rajan_prithivi's blog

https://doi.org/10.1016/j.matdes.2018.04.022

Highlights

1. Critical porosity is estimated in additively manufactured IN718 via crystal plasticity.

2. Porosity is characterized using high resolution tomography.

3. Non-local damage indicator parameters identify the location of fatigue crack initiation.

This VIDEO  gives a  very intuitive explanation of stress concentration  with an analogy and an experimental demonstration.

This video explains the concept of principal stresses using an experiment 

This video  contains an experimental demonstration of a simple bending and torsion and further speculate the nature of stresses induced by the respective loading scenarios

This video gives a basic introduction to von mises stress, which is widely used in the structural analysis & design.

This video gives a basic overview of the most fundamental hardening models of plasticity, which are the isotropic and kinematic hardening

Hope this helps!

- Prithivi

This video explains the very fundamental points with regard to plasticity theory. It covers the following -

1) Why study plasticity ?

2) Additive decomposition of strain

3) stress and strength

4) Yield condition , flow rule & hardening rule

-Prithivi

To obtain the principal planes we construct the stress tensor and find the eigen vectors. Here is an attempt to explain it more intuitively rather than the use of the formal mathematical method. Hope you enjoy this video!
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This is an educational outreach initiative targeted at all engineers interested in mechanics and seek simpler explanations. Kindly share if you learn something out of this !

Here is the link to the VIDEO

Here is my second video, where I tried to explain the concepts of stress state, principal stresses, Mohr circle and failure theories in layman's language and associated these concepts to explain the failure of a brittle material. This is an educational outreach initiative mainly targeted at the undergraduates (mechanical/civil/aerospace and materials engineering) studying mechanics and also other me

I tried to explain the concept of state of stress in a simple way, here is the link to the video - state of stress