Discussion Forum

Hi,everybody.Hi,DaXia.
I need your help.The problem is simple to you,but difficult to me.Thank you.

Question :In the model you build and solve an 2D axisymmetric model using the Solid Mechanics interface.The model contains an axisymmetric cylinder with cylinder cavity.The centers between the out and the inner cylinder are coincident.The radius of cylinder and cylinder cavity is 25mm,15mm respectively.The material chooses Linear Elastic Material.Young's modulus is 10MPa.Density is 1300kg/m3.Poisson's ratio is 0.49.The out boundary of the cylinder is prescribed displacement 0 in normal direction,the top boundary of the cylinder is setting Boundary Load with the type list Pressure,ranging from 0MPa to 5MPa,and the bottom boundary of the out cylinder is fixed.Then computing the stationary of the model deformation.However,when the load is gradually increased to some degree on the top boundary,the vertical boundary and the horizontal boundary of the inner cylinder may contact.If we use the contact pair in the model,sometimes the displacement of boundary may have some waves.The two boundaries may even intersect with each other.The contact surfaces are not transiting smoothly. How to solve stationary deformation which contains contact problem,or what should we notice during the progress of studying the contact problem.
If convenient,please solve the model and explain the problem,or give some advice.Best wishes for DaXia.Thank you!