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import re
import subprocess
import xml.etree.ElementTree as ET
DESKTOP = Path(r"C:\Users\user\Desktop")
EXEC_FILE = r"C:\Program Files\ANSYS Inc\v261\ansys\bin\winx64\ANSYS261.exe"
MAPDL_PORT = 50112
JOBNAME = "eval_wb_transient"
WBPJ_FILE = DESKTOP / "wb_transient.wbpj"
DB_FILE = DESKTOP / "wb_transient.db"
RESULT_FILE = DESKTOP / "wb_transient.rst"
REQUIRED_FILES = [WBPJ_FILE, DB_FILE, RESULT_FILE]
def is_nonempty_file(path: Path) -> bool:
return path.exists() and path.is_file() and path.stat().st_size > 0
def is_workbench_project(path: Path) -> bool:
try:
root = ET.parse(path).getroot()
except (OSError, ET.ParseError):
return False
if root.tag != "Storage":
return False
project = root.find("Project")
if project is None:
return False
values = {
child.tag: (child.text or "").strip()
for child in project
if child.text
}
if values.get("project-type") != "WB2":
return False
if values.get("external-version-string") != "2026 R1":
return False
if root.find("Addins") is None or root.find("Containers") is None:
return False
has_project_reference = False
has_transient_system = False
for obj in root.findall(".//Object"):
class_type = (obj.findtext("class-type") or "").strip()
member_data = (obj.findtext("member-data") or "").strip()
object_name = obj.attrib.get("Name", "")
if (
class_type == "FileReference"
and '"DisplayText": "wb_transient.wbpj"' in member_data
and '"Location": "$(ProjectName).wbpj"' in member_data
):
has_project_reference = True
if object_name.startswith("/Schematic/") and class_type in {"System", "Component"}:
if "Transient Structural" in member_data or "Mechanical APDL" in member_data:
has_transient_system = True
return has_project_reference and has_transient_system
def allsel(mapdl) -> None:
mapdl.run("ALLSEL,ALL")
def node_at(mapdl, x: float, y: float, z: float, tol: float = 1e-3) -> int:
allsel(mapdl)
mapdl.nsel("S", "LOC", "X", x - tol, x + tol)
mapdl.nsel("R", "LOC", "Y", y - tol, y + tol)
mapdl.nsel("R", "LOC", "Z", z - tol, z + tol)
node = int(mapdl.get_value("NODE", 0, "NUM", "MIN"))
allsel(mapdl)
if node < 1:
raise RuntimeError(f"No node found near ({x}, {y}, {z}).")
return node
def _listing_value(text: str, label: str) -> float:
match = re.search(
rf"^\s*{re.escape(label)}\s*=\s*([-+]?\d+(?:\.\d*)?(?:[Ee][-+]?\d+)?)",
text,
flags=re.I | re.M,
)
if not match:
raise RuntimeError(f"{label} not found in MAPDL listing")
return float(match.group(1))
def model_is_valid(mapdl) -> bool:
allsel(mapdl)
nodes = mapdl.mesh.nodes
if nodes is None or not (21 <= len(nodes) <= 61):
return False
if int(mapdl.get_value("ELEM", 0, "COUNT")) != 20:
return False
element_types = str(mapdl.etlist()).upper()
if not any(name in element_types for name in ("BEAM188", "BEAM189")):
return False
xs = [float(row[0]) for row in nodes]
ys = [float(row[1]) for row in nodes]
zs = [float(row[2]) for row in nodes]
if abs(min(xs)) > 1e-4 or abs(max(xs) - 1000.0) > 1e-4:
return False
if max(abs(value) for value in ys + zs) > 1e-4:
return False
reference_nodes = [node_at(mapdl, x, 0.0, 0.0, tol=1e-4) for x in range(0, 1001, 50)]
if len(set(reference_nodes)) != 21:
return False
section = str(mapdl.slist("ALL"))
if "BEAM SECTION SUBTYPE: RECTANGLE" not in section.upper():
return False
if abs(_listing_value(section, "Area") - 400.0) > 0.1:
return False
if abs(_listing_value(section, "Iyy") - 13333.3333) > 2.0:
return False
if abs(_listing_value(section, "Izz") - 13333.3333) > 2.0:
return False
material = str(mapdl.run("MPLIST,1,ALL"))
material_values = {}
for label in ("EX", "NUXY", "PRXY", "DENS"):
match = re.search(
rf"^\s*TEMP\s+{label}\s*$\s*([-+]?\d+(?:\.\d*)?(?:[Ee][-+]?\d+)?)",
material,
flags=re.I | re.M,
)
if match:
material_values[label] = float(match.group(1))
if abs(material_values.get("EX", 0.0) - 210000.0) > 1.0:
return False
poisson = material_values.get("PRXY", material_values.get("NUXY", 0.0))
if abs(poisson - 0.3) > 1e-6:
return False
if abs(material_values.get("DENS", 0.0) - 7.85e-9) > 1e-12:
return False
constraints = str(mapdl.dlist("ALL"))
rows = re.findall(
r"^\s*(\d+)\s+(UX|UY|UZ|ROTX|ROTY|ROTZ)\s+([-+]?\d+(?:\.\d*)?(?:[Ee][-+]?\d+)?)",
constraints,
flags=re.M,
)
actual_constraints = {(int(node), label, float(value)) for node, label, value in rows}
left, right = reference_nodes[0], reference_nodes[-1]
expected_constraints = {
(left, "UX", 0.0), (left, "UY", 0.0), (left, "UZ", 0.0),
(right, "UY", 0.0), (right, "UZ", 0.0),
}
if actual_constraints != expected_constraints:
return False
midpoint = reference_nodes[10]
loads = str(mapdl.flist("ALL"))
force_rows = re.findall(
r"^\s*(\d+)\s+(FX|FY|FZ|MX|MY|MZ)\s+([-+]?\d+(?:\.\d*)?(?:[Ee][-+]?\d+)?)",
loads,
flags=re.M,
)
if [(int(node), label, float(value)) for node, label, value in force_rows] != [(midpoint, "FY", -1000.0)]:
return False
mapdl.finish()
mapdl.slashsolu()
status = str(mapdl.run("/STATUS,SOLU")).upper()
mapdl.finish()
required_status = (
"ANALYSIS TYPE", "TRANSIENT", "SOLUTION METHOD", "FULL",
"NONLINEAR GEOMETRIC EFFECTS", "ON", "STEP CHANGE BOUNDARY CONDITIONS",
"YES", "DATABASE OUTPUT CONTROLS", "ALL ALL",
)
return all(token in status for token in required_status) and "RAYLEIGH DAMPING MULTIPLIERS" not in status
def extract_predictions(mapdl) -> dict:
mapdl.resume(DB_FILE.stem, "db")
if not model_is_valid(mapdl):
raise RuntimeError("beam model does not match the instruction")
mapdl.post1()
mapdl.file(RESULT_FILE.stem, RESULT_FILE.suffix.lstrip("."))
mid_node = node_at(mapdl, x=500.0, y=0.0, z=0.0)
history = []
for substep in range(1, 500):
try:
mapdl.set(1, substep)
time_s = float(mapdl.get_value("ACTIVE", 0, "SET", "TIME"))
uy = float(mapdl.get_value("NODE", mid_node, "U", "Y"))
except Exception:
break
if history and abs(time_s - history[-1][0]) <= 1e-12:
break
history.append((time_s, uy))
if not history:
raise RuntimeError("No transient result set extracted.")
if len(history) != 50:
raise RuntimeError("Transient result file must contain exactly 50 saved steps.")
for index, (time_s, _) in enumerate(history, start=1):
if abs(time_s - index * 0.001) > 1e-8:
raise RuntimeError("Transient result times must be 0.001 through 0.050 s.")
mapdl.set("LAST")
final_time = float(mapdl.get_value("ACTIVE", 0, "SET", "TIME"))
if abs(final_time - 0.05) > 1e-8:
raise RuntimeError("Final transient result time must be 0.05 s.")
final_uy = float(mapdl.get_value("NODE", mid_node, "U", "Y"))
peak_uy = min(v for _, v in history)
peak_uy = min(peak_uy, final_uy)
return {
"peak_midspan_uy_mm": peak_uy,
"final_midspan_uy_mm": final_uy,
"final_time_s": final_time,
}
def _kill_ansys_related() -> None:
for target in (
"ANSYS261.exe",
"ansys261.exe",
"ANSYS.exe",
"ansys.exe",
"fluent.exe",
"Fluent.exe",
"cortex.exe",
"Cortex.exe",
):
try:
subprocess.run(
["taskkill", "/F", "/IM", target],
capture_output=True,
creationflags=0x08000000,
)
except Exception:
pass
def _coord_span(arr, axis: int):
values = [float(v[axis]) for v in arr]
return min(values), max(values)
def _within(value: float, target: float, tol: float) -> bool:
return abs(value - target) <= tol
def _check_bounds_from_instruction(mapdl, task_name: str) -> bool:
nodes = mapdl.mesh.nodes
if nodes is None or len(nodes) < 2:
return False
xmin, xmax = _coord_span(nodes, 0)
ymin, ymax = _coord_span(nodes, 1)
zmin, zmax = _coord_span(nodes, 2)
if task_name == "task-01":
return _within(xmin, 0.0, 1e-2) and _within(xmax, 10.0, 1e-1) and _within(ymin, 0.0, 1e-2) and _within(ymax, 10.0, 1e-1) and _within(zmin, 0.0, 1e-2) and _within(zmax, 100.0, 1e-1)
if task_name == "task-02":
return _within(xmin, 0.0, 1e-2) and _within(xmax, 50.0, 1e-1) and _within(ymin, 0.0, 1e-2) and _within(ymax, 1.0, 1e-1)
if task_name == "task-03":
return _within(xmin, 0.0, 1e-2) and _within(xmax, 100.0, 1e-1) and _within(ymin, 0.0, 1e-2) and _within(ymax, 200.0, 1e-1)
if task_name == "task-04":
return _within(xmin, 0.0, 1e-2) and _within(xmax, 50.0, 1e-1) and _within(ymin, 0.0, 1e-2) and _within(ymax, 20.0, 1e-1) and _within(zmin, 0.0, 1e-2) and _within(zmax, 20.0, 1e-1)
if task_name == "task-05":
return _within(xmin, 0.0, 1e-2) and _within(xmax, 500.0, 5e-1)
if task_name == "task-06":
return _within(xmin, 25.0, 1e-1) and _within(xmax, 50.0, 1e-1) and _within(ymin, 0.0, 1e-2) and _within(ymax, 10.0, 1e-1)
if task_name == "task-07":
return _within(xmin, 0.0, 1e-2) and _within(xmax, 100.0, 1e-1) and _within(ymin, 0.0, 1e-2) and _within(ymax, 10.0, 1e-1) and _within(zmin, 0.0, 1e-2) and _within(zmax, 10.0, 1e-1)
if task_name == "task-08":
return _within(xmin, 0.0, 1e-2) and _within(xmax, 100.0, 1e-1) and _within(ymin, 0.0, 1e-2) and _within(ymax, 10.0, 1e-1) and _within(zmin, 0.0, 1e-2) and _within(zmax, 10.0, 1e-1)
if task_name == "task-11":
return (xmax - xmin) > 10.0 and (ymax - ymin) > 10.0 and (zmax - zmin) > 10.0
if task_name == "task-12":
return _within(xmin, 0.0, 1e-2) and _within(xmax, 1000.0, 5e-1)
if task_name == "task-13":
return _within(ymin, 0.0, 1e-2) and _within(ymax, 50.0, 2e-1)
if task_name == "task-14":
return _within(xmin, 0.0, 1e-2) and _within(xmax, 500.0, 5e-1)
if task_name == "task-18":
return _within(xmin, 0.0, 1e-2) and _within(xmax, 100.0, 2e-1) and _within(ymin, 0.0, 1e-2) and _within(ymax, 100.0, 2e-1)
if task_name == "task-19":
return _within(ymin, 0.0, 1e-2) and _within(ymax, 1000.0, 5e-1)
if task_name == "task-20":
return _within(xmin, 0.0, 1e-2) and _within(xmax, 100.0, 1e-1) and _within(ymin, 0.0, 1e-2) and _within(ymax, 10.0, 1e-1) and _within(zmin, 0.0, 1e-2) and _within(zmax, 10.0, 1e-1)
return True
def passes_process_checks(mapdl, pred: dict, task_name: str) -> bool:
mapdl.resume(DB_FILE.stem, "db")
if not _check_bounds_from_instruction(mapdl, task_name):
return False
mapdl.post1()
mapdl.file(RESULT_FILE.stem, RESULT_FILE.suffix.lstrip("."))
try:
mapdl.set("LAST")
except Exception:
try:
mapdl.set(1, 1)
except Exception:
return False
for key, val in pred.items():
try:
x = float(val)
except Exception:
return False
lk = key.lower()
if "temp" in lk and not (-1000.0 <= x <= 5000.0):
return False
if "freq" in lk and not (x > 0.0):
return False
if "reaction" in lk and abs(x) < 1e-9:
return False
if ("uy" in lk or "uz" in lk or "ux" in lk or "rot" in lk) and not (-1e6 <= x <= 1e6):
return False
if ("von_mises" in lk or "seqv" in lk or "stress" in lk) and abs(x) < 1e-9:
return False
if "final_time" in lk and not (x > 0.0):
return False
return True
def evaluate() -> bool:
_kill_ansys_related()
if any(not is_nonempty_file(p) for p in REQUIRED_FILES):
return False
if not is_workbench_project(WBPJ_FILE):
return False
mapdl = None
ok = False
try:
from ansys.mapdl.core import launch_mapdl
mapdl = launch_mapdl(
exec_file=EXEC_FILE,
jobname=JOBNAME,
run_location=str(DESKTOP),
nproc=1,
port=MAPDL_PORT,
override=True,
)
pred = extract_predictions(mapdl)
ok = passes_process_checks(mapdl, pred, task_name="task-12")
except Exception:
ok = False
finally:
if mapdl is not None:
try:
mapdl.exit()
except Exception:
pass
return ok
def main() -> None:
print("True" if evaluate() else "False")
if __name__ == "__main__":
main()
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