Topology optimization and additive manufacturing in producing lightweight and low vibration gear body

Ramadani, Riad; Pal, Snehashis; Kegl, Marko; Predan, Jožef; Drstvenšek, Igor; Pehan, Stanislav; Belšak, Aleš

doi:10.1007/s00170-021-06841-w

Cited by 38 publications

(18 citation statements)

References 42 publications

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“…These mechanical properties ensure a longer service life for these products [3]. Since the Selective Laser Melting (SLM) process offers high flexibility in manufacturing considering product design and customized product requirements with short production times, it is considered the most suitable manufacturing process [4]. In addition, the SLM process can provide higher mechanical properties compared to conventional manufacturing processes [5].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Best Manufacturing Orientation of Co-Cr-W-Si Dental Prosthetic Elements in the Selective Laser Melting Process

Pal¹,

Gotlih²,

Drstvenšek³

2022

Acta Mechanica Slov.

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It is well known that Selective Laser Melting (SLM) does not provide the same mechanical properties in all directions of the part. This is due to the microstructural grain orientation and pore shape in SLM products. Therefore, depending on the direction of the pressure applied to the SLM product, a different manufacturing orientation is required to achieve the best mechanical properties. Changing the microstructural grain orientation is difficult through SLM, but a process to reduce the size and number of the pores can be discovered through different combinations of manufacturing parameters. In prosthodontics, pressure is usually applied in the vertical direction, which leads to compression and bending of crowns with bridges. The compressive load can be easily absorbed in the crowns, but the bending force has a significant effect here. Therefore, a product with high tensile strength and high ductility is needed to survive longer. Considering these requirements, this study determined the best parameters for laser processing by SLM method to reduce porosity and improve mechanical strength and ductility of Co-Cr-W-Si alloy products. The result is a relative product density of 100% for cubic specimens and a yield strength, ultimate tensile strength, and elongation at break of the tensile specimens of 900 MPa, 1200 MPa, and 15%, respectively, obtained in specimen build-up in the Z direction with a laser power of 60 W and a scanning speed of 450 mm/s. Eventually, the best orientation for the production of dental prosthetic elements using the SLM process was determined.

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Section: Introductionmentioning

confidence: 99%

Investigation of the Best Manufacturing Orientation of Co-Cr-W-Si Dental Prosthetic Elements in the Selective Laser Melting Process

Pal¹,

Gotlih²,

Drstvenšek³

2022

Acta Mechanica Slov.

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“…Due to the environmental characteristics of narrow roadway in coal mine, the drilling rig must be convenient for installation and disassembly. erefore, under the condition of meeting the requirements of working conditions, it is very important to optimize the design of reducer [9]. e object of this paper is the reducer of the rotary part of ZYL-15000D horizontal directional drill.…”

Section: Introductionmentioning

confidence: 99%

Lightweight Design and Dynamics Analysis of ZYL‐15000D Directional Drill Reducer

Xiao-hong

Yan

Chen

et al. 2021

Advances in Materials Science and Engineering

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Since the output torque of the rotary reducer of the ZYL-15000D-kilometer directional drill is proportional to the gear train transmission ratio, the output torque is large enough when the input speed and output speed meet the design goal. This paper selects the method of reducing the transmission ratio to optimize the size parameters of the reducer. MATLAB genetic algorithm is used in the optimization design, and the minimum volume of the rotary part reducer is taken as the objective of optimization design, while the design variables and constraints are determined. The optimal value of design variables was obtained through optimization, and the parameter values of each gear were determined accordingly. Through analysis, the total volume of the optimized gear reducer was reduced by 49.6%. Then, the 3D model of the optimized gear was created, and the analysis of the transient dynamics of the optimized gear was carried out with ANSYS Workbench software. According to the analysis results, the optimized gear met the strength requirements and provided a reference for the subsequent optimization design of other types of gear reducers.

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“…The use of simulation tools for finite element analysis has played a crucial role in the development of lightweight cellular structures [14][15][16] as well as dental implants [17]. The accuracy and efficiency of the material models used for dental implants depends on the use of finite element method to analyse structures and components.…”

Section: Introductionmentioning

confidence: 99%

Finite Element Analysis of Titanium Foam in Mechanical Response for Dental Application

Pal¹,

Drstvenšek²

2021

AMS

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Metals with certain porosity are a new class of materials with extremely low density and a unique combination of excellent mechanical, thermal, electrical, and biocompatible properties. Absorption of impact and shock energy, dust and fluid filtration, construction materials, and most importantly, biocompatible implants are all potential applications for metallic foams. An orthopaedic implant made of metallic foam can provide an open-cell structure that allows for the ingrowth of new bone tissue and the transport of body fluids. Due to its strong biocompatibility and stable fixation between the implant and human bone, titanium foam has recently received much attention as an implant material. Finite element modelling is a suitable method to obtain an efficiently designed implant. Accurate finite element analyses depend on the precision before implementation as well as the functionality of the material properties employed. Since the mechanical performances of titanium foam and solid titanium are different, a constitutive model for porous metal is required. The model of Deshpande and Fleck in the finite element analysis software ABAQUS is used to describe the compressive and flexural deformation properties of titanium foam with 63.5% porosity. The finite element simulation results were compared with the practical mechanical properties obtained by compression testing of the foam. Finally, the material modelling was used to investigate the stress distributions on the dental implant system.

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Topology optimization and additive manufacturing in producing lightweight and low vibration gear body

Cited by 38 publications

References 42 publications

Investigation of the Best Manufacturing Orientation of Co-Cr-W-Si Dental Prosthetic Elements in the Selective Laser Melting Process

Investigation of the Best Manufacturing Orientation of Co-Cr-W-Si Dental Prosthetic Elements in the Selective Laser Melting Process

Lightweight Design and Dynamics Analysis of ZYL‐15000D Directional Drill Reducer

Finite Element Analysis of Titanium Foam in Mechanical Response for Dental Application

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