CLASSIFICATION OF IMPACT PHENOMENON

Low Velocity

High Velocity

G lobal

Local

Modal Response

Low Frequency

High Frequency

Loading/Response time

Millie Sec- Seconds

Sub mille seconds

Strains

0.5-10 %

> 60%

Strain Rates

Pressures

Order of

10 –100

Failure Mode

Large Plastic Flow

Mat’l Separation