Hey.
I am trying to solve the multiple load case problem
The problem definition is as follows:
Where I am defining the P =100N at first step and Q = 100N at second step.
I want to output the displacement due to load P and Q separately.
I found that the force from previous steps get carried to next step with my approach
force vector from .frd file:
Please let me know the right way to solve multiple load case problems. And to get separate displacements for each load case.
Thanks!!
Below is the input file for your reference:
Note: The input file has total nodes: 9840, elements: 10088, So removed nodes and element entries to make inp file easy read.
**
** Heading +++++++++++++++++++++++++++++++++++++++++++++++++
**
*Heading
Hash: 39NASbDZ, Date: 02/14/2024, Unit system: MM_TON_S_C
**
** Nodes +++++++++++++++++++++++++++++++++++++++++++++++++++
**
*Node
1, -1.00000000E+000, -1.00000000E+000
2, 1.00000000E+000, -1.00000000E+000
3, 1.00000000E+000, 1.00000000E+000
4, -1.00000000E+000, 1.00000000E+000
5, -2.00000000E-001, -2.00000000E-001
6, 2.00000000E-001, -2.00000000E-001
7, 2.00000000E-001, 2.00000000E-001
8, -2.00000000E-001, 2.00000000E-001
9, -9.80000000E-001, -1.00000000E+000
10, -9.60000000E-001, -1.00000000E+000
.
.
.
9838, 3.37809038E-001, 5.84655969E-002
9839, 4.56807981E-001, 2.00389524E-002
9840, 2.98697299E-001, 1.87236868E-002
**
** Elements ++++++++++++++++++++++++++++++++++++++++++++++++
**
*Element, Type=CPS4, Elset=Shell_part-1
489, 1444, 2761, 2765, 2764
490, 2761, 1585, 2762, 2765
491, 2765, 2762, 1632, 2763
492, 2764, 2765, 2763, 1705
.
.
10086, 9809, 853, 6101, 9840
10087, 9840, 6101, 859, 3586
10088, 9806, 9840, 3586, 1176
**
** Node sets +++++++++++++++++++++++++++++++++++++++++++++++
**
*Nset, Nset=Internal_Selection-1_Fixed
5, 6, 7, 8, 405, 406, 407, 408, 409, 410, 411, 412, 413, 414, 415, 416,
417, 418, 419, 420, 421, 422, 423, 424, 425, 426, 427, 428, 429, 430, 431, 432,
433, 434, 435, 436, 437, 438, 439, 440, 441, 442, 443, 444, 445, 446, 447, 448,
449, 450, 451, 452, 453, 454, 455, 456, 457, 458, 459, 460, 461, 462, 463, 464,
465, 466, 467, 468, 469, 470, 471, 472, 473, 474, 475, 476, 477, 478, 479, 480
*Nset, Nset=Internal_Selection-1_Force1
2
*Nset, Nset=Internal_Selection-1_Force2
3
*Nset, Nset=Internal_Selection-1_Force3
4
*Nset, Nset=Internal_Selection-1_Force4
1
*Nset, Nset=Internal_Selection-1_Force5
2
*Nset, Nset=Internal_Selection-1_Force6
3
*Nset, Nset=Internal_Selection-1_Force7
4
*Nset, Nset=Internal_Selection-1_Force8
1
** Materials +++++++++++++++++++++++++++++++++++++++++++++++
**
*Material, Name=Steel
*Elastic
100, 0.3
*density
1
**
** Sections ++++++++++++++++++++++++++++++++++++++++++++++++
**
*Solid section, Elset=Shell_part-1, Material=Steel
1
** Steps +++++++++++++++++++++++++++++++++++++++++++++++++++
**
**
** Step-1 ++++++++++++++++++++++++++++++++++++++++++++++++++
**
*Step
*Static
**
** Output frequency ++++++++++++++++++++++++++++++++++++++++
**
*Output, Frequency=1
**
** Boundary conditions +++++++++++++++++++++++++++++++++++++
**
*Boundary, op=New
** Name: Fixed
*Boundary
Internal_Selection-1_Fixed, 1, 1,0
Internal_Selection-1_Fixed, 2, 2,0
**
** Loads +++++++++++++++++++++++++++++++++++++++++++++++++++
**
*Cload, op=New
*Dload, op=New
** Name: Force1
*Cload
Internal_Selection-1_Force1, 1, -100
** Name: Force2
*Cload
Internal_Selection-1_Force2, 2, -100
** Name: Force3
*Cload
Internal_Selection-1_Force3, 1, 100
** Name: Force4
*Cload
Internal_Selection-1_Force4, 2, 100
**
** Defined fields ++++++++++++++++++++++++++++++++++++++++++
**
**
** History outputs +++++++++++++++++++++++++++++++++++++++++
**
**
** Field outputs +++++++++++++++++++++++++++++++++++++++++++
**
*Node file
RF,U
**
** End step ++++++++++++++++++++++++++++++++++++++++++++++++
**
*End step
*Step
*Static
** Name: Force5
*Cload
Internal_Selection-1_Force5, 2, 100
** Name: Force6
*Cload
Internal_Selection-1_Force6, 1, -100
** Name: Force7
*Cload
Internal_Selection-1_Force7, 2, -100
** Name: Force8
*Cload
Internal_Selection-1_Force8, 1, 100
*End step