Pick a tool and draw a closed profile. Rectangle: drag. Circle: drag from centre. Polygon: click vertices, click the first to close.
Extrude heightmmMaterial
Model orbit: drag · zoom: wheel / ±
Place
Boundary conditions & features
None placed. Pick a Place tool, then tap a face of the solid.
What is exact, what is not. Geometry and the mass / volume / area / surface readouts are computed exactly from your profile and extrude height. Boundary conditions you place are recorded with their coordinates and face normal — they are inputs for analysis, not solved results. Running real stress, heat, or flow fields on this solid needs a mesh generator and a numerical solver, which is the next, heavier rung. Exports below are real: DXF profile, OBJ solid, and a JSON of the full setup.
Modulus & yield come from the Material selector above. Fix / Force markers mark the built-in end and the loaded tip.
statusdraw → extrude → Solve
Assumptions & validity. Prismatic beam, isotropic linear-elastic material, small deflection (δ ≪ L), transverse point load at the free tip, plane sections remain plane, no shear deformation. Beam theory is accurate only for slender beams (length ≳ 10 × section depth) and stresses below yield — both are checked and flagged below. The moment of area is computed exactly from your sketched profile (true polygon / circle formula), so these numbers can be checked by hand: a rectangle b×h gives I = b·h³/12 and σ = 6PL/(b·h²).
Assumptions & validity. One-dimensional conduction in a homogeneous bar of length L, both ends held at T_s, uniform initial T_i, constant properties, no internal heat generation, insulated sides. Exact Fourier series θ(x,t)=Σ₍odd₎ (4/nπ)·sin(nπx/L)·e^(−(nπ/L)²αt), with α = k/(ρ·c_p). Check by hand: the centre cools as θ ≈ (4/π)·e^(−t/τ), τ = L²/(π²α); by Fourier number Fo = αt/L² ≈ 0.2 the centre has responded substantially.
Assumptions & validity. Ideal parallel plates, uniform field, fringing at the edges neglected (valid when plate size ≫ gap), linear homogeneous dielectric, electrostatic (no time variation). Closed form: E = V/d, C = κε₀A/d, energy U = ½CV². Check by hand: 100 V across a 1 mm gap is E = 100 kV/m exactly; ε₀ = 8.854×10⁻¹² F/m.