Depends on whether you want to believe the results for that element..
Please read the documentation given in Femap on how the Jacobian is calculated. Every pre-processor uses a different scale to make the results digestible.
In easy to digest terms, it is a measure of element distortion relative to an ideal element of the same topology. So if your'e looking at a quad element, it is comparing your quad to the ideal quadraliterial element.
The higher the distortion the less accurate the element stiffness matrix will be, also the value of the Jacabian determinant enters in many other FEM calculations. So using the FEMAP Jacobian fringe scale, it is best to have a Jacobian determinant near 0 for the most accurate results.
If the bad element is far away from areas where you want to read stress or strain values, you may be able to ignore it and not see much impact. But if the element is near an area of high stress gradient, or some place where you need to pull stresses, it should be fixed.
Well I am using 0.9 I have only 11 element distorted, when I use 0.8 I have 148 element and when I use 0.7 I have 585 Element distorted. Its quite normal the more I go close to zero the more element will distorted.
but my question is sir, How can I resolve my problem.
I want to have good element quality at 0.6. Could you please tell me how can I fix this issue.
Looking forward to hear from you soon.
First step is seeing if your model will pass the NX Nastran ELement Quality Check (assuming you will be using NX or MSC Nastran as your solver
Go to Tools > Check > Element Quality, then select all the elements in your model.
Select the NX Nastran Tab, select all the checkboxes, also select check fixup bad elements, run this check.
This will check your model using the same element quality checks NX Nastran will perform before running your model. If you get any failed elements using this check you can be sure you will have a fatal error in the real run.
If you could post a picture of your model that would help so we can see what element topology you are using: Quads, Tets?
Try moving around nodes using the Mesh>Locate option in the meshing toolbox. If you turn on the element quality fringe in the toolbox beforehand, it will update automatically as you move nodes arounds to fix the element distortion.
Sir, there are around 585 distorted element it will consume lot of time to repqir manully.
Is there any alternative way to fix all.
please attached find the pics
Sir, I already have 1 millions node and 2 million element if I use more finer mesh then It will be more time consuming.
I am very confused how to solve this problem.
I have system with 32 gb RAM and 4 gb invida graphics card.
I already performed simple linear and non linear static analysis test, both run successfully.
But when I check results, its not correct due to jacobian element 0.9. so thats why I wanted to choose 0.6 size but it says around 1500 element are distorted.
So If I m able to repair this 1500, then problem will be solved