@negativevolume Hello, Yes it is working now. The material properties in the reference paper were wrong. I first switched it to a simple material mode...

@negativevolume thanks for your kind suggestions. I am following your comments and trying to simplify the problem and proceed step by step now.

@negativevolume yes material properties are mentioned. I am attaching the reference paper. Thank you for your guidance.  10.1515_secm-2021-003...

The screenshot of paper is attached for reference  IMG_20220702_211626.jpg

@negativevolume no but they mentioned that this contact card was used. I am a student so learning LSdyna but I am aware of basics n ran simple cases ...

@negativevolume I tried using the *Contact_automatic_surface_to_surface but the result is same. there is no specific reason for selcting the *Contact_...