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Multibody dynamics · in your browser

BriskFyr Documentation

Model, solve and measure mechanisms — multibody dynamics simulation for mechanical, automotive and aerospace engineers.

Explore the docs

  •  Concepts

    The ideas behind the tool — degrees of freedom, joints as constraints, drive laws, damping, frames and units, and how to validate a model.

    Concepts overview

  •  Reference

    Component-by-component specs for every node, joint, load and element you can add to a model. (Being built out.)

    Reference overview

  •  Workspace

    The browser app itself — the toolbar, viewport controls, panels, and how to run and review a simulation. (Being built out.)

    Workspace overview

  •  Tutorials

    Six guided, physics-validated builds that take you from a single falling body to a measured, working mechanism.

    Tutorials overview

Tutorials

  •  1 · Your First Simulation

    Build, solve and play back a falling body. Meets every part of the workspace. Validated against free fall, s = ½gt².

    Open Tutorial 1

  •  2 · Build a Pendulum

    Add your first joint and a body becomes a mechanism. Validated against the pendulum period, T = 2π√(L/g).

    Open Tutorial 2

  •  3 · A Tour of Joints

    Revolute vs Prismatic vs Spherical — see degrees of freedom in motion, one distinct movement per DOF count.

    Open Tutorial 3

  •  4 · Springs & Dampers

    Force elements: oscillation and damping. Validated against ωₙ = √(k/m) and the damping ratio ζ.

    Open Tutorial 4

  •  5 · Forces, Torques & Drive Laws

    Apply loads and shape them over time. Validated against a = F/m and α = τ/I.

    Open Tutorial 5

  •  6 · Markers & Requests

    Measure results as exact numbers — rigid-link distance, swing angle, joint reaction — and export them.

    Open Tutorial 6

What is BriskFyr?

BriskFyr is a cloud-native engineering-simulation suite. Its first capability is multibody dynamics (MBD) — the rigid-body motion of linked mechanisms: linkages, suspensions, mechanisms, gear trains, and anything built from bodies connected by joints, springs, dampers and driven loads.

You author the model in the browser, the solve runs on managed compute, and results stream back as an animation you can scrub, plus reaction overlays and named measurement channels you can read and export. Finite-element (FEA) and computational-fluid-dynamics (CFD) capabilities are planned on the same platform.

This documentation is a work in progress

Six tutorials, a Getting Started quickstart, and a Concepts primer are live today; the full component reference and workspace guide are being built out next, plus worked validation benchmarks down the line.