Overview of Microstructures and Crystal Plasticity Theory — Lesson 1

At microscopic length scales, the underlying microstructure of the material plays a significant role in the deformation behavior and mechanical response, which is captured by the crystal plasticity material model. In this video, we will understand the concept of microstructures, what it is, and how it is measured and represented. We will then discuss different types of crystal structures and how macroscopic plasticity is related to the microscopic slip of the material. Finally, we will introduce the crystal plasticity model, discuss how it uses the microstructure information, and compare its applicability with the continuum plasticity model. This will help us understand when and why a crystal plasticity simulation is needed.

Lecture

Alternate video link.

Video Highlights

00:24 – Introduction of microstructures

01:02 – Concept of microstructure, grains and grain boundaries

01:50 – How grain orientation is represented?

02:46 – Concept of crystal structure, plastic deformation and slip

04:44 – What is crystal plasticity model?

05:26 – When should I use crystal plasticity?

06:32 – Lesson summary