CSV Export

CSV Export

Description

Export curing simulation results to CSV with node coordinates and displacements. Invoke when user needs CSV output, data export, or result comparison.

Content

CSV Format

The exported CSV file uses the following column format:

Node,X,Y,Z,U1,U2,U3

• Node: Node label (integer)
• X, Y, Z: Node coordinates
• U1, U2, U3: Displacement components from the sp step last frame

Complete Export Script

import os
from abaqusConstants import *

work_dir = 'C:\\Users\\...\\work_directory'
recipes = ['P8_mold_recipe_1', 'P8_mold_recipe_2', 'P8_mold_recipe_3']

for name in recipes:
    odb_path = os.path.join(work_dir, name + '.odb')
    odb = session.openOdb(name=name+'_odb', path=odb_path, readOnly=True)

    inst = odb.rootAssembly.instances['P8-1']
    last_frame = odb.steps['sp'].frames[-1]
    u_field = last_frame.fieldOutputs['U']

    u_map = {}
    for val in u_field.values:
        u_map[val.nodeLabel] = (val.data[0], val.data[1], val.data[2])

    csv_path = os.path.join(work_dir, name + '.csv')
    lines = ['Node,X,Y,Z,U1,U2,U3']
    for node in inst.nodes:
        nid = node.label
        x, y, z = node.coordinates
        if nid in u_map:
            u1, u2, u3 = u_map[nid]
            lines.append('%d,%.6f,%.6f,%.6f,%.6f,%.6f,%.6f' % (nid, x, y, z, u1, u2, u3))

    with open(csv_path, 'w') as f:
        f.write('\n'.join(lines))
    odb.close()

Output Details

• 8-ply model: 5445 nodes exported
• 4-ply model: 3025 nodes exported
• Data is extracted from the sp step (springback) last frame, which represents the final deformation

Usage Scenarios

Comparing Ply Layups

Use the CSV output to compare different ply layup configurations:

• Symmetry analysis of deformation patterns
• Identifying maximum displacement locations
• Comparing springback magnitudes across recipes

Extending with Additional Fields

The script can be extended to include additional field outputs by adding more columns:

# Add stress (S) components
s_field = last_frame.fieldOutputs['S']
s_map = {}
for val in s_field.values:
    s_map[val.elementLabel] = val.data

# Add state variables (SDV1-4)
sdv1_field = last_frame.fieldOutputs['SDV1']
sdv1_map = {}
for val in sdv1_field.values:
    sdv1_map[val.elementLabel] = val.data

Available additional fields:

• S — Stress (6 components: S11, S22, S33, S12, S13, S23)
• PE — Plastic strain
• SDV1 to SDV4 — State variables

Notes

• Use the % operator for string formatting (Abaqus uses Python 2.7)
• Always close the ODB after processing each recipe
• The CSV files are saved in the same work directory as the ODB files
• Node coordinates are retrieved from instance.nodes, not from a COORD field output