optimization problem

[vacupenda]

I encountered some issues while using the strength ratio for blade parameter optimization. So, I want to first run the parameter optimization problem for a single cross-section. Below is a portion of my .yml file, and here's the issue: When I run ivabs analyze main.yml alone, it calculates the cross-section information I need, such as the parameters 'mu', 'ea', "gj", "eiyy", "eizz", and 'sr', as shown in Figure 1. However, when I add the study module, it prompts an error message as shown in Figure 2.

analysis:
  steps:
    - step: "cs analysis"
      type: "cs"
      analysis: "h"
      output:
        value: [
          'mu',
          'ea', "gj", "eiyy", "eizz",
        ]
        
    - step: "recovery"
      type: "cs"
      analysis: "fi"
      section_response:
        data_form: "list"
        cases:
          - displacement: [1.14e-05,1.92e-06,2.00e-3]  # U1, U2, U3
            load:
              - -6.960731065297227e-05  # F1
              - 0.00044668538601352393  # F2
              - 0.015870420038137607  # F3
              - 0.000229788237956122  # M1
              - 8.13244480333271e-06  # M2
              - -1.4022416078181857e-06  # M3
      output:
        file_name: "strength_ratio.yml"
        file_format: "yml"
        value: ['sr',]
    
study:
  method:
    format: "keyword"
    multidim_parameter_study:
      partitions: [2, 1]
    # soga:  # Single objective genetic algorithm
    #   max_function_evaluations: 10
    #   population_size: 5
    #   seed: 1027
    #   print_each_pop: true
  variables:
    data_form: "explicit"
    list:
      - name: "ang_spar"
        type: "continuous"
        bounds: [0, 10]
      - name: "ply_spar"
        type: "discrete"
        space_type: "range"
        bounds: [950, 953]
  # responses:
  #   data_form: "explicit"
  #   objective_functions:
  #     - descriptor: 'sr'
  #       sense: 'maximize'
  responses:
    data_form: "explicit"
    response_functions:
      - descriptor: 'mu'
      - descriptor: 'ea'
      - descriptor: 'sr'
      - descriptor: 'gj'
      - descriptor: 'eiyy'
      - descriptor: 'eizz'
  interface:
    fork:
      parameters_file: "input.in"
      results_file: "output.out"
      file_save: on
      work_directory:
        directory_tag: on
        directory_save: on
    required_files:
      - "design/*"

[unitasium]

As shown in the first image, sr returns an array containing strength ratios for all load cases and cross-sections, even if there is only one case and one cs. To be used as objectives or constraints, any quantity must return a single number. For your case, you can output sr_min in the recovery step.

[vacupenda]

The only parameter that can be recognized correctly is 'ea', while the other parameters seem to have issues.

[vacupenda]

In the current optimization process, all other parameters can be recognized, but when outputting sr_min in recovery, it still shows that the parameter cannot be recognized.

version: "0.10"

structure:
  name: "blade"
  parameter:
    ang_front: 0
    ply_front: 1
  cs:
    - name: 'main_cs'
      design: "airfoil"
      model:
        type: "bm1"
        solver: 'vabs'

# CS base design
# ====================================================================
cs:
  - name: "airfoil"
    builder: "prevabs"
    parameter:
      ang_front: 0
      ply_front: 1
    design:
      base_file: "airfoil_simple.xml.tmp"

# Analysis process
# ====================================================================
analysis:
  steps:
    - step: "cs analysis"
      type: "cs"
      analysis: "h"
      # setting:
      #   timeout: 60
      output:
        value: [
          'mu',
          'ea', "gj", "eiyy", "eizz",
        ]

    - step: "recovery"
      type: "cs"
      analysis: "fi"
      section_response:
        data_form: "list"
        cases:
          - displacement: [1.14e-05,1.92e-06,2.00e-3]  # U1, U2, U3
            load:
              - -6.960731065297227e-05  # F1
              - 0.00044668538601352393  # F2
              - 0.015870420038137607  # F3
              - 0.000229788237956122  # M1
              - 8.13244480333271e-06  # M2
              - -1.4022416078181857e-06  # M3
      output:
        file_name: "strength_ratio.yml"
        file_format: "yml"
        value: ['sr_min',]

# Configurations of design study, e.g., parameter study, optimization, etc.
# Mainly for Dakota
# ====================================================================
study:
  method:
    format: "keyword"
    multidim_parameter_study:
      partitions: [2, 1]
  variables:
    data_form: "explicit"
    list:
      - name: "ang_front"
        type: "continuous"
        bounds: [0, 10]
      - name: "ply_front"
        type: "discrete"
        space_type: "range"
        bounds: [1, 3]
  responses:
    data_form: "explicit"
    response_functions:
      - descriptor: 'mu'
      - descriptor: 'ea'
      - descriptor: 'sr_min'
      - descriptor: 'gj'
      - descriptor: 'eiyy'
      - descriptor: 'eizz'
  interface:
    fork:
      parameters_file: "input.in"
      results_file: "output.out"
      file_save: on
      work_directory:
        directory_tag: on
        directory_save: on
    required_files:
      - "files/*"

[unitasium]

It seems that the "recovery" step is not carried out. However, this file works fine on my machine. Can you try rerun this file in another clean directory?