258 lines
9.9 KiB
Python
258 lines
9.9 KiB
Python
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"""
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NX Journal: Intelligent Model Discovery
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========================================
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This journal scans a .sim file and reports:
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- All solutions (names, types, solver types)
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- All expressions in the model (potential design variables)
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- FEM properties (mesh info, materials)
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- Output file locations
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Usage:
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run_journal.exe discover_model.py -- sim_file.sim
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Output:
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JSON to stdout with all discovered information
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"""
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import sys
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import json
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import NXOpen
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import NXOpen.CAE
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def discover_model(sim_path):
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"""Discover all information about an NX simulation model."""
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result = {
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'sim_file': sim_path,
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'success': False,
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'solutions': [],
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'expressions': [],
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'materials': [],
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'mesh_info': {},
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'linked_parts': [],
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'errors': []
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}
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try:
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theSession = NXOpen.Session.GetSession()
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# Set load options to load from the directory containing the sim file
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import os
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sim_dir = os.path.dirname(os.path.abspath(sim_path))
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sim_name = os.path.basename(sim_path)
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loadOptions = theSession.Parts.LoadOptions
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loadOptions.ComponentLoadMethod = NXOpen.LoadOptions.LoadComponents.AllComponents
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loadOptions.SetSearchDirectories([sim_dir])
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print(f"[DISCOVER] Opening simulation: {sim_path}", file=sys.stderr)
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# Open the simulation file
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basePart, partLoadStatus = theSession.Parts.OpenActiveDisplay(sim_path, NXOpen.DisplayPartOption.ReplaceExisting)
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partLoadStatus.Dispose()
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if basePart is None:
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result['errors'].append("Failed to open simulation file")
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print(json.dumps(result))
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return
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# Get the simulation part
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simPart = theSession.Parts.BaseWork
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# ============================================================
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# DISCOVER SOLUTIONS
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# ============================================================
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print(f"[DISCOVER] Scanning for solutions...", file=sys.stderr)
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try:
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simSimulation = simPart.Simulation
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# Try to find solutions by iterating through common naming patterns
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solution_patterns = [
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"Solution 1", "Solution 2", "Solution 3", "Solution 4", "Solution 5",
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"solution_1", "solution_2", "solution_3",
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"Static", "Modal", "Buckling", "Frequency Response",
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"Thermal", "Heat Transfer", "Transient",
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]
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found_solutions = []
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for pattern in solution_patterns:
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try:
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sol_obj_name = f"Solution[{pattern}]"
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sol = simSimulation.FindObject(sol_obj_name)
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if sol:
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sol_info = {
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'name': pattern,
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'object_name': sol_obj_name,
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'type': str(type(sol).__name__),
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}
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# Try to get solver type
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try:
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sol_info['solver'] = str(sol.SolutionType)
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except:
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pass
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# Try to get analysis type
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try:
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sol_info['analysis_type'] = str(sol.AnalysisType) if hasattr(sol, 'AnalysisType') else 'Unknown'
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except:
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pass
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found_solutions.append(sol_info)
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print(f"[DISCOVER] Found solution: {pattern}", file=sys.stderr)
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except:
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pass
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# Also try iterating by number (Solution 1, Solution 2, etc.)
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for i in range(1, 20):
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pattern = f"Solution {i}"
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if any(s['name'] == pattern for s in found_solutions):
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continue
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try:
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sol_obj_name = f"Solution[{pattern}]"
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sol = simSimulation.FindObject(sol_obj_name)
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if sol:
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sol_info = {
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'name': pattern,
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'object_name': sol_obj_name,
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'type': str(type(sol).__name__),
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}
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found_solutions.append(sol_info)
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print(f"[DISCOVER] Found solution: {pattern}", file=sys.stderr)
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except:
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break # Stop when we hit missing numbers
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result['solutions'] = found_solutions
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print(f"[DISCOVER] Found {len(found_solutions)} solution(s)", file=sys.stderr)
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except Exception as e:
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result['errors'].append(f"Error scanning solutions: {str(e)}")
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# ============================================================
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# DISCOVER EXPRESSIONS (Potential Design Variables)
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# ============================================================
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print(f"[DISCOVER] Scanning for expressions...", file=sys.stderr)
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try:
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# Find all linked parts (geometry parts)
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linked_parts = []
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# Check for common part naming patterns based on sim file name
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sim_base = os.path.splitext(sim_name)[0] # e.g., "Bracket_sim1"
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# Extract the base model name (remove _sim1, _fem1, etc.)
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import re
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base_match = re.match(r'(.+?)(?:_sim\d*|_fem\d*)?$', sim_base, re.IGNORECASE)
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if base_match:
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model_base = base_match.group(1) # e.g., "Bracket"
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else:
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model_base = sim_base
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print(f"[DISCOVER] Model base name: {model_base}", file=sys.stderr)
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# Look for the geometry part
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for part in theSession.Parts:
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part_name = part.Name if hasattr(part, 'Name') else str(part)
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# Check if this is a geometry part (not sim or fem)
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if model_base.lower() in part_name.lower():
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is_sim = '_sim' in part_name.lower() or part_name.lower().endswith('.sim')
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is_fem = '_fem' in part_name.lower() or part_name.lower().endswith('.fem')
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if not is_sim and not is_fem:
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linked_parts.append(part_name)
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print(f"[DISCOVER] Found geometry part: {part_name}", file=sys.stderr)
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# Get expressions from this part
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try:
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for expr in part.Expressions:
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expr_info = {
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'name': expr.Name,
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'value': expr.Value if hasattr(expr, 'Value') else None,
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'formula': expr.RightHandSide if hasattr(expr, 'RightHandSide') else None,
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'type': str(expr.Type) if hasattr(expr, 'Type') else 'Unknown',
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'units': str(expr.Units) if hasattr(expr, 'Units') else None,
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'part': part_name
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}
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# Filter out system expressions
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if not expr.Name.startswith('p') or not expr.Name[1:].isdigit():
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result['expressions'].append(expr_info)
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except Exception as e:
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result['errors'].append(f"Error reading expressions from {part_name}: {str(e)}")
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result['linked_parts'] = linked_parts
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print(f"[DISCOVER] Found {len(result['expressions'])} expression(s)", file=sys.stderr)
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except Exception as e:
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result['errors'].append(f"Error scanning expressions: {str(e)}")
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# ============================================================
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# DISCOVER MESH INFO
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# ============================================================
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print(f"[DISCOVER] Scanning for mesh info...", file=sys.stderr)
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try:
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# Look for FEM parts
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for part in theSession.Parts:
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part_name = part.Name if hasattr(part, 'Name') else str(part)
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if '_fem' in part_name.lower() or part_name.lower().endswith('.fem'):
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print(f"[DISCOVER] Found FEM part: {part_name}", file=sys.stderr)
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mesh_info = {
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'fem_part': part_name,
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'element_count': 0,
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'node_count': 0
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}
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# Try to get mesh statistics
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try:
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if hasattr(part, 'FEModel'):
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feModel = part.FEModel
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if feModel:
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# Get element count
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try:
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mesh_info['element_count'] = feModel.FeelementLabelMap.Size
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except:
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pass
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# Get node count
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try:
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mesh_info['node_count'] = feModel.FenodeLabelMap.Size
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except:
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pass
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except:
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pass
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result['mesh_info'] = mesh_info
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break
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except Exception as e:
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result['errors'].append(f"Error scanning mesh: {str(e)}")
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result['success'] = True
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print(f"[DISCOVER] Discovery complete!", file=sys.stderr)
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except Exception as e:
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result['errors'].append(f"Fatal error: {str(e)}")
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import traceback
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traceback.print_exc(file=sys.stderr)
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# Output JSON result to stdout
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print(json.dumps(result, indent=2))
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return result
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if __name__ == '__main__':
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if len(sys.argv) < 2:
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print(json.dumps({'success': False, 'error': 'No sim file specified'}))
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sys.exit(1)
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sim_path = sys.argv[1]
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discover_model(sim_path)
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