STRUCTURAL INTEGRITY ASSESSMENT OF A TWO-STAGE DISK WITH PINHOLES UNDER STATIC CONDITIONS
DOI:
https://doi.org/10.62651/Keywords:
Multistage cyclic symmetry;, Harmonic index;, Nodal diameter;, Rotating disk;, Centrifugal loading;, ANSYS Mechanical;, Structural integrity;, Turbomachinery.Abstract
Multistage cyclic symmetry analysis enables efficient simulation of complex rotating structures
composed of multiple cyclically symmetric subsystems with differing sector counts. This study
presents a static structural assessment of a two-stage rotating disk with stress-relief pinholes using
multiharmonic cyclic symmetry analysis in ANSYS Mechanical (Release 2025 R2). The inner
stage consists of 11 sectors, while the outer stage contains 16 sectors. Although subjected to
axisymmetric centrifugal loading at 100 rad/s, interstage coupling generates non-axisymmetric
internal force distributions, requiring inclusion of multiple harmonic indices to ensure displacement
continuity and accurate stress prediction. The results demonstrate that single-harmonic (HI = 0)
analysis leads to interface discontinuities, while multiharmonic enrichment restores compatibility
and produces physically consistent deformation patterns.
Downloads
Published
Issue
Section
License
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
