Strain

Strain

Strain is the ratio of change in dimension to original dimension.

### Formula

$$Strain=\frac{\Delta L}{L}$$

### Terminologies

- ΔL → Change in length.

- L → Original length.

### SI Unit

No unit

### Dimensions

$$[Strain]=[M^0L^0T^0]$$

### Conditions / Special Cases

Strain is dimensionless.

### Types of Strain

## Longitudinal Strain

$$\frac{\Delta L}{L}$$

## Volume Strain

$$\frac{\Delta V}{V}$$

## Shear Strain

$$\frac{x}{L}$$

### Usage

- Used in elasticity calculations.