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# FEA Theory

## Basic FEA Theory – Part 5 – Solve For Displacements

Last article is in my series on basic FEA theory. In this article I put everything together to solve for the displacements.

## Basic FEA Theory – Part 4 – Element Stiffness Matrix

This article is part 4 in my series on basic FEA theory. The focus is on how to calculate the element stiffness matrix.

## Basic FEA Theory – Part 3 – Strain Calculation

The article shows how to calculate the strain components from the nodal displacements in a linear finite element calculation.

## Basic FEA Theory – Part 2 – Isoparametric Shape Functions

The focus of this article is on how isoparametric shape functions can be used to simplify the calculation of the principle of virtual work.

## Basic FEA Theory – Part 1 – Principle of Virtual Work

Derivation of the equation of virtual work in discretized form. The presented results are the foundation to the Finite Element method.

## Full Finite Element Solver in 200 Lines of Python

Tutorial on how to write a full FE solver in 200 lines of Python code. This is part 2 in our series. The focus is on using an external file.

## Full Finite Element Solver in 100 Lines of Python

Tutorial on how to write a full FE solver in 100 lines of Python. This is part one of this tutorial series.