Good evening, I'm trying to simulate peristaltic pump working with fluid structure interaction module in 2D geometry. I have obtained the first deformation promoting the squeeze of the tube with prescribed displacement of the domain as boindary condition along x. Now with this solution I would like to promote deformation with prescribed displacement along y and so along the lenght of the tube but I have a strange deformation of the tube. It's like there is no sliding of the roller on the tube. geometry is shown in following. How it is possible to solve this problem? Thank you in advance for your support. I attached a gif animation that shows the problem without the first deformation but it is the same with that.
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