Topology optimized, Lattice-structured, and Topology optimized-lattice (Hybrid-structured) gears were designed to investigate the influence of web geometric structure on the gear service performance, such as contact stress, bending stress and transmission error. The gear stress distributions and transmission errors were simulated using finite element analysis (FEA). The gear samples were manufactured through the additive manufacturing (AM) equipment. An AHP-based normalized scoring system was proposed to quantitatively evaluate the influence of web structure on gear service performance, with due consideration given to weight reduction. Additionally, the stress responses of Hybrid-structured gears under varying topological array architectures were analyzed by altering the number of topological arrays. Results indicate that the hybrid-structured gear achieves an optimal balance in service performance. Compared to normal gears, the Hybrid-structured gear achieved a 7.6% weight reduction while increasing transmission error by only 4.5%, and the tooth contact stress remains relatively constant.
CoscoFAdduciRMuzziL, et al. Multiobjective design optimization of lightweight gears. Machines2022; 10: 779.
2.
XuGDaiNTianS. Principal stress lines-based design method of lightweight and low vibration amplitude gear web. Math Biosci Eng2021; 18: 7060–7075.
3.
DörterlerMŞahinİGökçeH. A grey wolf optimizer approach for optimal weight design problem of the spur gear. Eng Optim2019; 51: 1013–1027.
4.
SunZTangJChenS, et al. Mesh stiffness and dynamic response analysis of modified gear system with thin web and weight reduction holes. J Sound Vib2023; 546: 117437.
5.
YangJZhangYLiR, et al. Characterization of damping in 3D metal printed gear body using parameter optimization. J Vib Control2024; 30: 3220–3232.
6.
ConcliF. Tooth root bending strength of gears: dimensional effect for small gears having a module below 5 mm. Appl Sci2021; 11: 2416.
7.
JoshiSKulkarniRJoshiA, et al. Design of helical gear with carbon reinforced EN36 steel for two stage constant mesh gearbox weight reduction. Mater Today Proc2021; 46: 626–633.
8.
XuGDaiN. Michell truss design for lightweight gear bodies. Math Biosci Eng2021; 18: 1653–1669.
9.
KishoreSNReddyAVVRaoLB. Design and optimization of spur gears in a single stage reduction gear box. Mater Today Proc2022; 60: 2010–2017.
10.
BrummerMRaddatzKJSchmittMM, et al. Static load-carrying behavior and material properties of additively manufactured gears (PBF-LB/M, 16MnCr5). Rapid Prototyp J2023; 29: 117–130.
11.
WinklerKJSchmittMTobieT, et al. Characterization and influences of the load carrying capacity of lightweight hub designs of 3D-printed gears (16MnCr5, PBF-LB/M-process). Proc Munich Symp Lightweight Des2023; 160–174.
12.
TezelTTopalESKovanV. Failure analysis of 3D-printed steel gears. Eng Fail Anal2020; 110: 104411.
13.
BasakAKGhassebJPramanikA. Performance of gears manufactured through additive manufacturing. Metals2025; 15: 63.
14.
TunaliogluMSAgcaBV. Wear and service life of 3-D printed polymeric gears. Polymers2022; 14: 2064.
15.
ŠuljićITvrdićVPerkušićM, et al. Experimental analysis on hybrid polymer gears produced with fused deposition modeling method: thermal behavior and wear. Appl Sci2024; 14: 11509.
16.
LinCFanYZhangZ, et al. Additive manufacturing with secondary processing of curve-face gears. Int J Adv Manuf Technol2016; 86: 9–20.
17.
KampsTBiedermannMSeidelC, et al. Design approach for additive manufacturing employing constructal theory for point-to-circle flows. Addit Manuf2018; 20: 111–118.
18.
J. Muminovic A, Muminovic A, Mesic E, et al. Spur gear tooth topology optimization: finding optimal shell thickness for spur gear tooth produced using additive manufacturing. TEM J2019; 8: 788–794.
19.
MuraACuràFPasculliL. Optimisation methodology for lightweight gears to be produced by additive manufacturing techniques. Proc Inst Mech Eng C J Mech Eng Sci2018; 232: 3512–3523.
20.
JainMPatilS. Comparative analysis of surface characteristics of nylon-based polymer gears manufactured by different techniques. Mater Today Proc2022; 63: 40–45.
21.
Buj-CorralIZayas-FiguerasEE. Comparative study about dimensional accuracy and form errors of FFF printed spur gears using PLA and nylon. Polym Test2023; 117: 107862.
22.
KulangaraAJRaoCSPSubhash Chandra BoseP. Generation and optimization of lattice structure on a spur gear. Mater Today Proc2018; 5: 5068–5073.
23.
Félix-MartínezCPiedraSPerez-BarreraJ, et al. Lightweighting and performance analysis of a spur gear by implementing cellular structures and additive manufacturing. Int J Adv Manuf Technol2025; 136: 2291–2303.
24.
JosephAMaheshVMaheshV. Effect of loading rates on the in-plane compressive properties of additively manufactured ABS and PLA-based hexagonal honeycomb structures. J Thermoplastic Compos Mater2023; 36: 1113–1134.
25.
Garrido SilvaBAlvesFSardinhaM, et al. Functionally graded cellular cores of sandwich panels fabricated by additive manufacturing. Proc Inst Mech Eng J Mater Appl2022; 236: 1814–1828.
26.
NguyenDSVignatF. A method to generate lattice structure for additive manufacturing. In: Proceedings of the IEEE international conference on industrial engineering and engineering management, 2016, pp. 966–970.
27.
BuldukMEÇalışkanCİCoşkunM, et al. Comparison of the effect of different topological designs and process parameters on mechanical strength in gears. Int J Adv Manuf Technol2022; 119: 6707–6716.
28.
MuminovićAJBrautSBožićŽ, et al. Experimental failure analysis of polylactic acid gears made by additive manufacturing. Procedia Struct Integr2023; 46: 125–130.
29.
MuminovicAJPervanNDelicM, et al. Failure analysis of nylon gears made by additive manufacturing. Eng Fail Anal2022; 137: 106272.
30.
MuminovicAJColicMMesicE, et al. Innovative design of spur gear tooth with infill structure. Bull Pol Acad Sci Sci2020; 68: 477–483.
31.
RamadaniRBelsakAKeglM, et al. Topology optimization-based design of lightweight and low vibration gear bodies. Int J Simul Model2018; 17: 92–104.
32.
RamadaniRKeglMPredanJ, et al. Influence of cellular lattice body structure on gear vibration induced by meshing. Strojniski vestnik–J Mech Eng2018; 64: 611–620.
33.
RamadaniRPalSBelsakA, et al. Selective laser melting of a Ti-6Al-4V lattice-structure gear: design, topology optimization, and experimental validation. Appl Sci2025; 15: 15.
34.
RamadaniRPalSKeglM, et al. Topology optimization and additive manufacturing in producing lightweight and low vibration gear body. Int J Adv Manuf Technol2021; 113: 3389–3399.
