Development of the composite flexspline for a cycloid-type harmonic drive using net shape manufacturing method

Jeong, Kwang Seop; Lee, Dai Gil; Oh, Se Hoon

doi:10.1016/0263-8223(95)80024-7

Cited by 20 publications

(16 citation statements)

References 3 publications

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“…The heat treatment method to be applied to a spline must be determined entailing the criterion of ensuring its elastic properties as well as the service life assumed. Within the recent years, various attempts have been undertaken to use different structural materials for flexsplines, other than those commonly applied in quenching and tempering [26][27][28]. An example of such an approach may be a flexspline made of composite materials based on an epoxy resin matrix reinforced with carbon fibres [26].…”

Section: New Materials In Harmonic Drivementioning

confidence: 99%

“…Within the recent years, various attempts have been undertaken to use different structural materials for flexsplines, other than those commonly applied in quenching and tempering [26][27][28]. An example of such an approach may be a flexspline made of composite materials based on an epoxy resin matrix reinforced with carbon fibres [26]. A flexspline should ensure the capacity for vibration damping, high radial flexibility and torsional rigidity.…”

Section: New Materials In Harmonic Drivementioning

confidence: 99%

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Analysis of New Materials in Automotive Construction in Term of the Vibration Properties

Burdzik

Folęga²,

Konieczny³

et al. 2014

Acta Metall. Slovaca Conf.

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The paper presented discussion on new materials in automotive construction in term of the vibration properties. Some application of simulation and numerical methods for analysis of new material properties in dynamic research of vehicle systems has been presented. The main object of the research was the analysis of influence of new materials used for automotive production on vibration generation, propagation and isolation. In the presented study, as the structural material for toothed flexsplines of harmonic drivers, a composite material based on an epoxy resin matrix reinforced with glass or carbon fibres was used. A preliminary numerical analysis of the material and structural solutions for the harmonic driver flexsplines assumed to be applied was conducted. It was presented possibilities of simulation research for purpose of comparison of different materials for chosen systems of vehicle.

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Section: New Materials In Harmonic Drivementioning

confidence: 99%

Section: New Materials In Harmonic Drivementioning

confidence: 99%

Analysis of New Materials in Automotive Construction in Term of the Vibration Properties

Burdzik

Folęga²,

Konieczny³

et al. 2014

Acta Metall. Slovaca Conf.

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“…The flexspline it is the main component of a harmonic drive, which can generate a repeated vibration by the wave generator. With this a reason, the flexspline should have flexibility and good vibration characteristics [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

“…Therefore significant enhancement of the harmonic drive is possible through a rational selection of geometrical parameters of the flexspline, but also through applying suitable materials or technological treatments. Using composites on the flexspline enables weight reduction of the flexspline and increases significantly its radial susceptibility and damping of vibration [2,[5][6]. The production of flexsplines made entirely from composites is, however, constrained by technological difficulties connected with creating their toothed ring gear.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Analysis of Selected Materials for Flexsplines

Folęga¹,

Siwiec²

2012

Archives of Metallurgy and Materials

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The computer analysis of the influence of flexspline materials at the strength of the flexspline was performed for two and three dimensional models using the finite element method and MSC Patran/Nastran software. Calculations were conducted in two steps. The first one concerns two dimensional models on the contact between the flexspline and the wave generator. The second concerns three dimensional models of flexspline. The application of steel and steel-composite materials as material of the flexspline in harmonic drive was analysed. In calculations were used two types of composites with an epoxy resin, reinforced by the carbon-fiber or the glass-fiber. The preliminary study of stresses for the developed models was made. The steel-composite hybrid flexspline as compared to conventional steel flexspline showed a decrease of maximum stress in the analyzed dangerous cross-sections. Shapes and the frequency of vibration of the flexsplines were also calculated. The impact of stacking fiber angle on the frequency of vibration in the tested flexsplines is negligible.Keywords: materials, flexspline, harmonic drive, finite element method Przeprowadzono analizę komputerową wpływu materiałów kół podatnych na ich wytrzymałość przy pomocy dwu i trój-wymiarowych modeli wykorzystując metodę elementów skończonych oraz oprogramowanie MSC Patran/Nastran. Obliczenia przeprowadzono w dwóch etapach. Pierwszy z nich dotyczył dwuwymiarowych modeli kontaktu koła podatnego i generatora fali. Drugi dotyczył trójwymiarowych modeli kół podatnych. Przeprowadzono analizę zastosowania stalowych oraz stalowo-kompozytowych materiałów na koła podatne przekładni falowej. W obliczeniach wykorzystano dwa rodzaje kompozytów z osnową z żywicy epoksydowej, zbrojonej włóknem węglowym lub włóknem szklanym. Dla opracowanych modeli została wykonana wstępna analiza stanu naprężenia. Analizując otrzymane wyniki obliczeń symulacyjnych przyjętych rozwiązań konstrukcyjnych kół podatnych stwierdzono zmniejszenie wartości naprężeń w rozpatrywanych przekrojach stalowo-kompozytowych kół podatnych w porównaniu z tradycyjnymi kołami stalowymi. Wyznaczono ponadto postacie i częstotliwości drgań badanych kół podatnych. Stwierdzono że, wpływ kąta ułożenia włókien na częstotliwości drgań badanych kół podatnych jest nieznaczny.

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Experimental and numerical studies on compaction of carbon fiber composite joint with variable cross‐section using thermal expansion process

Zhang

Liang²,

et al. 2018

Polymer Composites

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For hollow composite with complex shape, thermal expansion process is usually used to ensure uniform compaction pressure and excellent processing quality. This study focused on compaction of carbon fiber/epoxy matrix composite joint with variable cross‐section using thermal expansion process. Three kinds of silicone rubber core molds were adopted and experiments were performed to study the effect of elastomer core mold on resin pressure distribution inside prepreg stack during process and processing quality of composite joint. Moreover, based on numerical analysis, thermal expansion behaviors of different core molds and compaction pressure on prepreg stack were studied. The results indicate that material properties and geometric structure of core mold significantly influence thermal expansion behavior of core mold and compaction pressure distribution on prepreg stack. Due to irregular shape of core mold, thermal expansion of core mold at the regions with different cross‐sections is obviously uneven. And core mold with large coefficient of thermal expansion and small compressive modulus is more likely to fill process gap and achieve uniform compaction pressure distribution on prepreg stack. Therefore, controlling thermal expansion behavior of core mold to improve processing quality of composite involves reasonable material properties of core mold and adjusting process gap at different cross‐sections of composite. POLYM. COMPOS., 40:E1057–E1074, 2019. © 2018 Society of Plastics Engineers

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Development of the composite flexspline for a cycloid-type harmonic drive using net shape manufacturing method

Cited by 20 publications

References 3 publications

Analysis of New Materials in Automotive Construction in Term of the Vibration Properties

Analysis of New Materials in Automotive Construction in Term of the Vibration Properties

Numerical Analysis of Selected Materials for Flexsplines

Experimental and numerical studies on compaction of carbon fiber composite joint with variable cross‐section using thermal expansion process

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