Shape optimization of tooth profile of a flexspline for a harmonic drive by finite element modelling

Kayabaşı, Oğuz; Erzincanlı, Fehmi

doi:10.1016/j.matdes.2005.09.009

Cited by 103 publications

(56 citation statements)

References 3 publications

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“…Currently proposed NASA missions to so-called “icy bodies,” consisting of moons such as Europa and Titan as well as comets and asteroids, will require advanced gear systems that can operate at extremely low temperatures. SWGs offer significant advantages over conventional gear systems, including high positioning accuracy with zero backlash, reduced size, reduced weight and increased reduction ratios3. These properties make them an attractive gear choice for high-performance applications, such as space and defense, but high cost due to ultra-precise manufacturing limits widespread use in lower cost, consumer-grade robotics.…”

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confidence: 99%

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Castable Bulk Metallic Glass Strain Wave Gears: Towards Decreasing the Cost of High-Performance Robotics

Hofmann

Pólit-Casillas

Roberts

et al. 2016

Sci Rep

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The use of bulk metallic glasses (BMGs) as the flexspline in strain wave gears (SWGs), also known as harmonic drives, is presented. SWGs are unique, ultra-precision gearboxes that function through the elastic flexing of a thin-walled cup, called a flexspline. The current research demonstrates that BMGs can be cast at extremely low cost relative to machining and can be implemented into SWGs as an alternative to steel. This approach may significantly reduce the cost of SWGs, enabling lower-cost robotics. The attractive properties of BMGs, such as hardness, elastic limit and yield strength, may also be suitable for extreme environment applications in spacecraft.

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confidence: 99%

“…Due to the design of the teeth, the contact is almost purely radial, preventing much of the frictional wear that occurs in other gear systems, even though significant wear is often seen in failed SWGs6. As such, much effort has been spent designing the tooth profile for SWGs, which has been optimized into an S-shaped profile3.…”

mentioning

confidence: 99%

Castable Bulk Metallic Glass Strain Wave Gears: Towards Decreasing the Cost of High-Performance Robotics

Hofmann

Pólit-Casillas

Roberts

et al. 2016

Sci Rep

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“…A shape or material design optimization problem can generally be formulated as a constrained minimization problem as following [7]: minimize : within the design space :…”

Section: Optimization Methodsmentioning

confidence: 99%

Probabilistic design of sheet-metal die by finite element method

2008

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“…11 The first step with finite element method in numerical solution is to build a finite element model equivalent to the geometric model. 12 Finite element modelling is used to validate each step of the methodology and is presented in this article. 13 The finite element model of car frame system has been dismantled as independent simple beams.…”

Section: Fea and Analytical Calculations Of Car Framementioning

confidence: 99%

Reliability analysis of elevator car frame using analytical and finite element methods

Onur

İmrak

2011

Building Services Engineering Research and Technology

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The aim of this study is to determine the values of stress and deformation occurring on elevator car frame components with finite element and analytical methods. Two analytical approaches have been used to obtain the mechanical behaviours of elevator car frame components. Different design parameters have been used to show fluctuation of safety factors, stress and deformation values occurring on elevator car frame components. Optimisations of vertical and crosshead beams have been performed by the finite element method in order to attain optimum weight and stress reduction. It is found that the most critical component of elevator car frame is the crosshead beam when elevator is overloaded. Practical applications: This article presents the stress and deformation values on car frame components depending on the number of passengers for elevator designed for five passengers. Safety factors have been presented for car frame components separately when the elevator is overloaded. The allowable maximum load capacities of car frame components designed for five passengers have been presented.

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Shape optimization of tooth profile of a flexspline for a harmonic drive by finite element modelling

Cited by 103 publications

References 3 publications

Castable Bulk Metallic Glass Strain Wave Gears: Towards Decreasing the Cost of High-Performance Robotics

Castable Bulk Metallic Glass Strain Wave Gears: Towards Decreasing the Cost of High-Performance Robotics

Probabilistic design of sheet-metal die by finite element method

Reliability analysis of elevator car frame using analytical and finite element methods

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