October 18, 2023 at 5:13 amhansenliSubscriber
I received this error when I tried to use MAT295 for an SPH section:
Error 30281 (INI+281)
Material number 1
material type 295 is not implemented
Is that this model is not compatible with SPH section? Do you have other methods to incooperate the volumetric effect into a hyperelastic model for bio related material?
October 18, 2023 at 2:15 pmRam GopisettiAnsys Employee
Check the following link for compatible material model for SPH
*MAT_176 can be the potential candidate.
October 18, 2023 at 3:41 pmJim DayAnsys EmployeeHyperelastic materials and SPH typically don’t go together very well. SPH suffers from tensile instability, which means the material will have a tendency to break apart instead of deforming in tension. And as Ram mentioned, dynamat (based on information at the beginning of the *MAT section of the LS-DYNA User's Manual) indicates that SPH can't be used for MAT_295. If you're intent on using MAT_295, you could instead try EFG or SPG.
October 19, 2023 at 4:12 amhansenliSubscriber
Thank you for your advice! SPG cannot be used for MAT_295 either. Is there an update about this in the latest version. We are currently using R12 version.
October 19, 2023 at 2:44 pmJim DayAnsys EmployeeI'm unable to say with any certainty. To best answer that question, download version R14.0.0 and try it.
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