Update simulators/fenics_simulation.py

simulators/fenics_simulation.py

@@ -1 +1,64 @@
-q
+from fenics import *
+import numpy as np
+
+def run_fenics_simulation(simulation_type, **kwargs):
+    """
+    Run FEniCS simulation for the selected use case.
+
+    Parameters:
+        simulation_type (str): 'plate' or 'beam'.
+        kwargs: Input parameters such as length, width, thickness, force/load.
+
+    Returns:
+        stress (float): Calculated maximum stress (approx).
+        deformation (float): Total deformation (approx).
+    """
+    # Mesh setup
+    if simulation_type == "plate":
+        length, width, thickness = kwargs["length"], kwargs["width"], kwargs["thickness"]
+        mesh = BoxMesh(Point(0, 0, 0), Point(length, width, thickness), 10, 10, 2)
+        load = kwargs["force"]
+    elif simulation_type == "beam":
+        length, width, thickness = kwargs["length"], kwargs["width"], kwargs["thickness"]
+        mesh = BoxMesh(Point(0, 0, 0), Point(length, width, thickness), 10, 10, 2)
+        load = kwargs["load"]
+    else:
+        raise ValueError("Invalid simulation type selected.")
+
+    # Function space
+    V = VectorFunctionSpace(mesh, "P", 1)
+
+    # Trial and test functions
+    u = TrialFunction(V)
+    v = TestFunction(V)
+
+    # Material properties
+    E, nu = 2e11, 0.3  # Elastic modulus and Poisson's ratio
+    mu = E / (2.0 * (1.0 + nu))
+    lmbda = E * nu / ((1.0 + nu) * (1.0 - 2.0 * nu))
+
+    # Stress-strain relationship
+    def sigma(v):
+        return lmbda * nabla_div(v) * Identity(3) + 2 * mu * sym(grad(v))
+
+    # Load
+    f = Constant((-load, 0, 0))
+
+    # Variational form
+    a = inner(sigma(u), sym(grad(v))) * dx
+    L = dot(f, v) * dx
+
+    # Boundary conditions
+    def boundary(x, on_boundary):
+        return on_boundary and near(x[0], 0)
+
+    bc = DirichletBC(V, Constant((0, 0, 0)), boundary)
+
+    # Solve
+    u = Function(V)
+    solve(a == L, u, bc)
+
+    # Post-processing
+    stress = np.max(u.vector().get_local())  # Approximate stress
+    deformation = u.vector().norm("l2")  # Approximate deformation
+    return stress, deformation