Simulations.

Explore real mechanical engineering systems. Adjust parameters, visualize the results, and understand the physics behind every change.

5 verified lab models

3 engineering categories

Featured simulation

Projectile Motion

Launch a projectile and see the relationship between gravity, initial velocity, range, maximum height and time of flight.

Launch Simulation View the Maths

Ideal, drag-free modelR = 63.7 mH = 15.9 m

Actual lab view · Default parameters

All Simulations (5)

Actual lab view · Default parameters

Motion

Projectile Motion

Launch an object, follow its trajectory, and explore velocity, gravity, range and height.

Trajectory and velocity vectors · Beginner

Actual lab view · Default parameters

Oscillations

Pendulum Dynamics

Explore nonlinear oscillation, period, velocity, energy, and the effect of length.

Swing arc and angular motion · Beginner

Actual lab view · Default parameters

Oscillations

Spring–Mass–Damper

Study vibrations, stiffness, damping and the decay of mechanical energy.

Spring assembly and response · Intermediate

SOLVER-DRIVEN STATIC EQUILIBRIUM3 members · 3 joints · pin A / roller B

MEMBER INSPECTOR

Inspect calculated axial forces

Static model · no fabricated motion

Axial member force-8.49 kN

Axial action (force sign)Compression

Diagonal inclination45.0°

Selected member length4.24 m

Estimated axial stress σ-8.49 MPa

Estimated axial strain ε-4.243e-5

Member extension ΔL-0.1800 mm

Crown vertical shift-0.3446 mm

Equilibrium checkRₐ + Rᵦ − P = 0.000000 kNBlue: tension · pink: compression. Axial stress assumes each member has A =1000 mm² and E = 200 GPa. The crown displacement is a small-strain linear elastic compatibility estimate; its deformation is NOT drawn at true scale. Neither stresses nor deflection establish buckling capacity, yield, joint design or structural safety.

PHYSICS MODELPin-jointed linear elastic triangleSolver-linked · Visual exaggeration identified in lab · Educational approximation

Actual lab view · Default parameters

Structures

Truss Analysis

Investigate forces in a three-member truss and distinguish tension from compression.

Structural members and reactions · Intermediate

SOLVER-DRIVEN ELASTIC BENDINGPin + roller · point load + uniform load

CROSS-SECTION INSPECTOR

Read shear, moment and deflection at any x

Displacement curve visually exaggerated

Measurement positionx = 3.00 m (50% of span)

Local shear V(x)-4.00 kN

Bending moment M(x)21.00 kN·m

Elastic deflection δ(x)43.594 mm

Flexural rigidity EI1.60e+6 N·m²

Nominal bending stress at x131.25 MPa

Maximum |bending stress|131.25 MPa

Equilibrium checkRₐ + Rᵦ − P − wL = 0.000000 kNPositive deflection is downward. At a concentrated load, shear is discontinuous; the reported value is the right-hand limit. Shear left-hand value: 4.00 kN.Nominal bending stress σ = M c / I with an assumed extreme-fiber distance c = 50.0 mm. The supplied section dimension and second moment I must describe the same real cross-section; otherwise the stress is not physically interpretable. Elastic linear bending only: no shear-strength, yield, stability, fatigue, code capacity or safety-factor prediction.

PHYSICS MODELEuler–Bernoulli elastic bendingSolver-linked · Visual exaggeration identified in lab · Educational approximation

Actual lab view · Default parameters

Structures

Beam Analysis

Move loads along a supported beam and analyze shear, moment and elastic deflection.

Loads, supports and bending curve · Intermediate