Name: Displacement_Rotation-2
*Boundary
Node_Set-2, 1, 1, 0
Node_Set-2, 2, 2, 0
** Name: Displacement_Rotation-3
*Boundary
Node_Set-3, 1, 1, 0
Node_Set-3, 2, 2, 2.5E-05
** Name: Displacement_Rotation-4
*Boundary
Node_Set-4, 1, 1, 0
Node_Set-4, 2, 2, 2.5E-05
**
** Loads +++++++++++++++++++++++++++++++++++++++++++++++++++
**
*Cload, op=New
*Dload, op=New
**
** Defined fields ++++++++++++++++++++++++++++++++++++++++++
**
**
** History outputs +++++++++++++++++++++++++++++++++++++++++
**
**
** Field outputs +++++++++++++++++++++++++++++++++++++++++++
**
*Node file
RF, U
*El file
S, E, NOE
**
** End step ++++++++++++++++++++++++++++++++++++++++++++++++
**
*End step
**
** Step-8 ++++++++++++++++++++++++++++++++++++++++++++++++++
**
*Step, Nlgeom, Inc=100
*Static, Solver=Pardiso
0.1, 1, 1E-05, 0.1
**
** Controls ++++++++++++++++++++++++++++++++++++++++++++++++
**
**
** Output frequency ++++++++++++++++++++++++++++++++++++++++
**
*Output, Frequency=1
**
** Boundary conditions +++++++++++++++++++++++++++++++++++++
**
*Boundary, op=New
** Name: Displacement_Rotation-1
*Boundary, Fixed
Node_Set-1, 1, 1
Node_Set-1, 2, 2
** Name: Displacement_Rotation-2
*Boundary
Node_Set-2, 1, 1, 0
Node_Set-2, 2, 2, 0
** Name: Displacement_Rotation-3
*Boundary
Node_Set-3, 1, 1, 0
Node_Set-3, 2, 2, 0
** Name: Displacement_Rotation-4
*Boundary
Node_Set-4, 1, 1, 0
Node_Set-4, 2, 2, 0
**
** Loads +++++++++++++++++++++++++++++++++++++++++++++++++++
**
*Cload, op=New
*Dload, op=New
**
** Defined fields ++++++++++++++++++++++++++++++++++++++++++
**
**
** History outputs +++++++++++++++++++++++++++++++++++++++++
**
**
** Field outputs +++++++++++++++++++++++++++++++++++++++++++
**
*Node file
RF, U
*El file
S, E, NOE
**
** End step ++++++++++++++++++++++++++++++++++++++++++++++++
**
*End step
2 Likes
3

I have tried to reproduce the problem with no success. Can you prepare a .pmx file where only one action (last action) is needed that always closes PrePoMax?

4

Than you! :christmas_tree:

5

Any progress on this problem?

6

In last dev version 2.2.9 Prepomax doesn’t close but this message shows when trying to cut the values of the second Yield/Plastic Strain

screenshot.127
screenshot.1271063×706 78.6 KB

7

I think I found the problem. The problem is deleting a cell so that its content is empty and then pressing the Enter key.

I have fixed the problem in version v2.2.10. Please confirm that it is working.