Error : The ratio of deformation speed to wave speed exceeds 1.0000 in at least one element. This usually indicates an error with the model definition. Additional diagnostic information may be found in the message file.
Abaqus/Explicit Analysis exited with an error - Please see the status file for possible error messages if the file exists.
Warnings: The option *boundary,type=displacement has been used; check status file between steps for warnings on any jumps prescribed across the steps in displacement values of translational dof. For rotational dof make sure that there are no such jumps. All jumps in displacements across steps are ignored
There are 42 warning messages in the data (.dat) file. Please check the data file for possible errors in the input file.
Boundary conditions are defined at the nodes contained in node set WarnNodeBcIntersectKinCon. In addition the nodes are also part of a surface involved in kinematic contact. The kinematic contact constraint will be overridden by the boundary conditions in case of a conflict. Penalty contact may be used instead.
The nodes in node set WarnNodeCnsIntersectKinC are part of a kinematic contact surface definition as well as participate in a kinematic constraint (or distributing coupling). Nodes that participate in a kinematic constraint definition should not be used in a kinematic contact surface definition. If a degree-of-freedom participates in both types of constraints, the kinematic contact constraint will most often override the kinematic constraint. Abaqus/Explicit will not prevent the user from defining these conditions, but the resul
The ratio of deformation speed to wave speed in the elements in element set WarnElemDeformRateExceedsRatio-Step1 exceed the warning ratio. Refer to the status file for further details. This message is printed during the first applicable increment, but will not be printed during subsequent increments for the remainder of the step.
This looks like an elastic wave simulation. The error is that the particles or material is moving faster than the wave. Unless you have supersonic flow this shouldn't be happening. Have you got your units wrong somewhere? Is your wave amplitude much too big - the particle velocity is proportional to the amplitude (and to the frequency), so this will happen for very large amplitudes (or frequencies) unless there is something else that stops it first.
I'm working on PLA matrix renforced with kevlar composite
with the property in below
Why is the density of all your materials about 1 microgram per litre?
You converted it wrongly.
The density of water is close to1000 kg/m3
I'm pretty certain you should be using SI units, which are kg/m3.
That is almost certainly what the other parameters are based on.
Whatever your table tells you tonne/mm3 is not the SI unit of density.
If you do use that then you will need to change the values of all your other inputs such as Youngs modulus and yield strength to be in terms of tonnes and mm.
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