October 12, 2020 at 7:48 pmbobsik641Subscriber
I'm conducting a 2D plane strain machining simulation in Explicit Dynamics. The program fails to detect the contact between the cutter (rigid) and the specimen (explicit Ti alloy). At first, I thought it could be due to the mesh being too coarse. So I refined the grid near the interface, but the contact is still missed.
Any ideas how to solve that?
I don't need the mesh to be super fine for now, this is just a "test case"/"test setup"October 15, 2020 at 7:49 pmMissy JiAnsys EmployeeIt seems the contact was detected initially, so the workpieces got the deformation and elements removed, did you use mass scaling, how much mass scaling you are using, what is the time step you used?nmaybe you can post the energy summary here.nOctober 16, 2020 at 7:57 pmbobsik641SubscriberNo mass scaling, timestep program controlled. nActually, there's a problem with contact detection at the tip of the cutter. Take a look at the animation- uploading .mp4 files is not permitted, so I just zipped it .nnnOctober 19, 2020 at 3:18 pmbobsik641SubscriberAny ideas on what could be the cause of this problem?nOctober 22, 2020 at 8:47 ambobsik641SubscriberI forgot to turn erosion on material failure ON, the default max plastic strain=1.5 caused too much plastic flow and the contact detection failed. Now it's fine.nViewing 4 reply threads
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