Hello to everyone
1- project : I am modeling fiction stir welding in direct couple analysis. this process is transient analysis. to aim this problem I utilized ANSYS mechanical apdl.I already modeled FSW using the simplified sample that is available in ANSYS 17 ( by excluding Pin and temperature dependent plasticity model ). Now by regarding a complete tool (shoulder and pin )and temperature dependent plasticity model I want to simulate FSW
2- the arisen problem: I made a log file carefully including all parameters ,loading ( plunge, dwell,welding), boundary conditions, material property etc. are required for the process. but in dwell stage after a penetration of 3.3mm some errors occur ( thermal loading and high distortion of element). it should be noted for starting of processes a penetration of 5.6mm is needed ( pin length is 5.5mm). I manipulated contact options and decrease load steps many times but the issue still remains, 3- note: some methods like NLADM( non linear adaptive meshing) suggested but this methods are capable of static analysis or we have some limitations in used element types. for me analysis type is transient and element type is solid226. solving this problem is so vital and crucial for me. any comment or suggestion about solving these arisen errors ( thermal loading and convergence)which has been attached, would be appreciated. Regards
You can use adaptive mesh from the mesh properties. In addition you can fine the place that include highly distorted elements and reduce its elemental size.
Hello Abdulaziz
thank you for your response
but as I mentioned in my question, adaptive mesh allows for static analysis, here analysis type is transient (ANSYS help).
anyway if you know any tutorial or any source in this context tell me, I would be grateful
regards
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