Under the Display options, there is an option to show close vertices. This utilises an auto scale based on the bounding box of the model to determine whether vertices are close to each other, otherwise the user can put in a manual value. When you have the rectangular box included in the model, the total bounding box is significantly increased. The yellow lines are drawn between the vertices that Mechanical is detecting as close. If you are happy with your geometry, you can simply turn off the option to display close vertices.
for later releases, it is in the display ribbon tab.
for earlier releases, it is in the "Graphics Options" Toolbar. If you cannot see it, right click on the toolbar area and select it in the drop down menu.
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Answers
Why ı get this error yellow line, Without rectangular box ı dont have yellow line,what is the problem
Under the Display options, there is an option to show close vertices. This utilises an auto scale based on the bounding box of the model to determine whether vertices are close to each other, otherwise the user can put in a manual value. When you have the rectangular box included in the model, the total bounding box is significantly increased. The yellow lines are drawn between the vertices that Mechanical is detecting as close. If you are happy with your geometry, you can simply turn off the option to display close vertices.
where is display options, ı cant saw
for later releases, it is in the display ribbon tab.
for earlier releases, it is in the "Graphics Options" Toolbar. If you cannot see it, right click on the toolbar area and select it in the drop down menu.
I can solve a problem without a box, but when it's a box, it makes an error