INTRODUCTION Digital testing is the simulation of a physical test, the usage of finite detail analysis equipment, multi-body dynamic evaluation equipment and RPC new release strategies to derive correct masses, motion and damage records of vehicle system very early inside the improvement method Testing is a important activity for verifying and validating the overall performance , reliability, safety and sturdiness of a product. A capability design may be subject to mismatches with purchaser needs, technical layout faults, or problems regarding manufacturability and maintainability of the product . Testing is a primary manner to identify these troubles and consequently is primary to product development (PD) . checking out throughout the improvement system will increase self belief as it offers the designers with confidence inside the layout. however trying out is steeply-priced and time eating. lengthy trying out makes assembly tight challenge closing dates very volatile leaving little ...