Modeling wear involves repositioning contact surface nodes to simulate the material removal process. As a result, the element quality of the solid elements underlying the contact elements can quickly deteriorate. One way to improve the mesh is to use the nonlinear mesh adaptivity feature. A wear-based contact criterion triggers nonlinear mesh adaptivity whenever the mesh is distorted. The critical ratio between the amount of wear and the underlying solid element’s height is user-defined. When the criterion is reached, nonlinear mesh adaptivity is triggered

	Nonlinear Mesh Adaptive: Yes or No?
When Nonlinear Mesh Adaptive is activated:
	In this case adaptivity occurs whenever wear at any contact point exceeds 5% of the average height of the solid element. Each time the criterion is reached, the analysis is stopped, the mesh quality is improved by morphing the mesh

The result of the problem will be as follow

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