Bingham plastics

Bingham plastics are materials that behave like solids at low stresses but flow like liquids when a certain threshold force, called the yield stress, is exceeded. Think of toothpaste: it stays put until you squeeze the tube hard enough, then it flows out smoothly. Examples include toothpaste, mud, and some sludges. This behavior is important in industries managing materials that need to stay put until a specific force causes them to move, making Bingham plastics useful in manufacturing and processing applications where controlled flow is essential.