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Hi everybody, I have a couple questions regarding ALE adaptive meshing. I was experiencing excessive distortion during my Abaqus analysis causing the job to abort. I was under the impression that using ALE adaptive meshing would be able to prevent this distortion from occurring. However, when...

thanks problem solved!

I forgot to add that along with the friction and damping contact properties I have also given a normal linear contact stiffness of 471N/mm. Please help!

Hi all, I am currently doing an impact simulation of a human skull and a rigid planar shell surface i.e. 'floor'. However I am getting an error message part way through the job. "The ratio of deformation speed to wave speed exceeds 1.0000 in at least one element. This usually indicates an...

Hi all, I am simulation a drop test. I am wondering if there is a way to find the location/position of a node or the centre of mass of a model with respect to a global coordinate system wrt time? I am hoping I can use this to find angular acceleration. Thanks

Hi all , I am quite new to abaqus and am wondering when applying a gravitational force to a falling object in the z direction would the force be -1 , as in -1g, or -9.81? Or because my model is in mm -9810? Thanks

Hi all, I was wondering if anyone could suggest a method for calculating the angular and linear acceleration from a hollow part during a drop test. I have attempted creating a set of the whole object to no avail. Is there a way to history output directly from the centre of mass? I have tried...

Hi all, Is it possible to create a datum point at the centre of mass of an object? I am looking to find the acceleration of an object during impact from the centre of mass. I thought creating a datum at the centre of mass then creating a history output at that point would be the best way to...

Hi all, I currently have 2 parts - 2 halves of a cycling helmet - that I need to make into one combined part. Is this possible? I have tried instancing the parts and merging them together. However this only allows me to merge them as a mesh. As this model needs to be exported to Simpleware to...

Hi all, I am looking to create a thin layer of multiple wires/thin metal strips. At first I would assume to do this one part would be created then using the linear pattern tool in the assembly to multiply the part. However I can only assume this would increase the computational demand far too...

Hi all, Is it possible to report maximum stress (V. Mises) for a particular surface as opposed to the maximum stress for the entire model? For my model I have an applied pressure to the top of a knee implant. I need to find the maximum stress for the entire model, which have been obtained, and...

Thanks guys! Both work as needed.

Hi all, Is it possible to report maximum stress (V. Mises) for a particular surface as opposed to the maximum stress for the entire model? For my model I have an applied pressure to the top of a knee implant. I need to find the maximum stress for the entire model, which have been obtained, and...

It would ideally be a solid element. Can you expand what you mean when you say perform Boolean operations? How would this be done. Thanks

In addition to this is there a way to select a thin section of elements and change their material properties, for instance if it had been cast that way.

Hi all, I am looking for the best method of modifying a solid structure on ABAQUS. Currently I have a model of a knee implant but I wish to implant a sensor/wire within the structure of the model as if it had been integrated during the casting process or such like. Would it be better to create...

ahh what a silly mistake. Thanks a lot!

here is the inp filehttp://files.engineering.com/getfile.aspx?folder=5a20ff42-057d-488f-b21e-bff20c911fb6&file=Descent.inp

here is the filehttp://files.engineering.com/getfile.aspx?folder=de9fb854-4a05-4a6d-ae4e-cbf66774953a&file=UHMWPE2segmented.cae

Hi, I am making a model of a knee implant. I have applied a 8000N pressure load to the tibial surface. After a while the analysis aborts and I get the error message Time increment required is less than the minimum specified This is the last part of the message file ***NOTE: THE RATE OF...