Linear Traction Law

The Traction Law

This traction law applies a linearly increasing stress and it never fails.

Failure

This traction does not fail; as COD increases, the traction increases. If you want to model failure, use a |trangular traction law instead.

Traction Law Properties

The following properties are used to create a linear traction law:

Property	Description	Units	Default
stress	Enter constant normal stress. Use negative stress for a pressure loaded crack.	MPa	none
function	Alternatively, the stress can be entered as a user-defined function of time.	MPM	none

If a function is used, any entered stress property is ignored.