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Showing posts with label Gauss points. Show all posts
Showing posts with label Gauss points. Show all posts

July 07, 2013

What is Gaussian Quadrature?

Gaussian quadrature is a method that replaces an integral by a sum. As an example, consider the following 1D integral:
Gaussian quadrature numerically integrates f(s) using a sum,

June 30, 2013

Steps to Derive k and Assemble into K

Figure 1 is a flowchart illustrating the sequence for computing the stiffness matrix of a simple problem (the concept is similar to more complex problems). Computing the stiffness matrix involves two main steps:
  1. Derive local stiffness matrices (k)
  2. Assemble k into K, the global stiffness matrix