Browser-based engineering tools
Preliminary analysis,
fast.
XL4Sim is a growing collection of engineering modules built from decades of practical experience — for structural, thermal, dynamic, and rubber mechanics problems.
No installation. Clear assumptions. Practical outputs in minutes.
Built for engineers, designers, technicians, and students. Use for concept exploration and preliminary sizing.
What you can do here
- Structural: beams, frames, buckling, vibration, bolted joints
- Dynamics: drop shock, base excitation, vehicle dynamics
- Thermal: air and water heat sinks, HVAC load estimates
- Rubber Part Design: stiffness, molded shrinkage, shear strains, state-of-cure
- Design trade studies: fast parameter exploration
Tip: Start with the module directory if you're not sure where to begin.
Open the module directory →
Fast first-pass answers
Directional results in minutes to guide early design decisions — without setting up a full FEA model.
No installation
Runs entirely in the browser — accessible anywhere, easy to share. Some modules use WebGL; check get.webgl.org if needed.
Transparent methods
Assumptions and equations are visible so you can validate and trust the outputs.
Built for trade studies
Designed for quick iteration, scenario comparison, and concept exploration.
Module directory
Browse by discipline. Click any module to open it directly.
Structural & Mechanical
Dynamics
Thermal & Flow
Built on established engineering principles and years of practical experience.
Modules are intended for preliminary design, feasibility checks, and concept exploration. Results should be verified independently before use in safety-critical applications.
