Learning Forum

[Gijoys4v]

Hello Ansys,

How to adjust the aspect ratio in Ansys 19.1 workbench. Whether aspect ratio is the length to height ratio of element or length to width ratio of an element or it is the ratio of maximum edge length to minimum edge length of an element? which aspect ratio I have to select? where we can control this aspect ratio?

please help!

[Aniket]

Aspect ratios are calculated for faces as explained in the links:

https://ansyshelp.ansys.com/account/Secured?returnurl=/Views/Secured/corp/v195/wb_msh/msh_aspect_triangle.html

https://ansyshelp.ansys.com/account/Secured?returnurl=/Views/Secured/corp/v195/wb_msh/msh_aspect_quad.html

 

You can control aspect ratio either by multiple options by checking where you have offending aspect ratio elements. 

one can use target quality:

https://ansyshelp.ansys.com/account/Secured?returnurl=/Views/Secured/corp/v195/wb_msh/wb_msh_d5l_jw5_jw.html

 

or if it is due to inflation layers choose correct method of using first aspect ratio (https://ansyshelp.ansys.com/account/Secured?returnurl=/Views/Secured/corp/v195/wb_msh/msh_First_Aspect_Ratio.html) or last aspect ratio (https://ansyshelp.ansys.com/account/Secured?returnurl=/Views/Secured/corp/v195/wb_msh/msh_Aspect_Ratio_b_h.html).

Why do you want to control the aspect ratio and to what extent you want to control it?

-Aniket

Guidelines on the Student Community

How to access ANSYS help links

[Gijoys4v]

Hello Aniket,

thanks for the reply.

Iam trying to control it because 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.

[Gijoys4v]

How can I locate the offending element and correct it?

[Wenlong]

Hi Gijoys4v,

I just replied in your another post about how to locate the offending element, please check it there:

/forum/forums/topic/mesh-control-2/

Regards,

Wenlong