Dear
Thirupathi,
Blast analysis combined with forming might not be a good starting point since it is a highly-advanced process to simulate. Setting this subject as the ultimate target, you should expand your knowledge starting from the basics.
I suggest you to check the related DYNAmore Express video content on YouTube. To learn the LS-DYNA keywords and specific parameters in the keyword deck, always use the LS-DYNA manuals.
Best,
—Emin