Hello everybody
I'm doing some experimental research by the help of DIC method, But I have a huge problem that I hope someone can help me about that. After capturing my datas, I realized that there is a constant value of rigid body motion that is added to my real datas and so that all of my results seem to be wrong. I was wondering if anyone knows how to eliminate this rigid body motion ( translation or rotation) from my datas.
Thanks in Advance
Re: Elimination of Rigid Body Motion
Possibillities include:
1) Use a large-deformation strain measure (e.g. F^T F - I) that automatically gets rid of rotations and translations.
2) Calculate the deformation gradient (F) and use polar decomposition to find the rotation matrix. Use the rotation matrxi to correct your displaceements.