Hello,
In relation to the above query, here is a detailed explanation of what I am trying to do with this FEA study. Basically, I am trying to analyze a scenario where a genset is placed onto a trailer and when in transit, how the Genset will move when sudden braking of trailer happens. For a better understanding, please see below a pic showing the model where genset has been placed onto the trailer:
When preparing the model for FEA, the "review geometry" function for trailer is working fine where it shows the bonded surfaces (default connection kept as bonded). However, for the genset model, I am having following errors when trying to use "review geometry":
Detected bonded interfaces between several mated solid surfaces.
Check your model for volume interference and/or add a contact interface.
Source: Geometry
I have rechecked for any components or surfaces overlapping for the genset assembly but could not find no more and I am still having the same issue. I am not sure what it actually means or how to resolve it. Please help me understand and solve this problem. How and when to use contact interfaces?
Please see attached here with the zip file for the model incase you want to give it a try. Any input will be highly appreciated.
Thanks 🙂
Hello,
I have now managed to solve some of the previous errors mentioned above, but still struggling with the mesh as it can not be created it says. Please see below some snips of the related meshing problem:
At present, the geometry tolerance settings are 0.01 mm (Absolute) for all and I am trying to mesh this 3D assembly altogether as shell pairs did not work with this assembly and did not want to waste time on the shells.
Please see attached the latest zip file for the assembly just in case anyone needs to get their hands over it. Any inputs will be highly appreciated.
Thanks 🙂
Hello all,
moving ahead and making progress with this, I have now simplified the genset floor model to even more extent eliminating the floor and just keeping the side rails with the lifting lugs on the sides of the genset. Now, we have a flat surface in contact with the trailer bed and I have used contact interfaces with assigning static and dynamic friction values for steel - steel. This helped me got rid of various errors in relation to the genset model but the trailer has still got issues with meshing. As it is made up of a lot of components in contact with each other however, they are not very easy to mesh even though I have now changed the accuracy levels to desired as suggested in the previous errors. This was done at the part level for all components that showed a significant difference between accuracy and tolerance values.
However, the trailer now with more and more components is facing an issue shown below when I try to mesh it.
Finally it says, only a partial set of elements were created and the mesh never gets completed.
Is there any other way of using a simplified trailer representation rather than this current complex trailer assembly? I was thinking maybe a flat bed or just a plane at the bottom of this genset base could work for the fraction as intended but it would not be as accurate as the weight of the genset will then not be accurately acting on the trailer with its loading capabilities?
Any other way if anyone could think of please guide. Any inputs will be highly appreciated. Attached is the zip model for the latest assembly.
Thanks 🙂
