A structural engineering tool built from scratch: define a beam, its supports and its loads, and watch the shear force diagram, bending moment diagram and deflected shape update live — computed analytically, not simulated.
⚙️ How it works: reactions come from static equilibrium (ΣF=0, ΣM=0). Shear V(x) and moment M(x) are built by summing each load's contribution up to x. Deflection uses Macaulay's method: integrating M(x)/EI twice in closed form, with the two integration constants solved from the boundary conditions of the chosen support. No numerical approximation — every value is exact for the loads and beam shown.