https://eng-tools.dev/series-a/ Recent content in Series A — Papers → Tools on Engineering Tools Hugo en Thu, 02 Apr 2026 00:00:00 +0000 https://eng-tools.dev/series-a/a2-hertz-contact/ Wed, 19 Mar 2025 00:00:00 +0000 https://eng-tools.dev/series-a/a2-hertz-contact/ 5-node closed-form pipeline for maximum contact pressure and subsurface shear stress in deep groove ball bearings. Hamrock-Brewe approximation, Python notebook, verified on bearing 6206. https://eng-tools.dev/series-a/a4-penetration-depth/ Thu, 02 Apr 2026 00:00:00 +0000 https://eng-tools.dev/series-a/a4-penetration-depth/ Closed-form model for rigid projectile penetration into semi-infinite concrete targets, based on Li & Chen (2003). Cavity expansion theory, 7-node pipeline, Python notebook verified against Forrestal et al. (1994) test data. https://eng-tools.dev/series-a/a1-fatigue-notched-plate/ Thu, 19 Mar 2026 00:00:00 +0000 https://eng-tools.dev/series-a/a1-fatigue-notched-plate/ 10-node closed-form pipeline for fatigue life prediction in plates with semicircular notches, based on Hazizi et al. (2023). Includes Kt correction, mean stress, and Python notebook with FEM verification via PrePoMax. https://eng-tools.dev/series-a/a3-thick-walled-cylinder/ Thu, 19 Mar 2026 00:00:00 +0000 https://eng-tools.dev/series-a/a3-thick-walled-cylinder/ Closed-form Lamé equations for radial and hoop stress in thick-walled cylinders under internal pressure, based on Croccolo & Vincenzi (2009). Python notebook with interference fit verification case.