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Assignments and schedule |
Schedule. [Reading assignments]:
- 9/26/11: Introduction
- 9/28/11: Questionnaire. [Handout (Johnson's book)].
Introduce variational and FE formulation of 2-pt BVP, L^p spaces.
- 9/30/11: Weak derivatives, Sobolev spaces.
[Read: Chapter I for general review/background. Chapter II.1]
Assignment 1 due 10/17/11.
- 10/3/11: Sobolev spaces as inner product spaces. Poincare-Friedrichs inequality
Basic error estimate for conforming FE formulation of the model problem:
Galerkin orthogonality, Cea's lemma.
- 10/5/11: Matrix-vector form of the FE formulation of the model problem.
Positive definite matrices. Bilinear forms and Lax-Milgram Theorem.
[Read: Chapter II.1-2]
- 10/7/11: meet in MLC computer lab, KIdd 108C, 8:30-10:00.
Assignment 2 (lab) due 10/17/11 (new date).
Latex file for assignment 2 (lab1).
- 10/10/11: Continue discussion of FE formulation of the model problem,
tools (e.g, numerical integration) needed to solve the computational problems.
Variational and FE formulation of general BVP for elliptic PDEs in d=1,2,3
including nonsymmetric and those with Neumann and other boundary conditions.
Minimization principle and Ritz method.
[Read: Chapter II.2-4].
- 10/12/11 continued ...
- 10/14/11: Error estimate using a(.,.) for conforming FE (Galerkin
orthogonality, Cea's lemma, interpolation). Triangulation of the
domain; construction of V_h. [Read: Chapter II.2-5]
- 10/17/11: Piecewise polynomials in V_h: construction and
how to make it conforming. [Read: Chapter II.5,6]
- 10/19/11: Spaces P_k and Q_k. Affine transformations. Reference
element calculations. [Chapter II.6 and II.8]
- 10/21/11: Element stiffness matrices. [Chapter II.8]
- 10/24/11: Bramble-Hilbert lemma and interpolation estimates [II.6]
- 10/26/11: meet in MLC computer lab, Kidd 108C, 8:30-10:00.
Assignment 3 (lab2) due 11/7/11.
Latex file for assignment 3 (lab2).
Code that you may find useful
Extra : lookup other quadrature formulas on triangles or quadrilaterals
(in the book by O. Zienkiewicz, Finite Elements in Engrg Science, 1971)
- 10/28: Duality theory (Aubin-Nitzsche trick). [Read Chapter II.7]
- 10/31: Superconvergence, Green's functions
- 11/2: Interpolation theory for quadrilateral elements. [Chapter
II.6] FE computations for general elliptic BVP (general conductivity
tensor).
- 11/4: FE computations for general elliptic BVP (low order terms,
general boundary conditions).
- 11/7: continued.
Assignment 4 due 11/28/11.
Latex file for assignment 4 .
- 11/9: FE computations for problems with first order derivatives
- 11/11: structure of FE code; L^2 and H_0^1 projections.
- 11/14: meet in MLC computer lab
- 11/16: no class
- 11/18: L^2 projections and estimates. [Chapter II.7]. Clement quasi-interpolant. [Chapter II.6.8]
- 11/21: A-posteriori estimation; general ideas and Richardson extrapolation.
- 11/23: HW hints ... residual a-posterior estimator. [Read Chapter III.8]
- 11/28: Bank-Weiser/Oden estimator. Mesh adaptivity.
- 11/30: Mixed methods for Poisson's equation. [Read overview from Chapter III.4-5]
Final Assignment due 12/9/11 10:00am.
- 12/2: Recap.
Finite Element Holiday ornament made from students' final
project results.
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