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 ```python 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: ```python # 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