---
title: Frameworks and Review
allDay: false
startTime: 12:30
endTime: 14:30
date: 2024-09-09
completed: null
type: single
---
# Introduction
Where do nonlinearities come from?
Well, a couple of places...
1. Geometric nonlinearities (pendulum)
2. External fields
3. Material properties
So we're stuck with them. But how do we deal with noninearities?