Topology Optimization Based Design of Lightweight and Low Vibration Gear Bodies

Ramadani, Riad; Belšak, Aleš; Kegl, Marko; Predan, Jožef; Pehan, Stanislav

doi:10.2507/ijsimm17(1)419

Cited by 78 publications

(46 citation statements)

References 19 publications

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“…(15), the case wherein the airbag length is determined, the influence of the thickness of the soft body sidewall, and the soft body manipulator width on the mechanical bending of the soft body are essentially similar. When studying the influence of the width using SIMULIA Abaqus [34], the width of the soft manipulator is set to 14 mm, 16 mm, 18 mm, 20 mm, and 22 mm, and Fig. 5 shows the angles of the mechanical arm of different widths.…”

Section: Finite Element Simulation Analysismentioning

confidence: 99%

Design and Performance Analysis of Airbag-Soft-Manipulator According to Characteristic Parameters

Liu

Wang

et al. 2019

SV-JME

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Manipulators are increasingly used in mechanical manufacturing due to the needs of industrial automation. The shortcomings of traditional manipulators, such as those in relation to their flexibility, interactivity, and safety, lead to certain limitations in their application for variable shapes and fragile objects. Given the above shortcomings of traditional manipulators, this research analysed a friction-enhanced multi-airbag soft manipulator and its performance. Analysis results of characteristic parameters show that the structure of the airbag soft manipulator is optimized, and the structural design and manufacture of the soft manipulator are completed. Deformation of the manipulator base material is described by the Neo-Hooke strain energy function, and the strain energy function coefficient is derived by obtaining the characteristic parameters of the material through tensile experiments. Finite element analysis of the manipulator is performed according to the determined strain energy function. The influence of the characteristic parameters on the mechanical bending of the manipulator is studied. Theoretical analysis proves the validity of the finite element analysis. The structural parameters of the manipulator are finally determined according to the simulation analysis results. The control system is designed according to the driving method and working mode of the soft manipulator to perform the soft manipulator grasp experiment. The manipulator can lift a weight of 300 g, thereby indicating that the soft manipulator designed in this paper has a good application effect and prospects.

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Section: Finite Element Simulation Analysismentioning

confidence: 99%

Design and Performance Analysis of Airbag-Soft-Manipulator According to Characteristic Parameters

Liu

Wang

et al. 2019

SV-JME

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“…In our case each iteration required 68 full finite element (FE) analyses. A detailed explanation for cell parameters used to design and optimize the gear body structure can be found in [22].…”

Section: Design and Optimization Of Gear Body Structurementioning

confidence: 99%

Influence of Cellular Lattice Body Structure on Gear Vibration Induced by Meshing

2018

SV-JME

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This paper discusses the influence of a gear body structure on gear vibrations induced by meshing. For this purpose the spur gear body was designed as cellular lattice structure. In order to reduce the stress levels as much as possible and to remove stress concentrations, the lattice structure was optimized by engaging a topology optimizer. The obtained lattice structure was expected to have a positive influence on vibrations reduction due to longer pressure waves travelling paths and several path direction changes. To verify this experimentally, the spur gear was produced from titanium alloy Ti-6Al-4V ELI by using selective laser melting technique. Furthermore, a new precise closed loop test rig was designed and produced to measure experimentally vibrations caused by rotating and lubricated gear pairs. Vibrations input data were obtained by measuring accelerations on the housing of the test rig. The signals were analyzed in frequency and time-frequency domains. Experimental results confirm that the cellular lattice structure of the gear body, especially if the voids are filled with a polymer, has a positive effect on reduction of vibrations induced by meshing of engaged gears.

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“…24,25 It is well known that the lighter and quieter machines are obtained using the topology optimization methods in the automotive industry. 26,27 Also, a housing structure of an axial piston pump was optimized for noise and vibration reduction using the topology design method, consequently, the average sound pressure level was reduced by about 2 dB(A). 28 The objectives of this research are as follows: (1) find the root causes of vibration for a vertical pump, (2) build a finite element model of the vertical pump for the modal analysis, (3) use the topology optimization method to modify the structure of baseplate for the purpose of increasing the stiffness of pump unit and reducing the vibration level, and (4) evaluate the differences of vibration characteristics between original and optimized pumps using the experimental measurements and 1/3 octave-band filter technique.…”

Section: Introductionmentioning

confidence: 99%

Integrated topology optimization for vibration suppression in a vertical pump

Zhang

Ren

et al. 2019

Advances in Mechanical Engineering

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This article presents a new approach aiming to reducing pump vibration by modifying its baseplate structure. The finite element models of the vertical pump were established and validated by the experimental impact test. The natural frequencies of pump were mapped in both experimental and numerical methods. The weak stiffness of the baseplate was identified as the root cause for the pump vibration. A topology optimization was used for enhancing the stiffness of baseplate and controlling its weight. The new baseplate was designed according to the inputs from optimization results and manufactured by the casting method. Both the vibration tests and the numerical simulations were carried out to investigate the vibration behaviors of the optimized pump model. The differences of vibration characteristics between original and optimized pumps were evaluated using 1/3 octave-band filter technique. Results show that the vibration was suppressed, and the resonance at 31.5 Hz was eliminated using the optimized baseplate. In particular, the maximum vibration amplitude of the vertical pump was reduced from 4.05 to 1.75 mm/s at the low flow rate condition. It was experimentally confirmed that the vibration amplitude of the optimized model complies with the requirements of the International Organization for Standardization standard and ensures the pump can operate stable for a long time.

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Topology Optimization Based Design of Lightweight and Low Vibration Gear Bodies

Cited by 78 publications

References 19 publications

Design and Performance Analysis of Airbag-Soft-Manipulator According to Characteristic Parameters

Design and Performance Analysis of Airbag-Soft-Manipulator According to Characteristic Parameters

Influence of Cellular Lattice Body Structure on Gear Vibration Induced by Meshing

Integrated topology optimization for vibration suppression in a vertical pump

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