4.2 Young's modulus of steel

Spittel, M.; Spittel, T.

doi:10.1007/978-3-540-44760-3_6

Cited by 4 publications

(6 citation statements)

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“…Actuators 2019, 8, 18 3 of 17 synchronous motors (PMSM). In addition, the exact data points and the designs will be made available via a link or in the addendum.…”

Section: Methodsmentioning

confidence: 99%

“…Secondly, a fixed form factor of the rotor, following the 1st assumption and optimal rotor diameter achieved from FE simulation. It is important to note that variation of a permanent magnetic energy density of 30.79% for a 100 • C difference can result in a significant stiffness variation with temperature, while mechanical springs will normally have less than 5% [18] for the same region. Keep in mind that the magnetic springs are not expected to generate significant heat, yet, for an expected environmental variation of ±20 • C, the magnetic spring will have a variation of ±5%.…”

Section: Methodsmentioning

confidence: 99%

“…Actuators 2019, 8, 18 7 of 17 sintered magnet geometries use the same manufacturing technology, especially with respect to magnetization i.e., only straight or diametrical magnetizations are considered. For a thorough design optimization, the MagOpt package [19] was used together with an opensource 2D FE solver for magnetostatic problems [21].…”

Section: Methodsmentioning

confidence: 99%

“…Actuators 2019, 8, 18 10 of 17 encoders) at the motor output shaft and the ohmic losses calculated from the torque reference and motor datasheet parameters (phase resistance and torque constant). It is visible that initially, during the start-up, the energy required to initialize the spring assisted setup is higher.…”

Section: Component Design Experimental Validationmentioning

confidence: 99%

“…Actuators 2019, 8, 18 11 of 17 achieved for each topology, irrelevant of the magnet geometry. However, the amount of material required to do so results in the lowest cost design with surface mounted arc magnets.…”

Section: Model Based-optimal Component Designmentioning

confidence: 99%

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Optimal Magnetic Spring for Compliant Actuation—Validated Torque Density Benchmark

et al. 2019

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Magnetic springs are a fatigue-free alternative to mechanical springs that could enablecompliant actuation concepts in highly dynamic industrial applications. The goals of this article are:(1) to develop and validate a methodology for the optimal design of a magnetic spring and (2) tobenchmark the magnetic springs at the component level against conventional solutions, namely,mechanical springs and highly dynamic servo motors. We present an extensive exploration of themagnetic spring design space both with respect to topology and geometry sizing, using a 2D finiteelement magnetostatics software combined with a multi-objective genetic algorithm, as a part of aMagOpt design environment. The resulting Pareto-optima are used for benchmarking rotationalmagnetic springs back-to-back with classical industrial solutions. The design methodology has beenextensively validated using a combination of one physical prototype and multiple virtual designs.The findings show that magnetic springs possess an energy density 50% higher than that of stateof-the-art reported mechanical springs for the gigacycle regime and accordingly a torque densitysignificantly higher than that of state-of-the-practice permanently magnetic synchronous motors.

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“…Actuators 2019, 8, 18 3 of 17 synchronous motors (PMSM). In addition, the exact data points and the designs will be made available via a link or in the addendum.…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Component Design Experimental Validationmentioning

confidence: 99%

Section: Model Based-optimal Component Designmentioning

confidence: 99%

See 3 more Smart Citations

Optimal Magnetic Spring for Compliant Actuation—Validated Torque Density Benchmark

et al. 2019

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Design and Durability of Roller Assemblies in Sintering Machines

Анищенко

Kukhar

Oginskiy

2022

Lecture Notes in Mechanical Engineering

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A thermo-viscoplasticity model for metals over wide temperature ranges- application to case hardening steel

2021

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In this contribution, a model for the thermomechanically coupled behaviour of case hardening steel is introduced with application to 16MnCr5 (1.7131). The model is based on a decomposition of the free energy into a thermo-elastic and a plastic part. Associated viscoplasticity, in terms of a temperature-depenent Perzyna-type power law, in combination with an isotropic von Mises yield function takes respect for strain-rate dependency of the yield stress. The model covers additional temperature-related effects, like temperature-dependent elastic moduli, coefficient of thermal expansion, heat capacity, heat conductivity, yield stress and cold work hardening. The formulation fulfils the second law of thermodynamics in the form of the Clausius–Duhem inequality by exploiting the Coleman–Noll procedure. The introduced model parameters are fitted against experimental data. An implementation into a fully coupled finite element model is provided and representative numerical examples are presented showing aspects of the localisation and regularisation behaviour of the proposed model.

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4.2 Young's modulus of steel

Cited by 4 publications

References 0 publications

Optimal Magnetic Spring for Compliant Actuation—Validated Torque Density Benchmark

Optimal Magnetic Spring for Compliant Actuation—Validated Torque Density Benchmark

Design and Durability of Roller Assemblies in Sintering Machines

A thermo-viscoplasticity model for metals over wide temperature ranges- application to case hardening steel

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