What is an elastic deformation?

Elastic deformation is a reversible change to the shape of the material where it bends from the position and after the voltage is released. A common example can be seen in glasses with memory frames, which the wearer can bend or undulating in hand before relaxing, allowing them to spring back to their normal shape. This feature can be seen in various materials and the evaluation of the dividing line between elastic and plastic deformation, where the change in shape becomes permanent, is an important part of testing materials.

For many materials, elasticity is desirable. The ability to capture from relatively low stress can maintain materials durable and useful longer. Memory plastics, foams, metals and gels show this feature. The elasticity of the material allows him to recover from stress and restore normal functionality, although over time and in certain conditions the material can become fragile and may not show such a wide range of elastic deformation. Materials often become less pliable when colds or tuned chemistryLii that disrupt their elasticity.

With plastic deformation, the material changes permanently, even if it does not disappoint. It can also be a useful feature with some materials; For example, highway barriers are sometimes designed to cause under pressure from the car while staying in place, stopping cars without bouncing them back into the road. If the material fails due to stress, it can pose a risk. Materials with a low point of failure are said to be fragile.

Material testing can determine how much, if at all, the elastic deformation of the material shows. It is possible to tune the material configuration to increase elasticity. For example, with polymer plastics, special softening materials can be added to the mixture to bend and under pressure without permanently changing shape. Elastic deformation under pressure can be useful for things such as memory foam on seats that can bring under weight and spring back toThey suited another sitter.

too much elastic deformation can become a problem. In some materials, elasticity is not desirable and the material is more clear but stronger, so it can withstand tension. For example, in the building, a small amount of giving problems can prevent problems, but if the beams bend and bend wildly, it can damage other structural components in the building. This could create cracks in cladding, damage to electrical systems, uneven walls and floors, etc.