2026-10-06T08:26:01Z https://api.figshare.com/v2/oai

oai:figshare.com:article/34071521 2026-10-05T17:27:26Z category_1 category_21 category_272 category_39 category_734 category_106 category_133 portal_5 item_type_3 month_year_10_2026

<p>Materials and dimensions of key components.</p> Jiamin Zhang (673881) Jiahui Zhang (3163929) Ning Lü (5662423) Shuaiqi Chen (12993045) Biophysics Biotechnology Environmental Sciences not elsewhere classified Ecology Biological Sciences not elsewhere classified Science Policy Plant Biology tool analog specimen movable joint locations maximum frequency discrepancies dependent structural dynamics dependent natural characteristics based predictions rather 78 %, respectively slider stiffness parameters workspace calculations predicted reported workspace trends pose modal measurements model checking used axis pose variables xlink "> five -, z -, one reference pose slider joints axis machine reference pose pose data x -, whereas spindle twelve screw six modules regular regions irregular regions held constant gravity rose genetic algorithm equivalent springs computationally inefficient beam center ball screw ansys apdl 5 mm <div><p>Five-axis machine tools exhibit pose-dependent structural dynamics, but repeated full finite element reconstruction across the workspace is computationally inefficient. We developed a parametric finite element workflow in ANSYS APDL for a five-axis machine-tool analog specimen. The structure was divided into six modules; regular regions were sweep-meshed and irregular regions were represented with quadratic SOLID186 elements using nominal element sizes of 20, 10, and 5 mm. Bearing, ball screw-nut, and linear guideway-slider joints were represented by equivalent springs. Twelve screw-nut and guideway-slider stiffness parameters were calibrated with a genetic algorithm against the first six natural frequencies measured at one reference pose. Movable joint locations were updated from the X-, Y-, Z-, A-, and C-axis pose variables while the identified joint stiffness values were held constant. At the reference pose, the mean and maximum frequency discrepancies between the calibrated model and experiment were 3.29% and 8.78%, respectively. Workspace calculations predicted that the first natural frequency decreased as the beam center of gravity rose, whereas spindle-dominated local modes showed similar trends among working planes. Because calibration and model checking used the same reference-pose data and no multi-pose modal measurements were available, the reported workspace trends should be interpreted as model-based predictions rather than independently validated responses.</p></div> 2026-10-05T17:27:05Z Dataset Dataset 10.1371/journal.pone.0359727.t002 https://figshare.com/articles/dataset/_p_Materials_and_dimensions_of_key_components_p_/34071521 CC BY 4.0