Hello,
I am working with a surface geometry that has significant curvature. Initially, I used SHELL281 elements to model it with a thickness of 5 mm and applied transversely isotropic properties in ANSYS Composite PrepPost (ACP) to account for varying fiber directions within the geometry. However, I encountered an error related to the radius of curvature to thickness ratio. Specifically, the error states: "Element 895 has a radius/thickness ratio of 0.09136 (minimum radius of curvature of 0.4568 and a maximum thickness of 5)."
I have tried smoothing the shape and adjusting the element size, but neither approach resolved the issue. I considered switching to SOLSH190 elements instead of SHELL281, but I understand that SOLSH190 works only for solid geometries. I also attempted to convert the surface to a solid in ACP Pre, but due to the irregular shape, the conversion resulted in significant element loss.
If I were to use submodeling, I would need to transition from a full model with 5 mm thickness to a submodel with 0.1 mm thickness. However, I am aware that material properties cannot be changed between the global model and the submodel in this context.
Do you have any suggestions on how to fix this problem? Any guidance or alternative approaches would be greatly appreciated.
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