Hello,

- EXTENDED FINITE ELEMENT METHOD THEORY AND APPLICATIONS, Amir R. Khoei, Sharif University of Technology, Iran

- XFEM Fracture Analysis of Composites, S. Mohammadi, University of Tehran, Iran

Dear mam,

Try the below link. U can all related books.

https://www.researchgate.net/publication/235448181_Extended_Finite_Element_Method_For_Fracture_Analysis_of_Structures

I don't think you can get the book for free. But you can try following publications as alternatives

https://link.springer.com/book/10.1007/978-94-007-6680-8

Article Finite Element Model for Brittle Fracture and Fragmentation

Refer the link provided by Dr Saleemsab Doddamani

You may try to download on https://www.pdfdrive.com/

You can download the book https://lib-bkm.ru/12903

I'm afraid it is in Russian. However, the book is brilliant!