Investigation of parts assembly error, taking into account the deviation of the shape of their surfaces

Bolotov, M. A.; Grachev, I. A.; Kudashov, Evgeny

doi:10.1051/matecconf/201822401098

Cited by 5 publications

(2 citation statements)

References 10 publications

(11 reference statements)

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“…Another important issue for brakes is vibrations and their influence on the contact pressure and area, since friction between the elements of brakes depends on these parameters, and, therefore, such effects should be considered during the design process [15,16]. Also, the contact area and, therefore, the tribological properties depend on the initial surface roughness and the accuracy of manufacturing and assembling of brake system elements [17][18][19].…”

Section: Materials For Brakesmentioning

confidence: 99%

Investigation of Dynamic Friction Coefficient in Brake Systems

Kovalenko¹,

Perepelkina²

2019

PES

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In this paper, the research of friction coefficient changes in the tribopairs carbon-fiber-reinforced silicon carbide (C/SiC) -steel 37Cr4 and C/SiC -steel C22 used in cars brake systems was carried out for the selection of suitable materials and conditions of usage that provide a vehicle with high performance and safety of braking. Brakes made of C/SiC are very effective in sport cars, but they are expensive, which makes it impossible to use such materials for design of both pads and discs in the brake systems of trucks and offroad vehicles. The main goal of this work was to choose the most suitable material for manufacturing of brake discs interacting with C/SiC pads in order to decrease the cost of brake systems without decreasing their performance. According to the results of the research, the tribopair C/SiC -steel C22 could be used in heavy loaded trucks and massive off-road vehicles.

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Section: Materials For Brakesmentioning

confidence: 99%

Investigation of Dynamic Friction Coefficient in Brake Systems

Kovalenko¹,

Perepelkina²

2019

PES

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“…Therefore, it is no longer appropriate to use fitting data to analyze assembly errors in the assembly process. Recently, several researchers have measured the form error on assembly parts and included them in the analysis of assembly errors [ 11 , 12 , 13 , 14 ]. Among them, Fang et al [ 11 ] proposed an assembly accuracy prediction method using the actual measured surface.…”

Section: Introductionmentioning

confidence: 99%

Entropy-Based Method to Evaluate Contact-Pressure Distribution for Assembly-Accuracy Stability Prediction

Chen

Jin

Shang

et al. 2019

Entropy

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Assembly accuracy and accuracy stability prediction are significant research directions for improving the reliability and efficiency of precision assembly. In this study, an improved method for assembly accuracy stability prediction, based on the contact-pressure distribution entropy, is presented. By using the contact-pressure distribution as the evaluation parameter instead of the strain-energy distribution, the improved method can not only predict the assembly accuracy of precision assembly more efficiently, but also predict the stability of the assembly accuracy with variations in the ambient temperature. The contact pressure has a clearer mechanical significance than strain energy density in the assembly process, which can be used to distinguish the actual contact area from the contact surface. Hence, the improved method is more efficient and accurate than the original. This study utilizes the same case used in the original method and an additional case from the actual production process to verify the improved method. The correctness and validity of the improved method are proved by these case studies.

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Assignment of dimensional accuracy parameters of parts during assembly of aircraft repair engines

Grachev

Bolotov

Kudashov

et al. 2020

IOP Conf. Ser.: Mater. Sci. Eng.

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The article considers the existing models and methods of analysis and synthesis of geometric tolerances of products with assembly dimensional chains. There proposed a method to define the rational tolerances for the linear dimensions of parts during assembly of aircraft repair engines. The developed methodology is based on the use of computer simulation technology for assembling the assemblies with actual geometry, and a model for calculating the labor input and cost of parts manufacturing based on the assigned tolerances. The main advantages of the technique are considered by the example of assigning rational tolerances to the parts of the repair rotor of a high-pressure compressor, which have the greatest influence on the functional characteristics of the aircraft engine. The results of the relationship between the dimensional accuracy parameters of parts and assembly parameters are presented, and the dependence of the cost of refinement or manufacturing of the part on the assigned tolerance is obtained.

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Investigation of parts assembly error, taking into account the deviation of the shape of their surfaces

Cited by 5 publications

References 10 publications

Investigation of Dynamic Friction Coefficient in Brake Systems

Investigation of Dynamic Friction Coefficient in Brake Systems

Entropy-Based Method to Evaluate Contact-Pressure Distribution for Assembly-Accuracy Stability Prediction

Assignment of dimensional accuracy parameters of parts during assembly of aircraft repair engines

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