Interactive Demo: A Data-Free Surrogate, Evaluated in Your Browser

The model below is a data-free surrogate for a 3D linear elasticity problem. It was produced by a single separated solve — not by running a sweep of simulations and fitting a network to the results. There is no training set, because there is no training.

The part is an imported CAD mounting bracket — roughly 120 × 94 × 107 mm, a bolted base plate carrying a ribbed upright — meshed into 20,382 linear tetrahedra over 5,565 nodes, of which the 3,956 on the surface are what you see. One solve of rank 4 took 13 minutes offline and covers every combination of the three sliders at once.

Two of those three axes turn out to be things you could have reasoned about: displacement is exactly proportional to the applied traction and exactly inverse in Young’s modulus, and because the load is a prescribed traction, von Mises stress does not depend on the modulus at all — slide E and watch the stress field sit still while the deflection halves. Poisson’s ratio is the one that redistributes rather than rescales: it remixes the four modes, and that is what the separated solve is actually buying.

Move the sliders. Every result you see is computed from scratch, in this page, in about a millisecond — nothing is precomputed and nothing is fetched from a server as you drag. The traction slider stops at 2 MPa, inside the 0–2000 MPa the solve covers, because even at 2 MPa the hot spot on this bracket is past the yield of structural steel, and linear elasticity has nothing true to say above that.