2D Frame & Truss FEM Solver

An interactive, scientific-grade 2D Finite Element Method (FEM) solver. Click, draw and analyze structures consisting of rigid frame members (undergoing axial, shear, and bending moments) and pin-jointed truss elements. Model custom supports and nodal or distributed loads to solve deflections and internal forces in real time.

X: 0.00m, Y: 0.00m
● Drawing mode active. Click and drag to create beams.
Nodes: 0 Members: 0 Max Deflection: 0.00 mm

Reaction Forces & Moments

Node ID Type R_x (kN) R_y (kN) Moment (kNm)
No constrained nodes or solver hasn't run yet.
How to model:
  • Draw: Click to start a node, drag and release to draw a member. Snaps to 0.5m grid.
  • Select: Click a node or element to edit support constraints, properties, or apply loads.
  • Reactions: Visible in real-time on screen at each support!

Preset Structures

Selection Properties

Click "Select" tool and click a node or member to inspect and apply loads/supports.

Global Element Defaults

Diagram Selection