Module (multi-pulley)
Wrap angle $\theta = \pi \mp 2 \arcsin(|D_2-D_1|/(2C))$ (open/crossed); belt length $L = 2C + \frac{\pi(D_1+D_2)}{2} + \frac{(D_2-D_1)^2}{4C}$.
Documentation/Modules/Module
Module
Wrap angles and belt or chain length
Standards catalog
Validation: indicative · Method band: formula
Indicative method: Indicative closed-form or numerical model
Assumptions
- Linear elastic material behavior unless noted otherwise.
- User is responsible for load combinations and load factors per the selected design code.
Limitations
- Does not replace a licensed professional engineer or official code compliance review.
Engineering checks
| Check | IND | US | EU | ISO |
|---|---|---|---|---|
| Total belt length | implemented | — | — | — |
| Minimum wrap angle | implemented | — | — | — |
Module (
Maintainer note: Wrap angle and length layout.