[Python] Is there a way to convert wireframe models to solid, watertight exports for FEA

I've been trying to convert this wireframe into a solid 3d model for finite element analysis and I'm just lost. Here's the code and an image of the wireframe:

import numpy as np
import pyvoro
import matplotlib.pyplot as plt
from mpl_toolkits.mplot3d.art3d import Line3DCollection

# Initialize random number generator
rng = np.random.default_rng()

# Create a set of points in 3D
points = rng.uniform(size=(30,3))

# Compute the Voronoi tessellation
voronoi = pyvoro.compute_voronoi(points, [[0,1],[0,1],[0,1]], 15)

fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')

# Loop through each Voronoi cell and plot only edges
for vcell in voronoi:
vertices = np.array(vcell['vertices'])
edges = []

# Extract edges from faces
for face in vcell['faces']:
face_vertices = vertices[np.array(face['vertices'])]
for i in range(len(face_vertices)):
edge = [face_vertices, face_vertices[(i+1) % len(face_vertices)]]
edges.append(edge)

# Convert to a Line3DCollection and add to plot
wireframe = Line3DCollection(edges, colors='black', linewidths=0.5)
ax.add_collection3d(wireframe)

# Adjust plot limits
ax.set_xlim(0, 1)
ax.set_ylim(0, 1)
ax.set_zlim(0, 1)

plt.show()




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