Learning Forum

[Gijoys4v]

Hello Ansys,

while simulating a model in Ansys work bench 19.1 I got an error like this

Element 2616 (type = 2, SOLID186) (and maybe other elements) has become   highly distorted.  Excessive distortion of elements is usually a          symptom indicating the need for corrective action elsewhere.  Try         incrementing the load more slowly (increase the number of substeps or     decrease the time step size).  You may need to improve your mesh to       obtain elements with better aspect ratios.  Also consider the behavior    of materials, contact pairs, and/or constraint equations.  Please rule    out other root causes of this failure before attempting rezoning or       nonlinear adaptive solutions.  If this message appears in the first       iteration of first substep, be sure to perform element shape checking.

but when I changed the mesh size from 0.25 mm to 0.26 mm it worked and i got the result. Why it happening like this. And how can I overcome this trial and error method to get the optimum mesh size. 

How can I locate the offending object and how can i correct that element. please tell me the procedure.

[Gijoys4v]

Now I come across another issue, I tried with different element size and I also changed the load step with the lowest possible (i gave 0.5mm displacement in 5 steps with minimum 100 substeps in each 0.1mm displacement) for the above mentioned error in another model. How can I rectify the issue. I only changed the width of the solved model say from 10mm to 10.1mm

[Wenlong]

Hi Gijoys4v,

You can check the element check violation elements by assigning an integer to the "Identify Element Violations" in the "Solution Information". Here I defined it as 2, if I run the simulation and do have element violations, the elements will be shown under "Solution Information"

Usually, there is no universal answer to element violation, it can be due to material properties, geometry imperfection, mesh properties, and so on. It would be helpful if you can provide more information about your model setup. (Please do not attach your model but only provide screenshots or text description, thanks!)

Regards,

Wenlong

 

[Wenlong]

Hi Gijoys4v,

Another way to locate the offending element is to find the element by ID. In the error message, it shows the element ID that's violating the element shape check, so you can locate that element by clicking "Selection" -> "Mesh by ID", as shown below. Note that I am using a newer version of Workbench that has a different interface, but your version should also have this function. 

Regards,

Wenlong

[Gijoys4v]

Hallo ansys How can I rectify the issue of offending or distorted elements and continue my simulation

[Gijoys4v]

I cannot run the simulation eventhough I adjusted the element size

[Gijoys4v]

Consistently I am getting element formulation error for any element size. Please help me to get out of this issue.

My model is given below. It is a 4 layered thin film

[Eashwar Raaj]

I also Encountered Such error , But even after Meshing changes this error again arrived , So please anybody help me with issue