Project 1: [click here]
Due: Oct 28 (Friday) 1159pm
Submit only the final PDF file.
Thursday, September 29, 2016
Lecture 9 (Sep 29)
Attractor. Basin of attraction.
Damped-driven pendulum. Poincare section.
Movies:
Damped-driven pendulum. Poincare section.
Movies:
- Overdamped-undriven: [click here]
- Underdamped-undriven: [click here]
- Damped-driven pendulum for f=1.5, gamma=2/3:
- q=1.24: period-1 motion [click here]
- q=1.36: period-2 motion [click here]
- q=1.3725: period-4 motion [click here]
- q=1.3741: period-8 motion [click here]
- Poincare section for f=1.5, gamma=2/3 and q=4 with solutions at t=[10001:50000]*2pi/gamma: [click here] (computational time is around 2 mins).
Tuesday, September 27, 2016
Lecture 8 (Sep 27)
Linear stability analysis.
Thursday, September 22, 2016
Lecture 7 (Sep 22)
Simplification I: linear damped pendulum. Under-damped, over-damped, critically-damped. Phase diagram.
Simplification II: linear driven pendulum.
Simplification III: linear damped-driven pendulum.
Simplification IV: Nonlinear damped-undriven pendulum.
Simplification II: linear driven pendulum.
Simplification III: linear damped-driven pendulum.
Simplification IV: Nonlinear damped-undriven pendulum.
Tuesday, September 20, 2016
Lecture 6 (Sep 20)
Model for damped-driven nonlinear pendulum.
Dimensional analysis.
Tuesday, September 13, 2016
Lecture 4 (Sep 13)
Phase diagram or Phase portrait of the linear and nonlinear pendulum.
The forward Euler method and the Runge-Kutta methods for solving an ODE.
MATLAB demonstration for ODE solvers: [click here]
NOTE: In the lecture, I mentioned that HW1 will due Sep 30. But it should be Sep 23 (NEXT FRIDAY) as stated on the blog and the question paper. This leaves you two weeks between the deadlines of HW4 and Project 1 (which will due Oct 28).
The forward Euler method and the Runge-Kutta methods for solving an ODE.
MATLAB demonstration for ODE solvers: [click here]
NOTE: In the lecture, I mentioned that HW1 will due Sep 30. But it should be Sep 23 (NEXT FRIDAY) as stated on the blog and the question paper. This leaves you two weeks between the deadlines of HW4 and Project 1 (which will due Oct 28).
Monday, September 12, 2016
Thursday, September 8, 2016
Lecture 3 (Sep 8)
Approximation of the period of the nonlinear undamped-undriven pendulum system.
Phase space. Phase diagram or Phase portrait of the linear and nonlinear pendulum.
Phase space. Phase diagram or Phase portrait of the linear and nonlinear pendulum.
Tuesday, September 6, 2016
Lecture 2 (Sep 6)
Introduction to Mathematical Modeling
4 steps in doing modeling:
1. formulation of a problem: approximations and assumptions to develop, simplify and understanding the mathematical model;
2. solve the equation(s): analytically (usually with some simplification) and numerically;
3. interpretation of the mathematical results in the context of the physical problem;
4. prediction: see the limitation(s) of the mathematical model/theory.
Simple pendulum: derivation of the nonlinear ODE. small angle approximation. period for both the linear and nonlinear pendulum.
4 steps in doing modeling:
1. formulation of a problem: approximations and assumptions to develop, simplify and understanding the mathematical model;
2. solve the equation(s): analytically (usually with some simplification) and numerically;
3. interpretation of the mathematical results in the context of the physical problem;
4. prediction: see the limitation(s) of the mathematical model/theory.
Simple pendulum: derivation of the nonlinear ODE. small angle approximation. period for both the linear and nonlinear pendulum.
Thursday, September 1, 2016
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