Contour line of Effective strain

[hongfengtl]

We have 2D point coordinate before and after experiment(you can see the attachement), now we want to get the contour line of effective strain after deformation, is there any method or software to achieve it?
http://i1140.photobucket.com/albums/n579/hongfengtl/th_QQ20110915220516.jpg
http://i1140.photobucket.com/albums/n579/hongfengtl/th_QQ20110915220705.jpg

[Studiot]

Hello hongfengtl, welcome to Physics Forums.

Have you done any conformal mapping in maths?

[hongfengtl]

hello，we do not do the conformal mapping, we just do cold work for material.