Hello Aspirant,

There are several books depending upon your grasping capacity,But  would prefer RAMAMURTHAM as it has lucid examples and the content written is easy to understand. Some other books are as well like

Sadhu singh

U C Jindal

Strength of materials’ book by- Rajput R K

Strength of Materials 2 Edition- by B. S. Basavarajaiah, P. Mahadevappa