Experimental Studies of an Asymmetric Multi-Bolted Connection under Monotonic Loads

Grzejda, Rafał; Parus, Arkadiusz; Kwiatkowski, Konrad

doi:10.3390/ma14092353

Cited by 26 publications

(16 citation statements)

References 40 publications

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“…4. It is possible to carry out experimental tests verifying the presented bolted connection model using the stand described in [29][30]. 5.…”

Section: Path Typementioning

confidence: 99%

“…The established numerical finite element model of the selected bolted connection made it possible to provide some assessments about the drop of the bearing capacity of the damaged connection system owing to the loss of one or two of fasteners. The paper is concerned with the bolted connection of plates with a ground contact surface, the experimental studies of which have been described in [29][30]. The scope of the paper covers two connection stages: preload and operation.…”

Section: Introductionmentioning

confidence: 99%

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Compressive Strength Analysis of a Steel Bolted Connection under Bolt Loss Conditions

Grzejda¹,

Perz²

2022

Komunikácie

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The aim of the study is the numerical analysis of a bolted connection under the conditions of loss of bearing capacity of some fasteners in this connection. The joined plates in the connection were made of the 3D finite elements, while the fasteners were treated as hybrid models consisting of rigid heads and nuts and flexible beams between them. A model of unilateral contact with friction was used between the joined plates. The bolted connection was first preloaded according to three different tensioning sequences and with a normalised force. After all the bolts were tensioned, the selected bolts were removed, simulating bolt damage under connection loading conditions. The connection was tested for external compressive loads up to 210 kN. The effect of the loosening of the connection on the load in the remaining bolts at the stage of the connection operation was investigated.

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“…4. It is possible to carry out experimental tests verifying the presented bolted connection model using the stand described in [29][30]. 5.…”

Section: Path Typementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Compressive Strength Analysis of a Steel Bolted Connection under Bolt Loss Conditions

Grzejda¹,

Perz²

2022

Komunikácie

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“…The technological heredity phenomenon analysis allows us to increase the technological process reliability. This is especially important in the case of complex mechanisms with multi-bolted connection [ 11 ]. Thanks to such analysis, it is possible to understand how individual stages of the production process affect the condition of the examined object resulting from, e.g., machining operations.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Technological Heredity in the Production of Rolling Bearing Rings Made of AISI 52100 Steel Based on Waviness Measurements

Zmarzły

2022

Materials

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The production of rolling bearings is a complicated process that requires the use of many operations. The manufactured elements of rolling bearings should be of high quality while minimizing production costs. Despite many research studies related to the analysis of technological processes, there is still a lack of research and tools allowing us to satisfactorily assess the relationships between individual operations of the rolling bearing ring process of production and the quality. To perform such an assessment, one can use the concept of technological heredity phenomenon analysis. As the surface waviness of the bearing race is of key importance, the present paper aims at evaluating how the individual technological operations of the rolling bearing ring production process affect the formation of their surface waviness. The surface waviness of the bearing race was measured in both directions (two sections), i.e., along the circumference using the Talyrond 365 measurement system and across the circumference of the race using Talysurf PGI. The production of 6308-2z rolling bearings made of AISI (American Iron and Steel Institute) 52100 bearing steel was analyzed. The occurrence of the phenomenon of technological heredity in the production of rolling bearings was observed. The research results indicate that the turning operation reduces the surface waviness of the bearing rings obtained after forging, while the heat treatment causes a slight increase in surface waviness. On the other hand, grinding operation significantly reduces the waviness, with this reduction being greater for the outer ring. Furthermore, the research has shown that the waviness of the surface is an inheritance factor caused by individual operations of the rolling bearing rings manufacturing process.

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“…An important feature is that some composite materials are more resistant to fatigue loads during take-off or landing, which results in fewer checks during the operation of the aircraft (Barcikowski et al, 2021). The same expectation applies to all connections: steel and composite (Grzejda et al, 2021). In the aviation industry, the most popular are fibre composites reinforced with glass, carbon or aramid fibres in an epoxy resin matrix.…”

Section: Introductionmentioning

confidence: 99%

Wear Resistance of Selected Anti-Wear Coatings Used in Multi-Material Composite Hydraulic Cylinders

et al. 2022

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The paper presents tribological tests of selected materials used as liners in a composite hydraulic cylinder. Three coating materials were used for the analysis: Sika F180 polyurethane, Huntsman Araldite LY1564 with Aradur 3487 amine hardener and Bezlona 1111 Super Metal. In addition, uncoated carbon epoxy laminate (CFRP) samples were used as reference material. The instantaneous course of the friction force, its maximum and average value, were the analysed parameters. Ball-on-disk tests were performed on a specialised tester that allows, among other things, to control the operating conditions (clamping force, operating temperature, speed, friction path) and measurement of the instantaneous value of the friction force. After these tests, the friction paths were observed using a Leica DCM8 contactless profilometer with an EPI 20x lens. The amount of energy dissipated due to friction was also determined. The conducted tests and comparative analyses allowed to conclude that the F180 material is the most desirable in terms of tribological properties.

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Experimental Studies of an Asymmetric Multi-Bolted Connection under Monotonic Loads

Cited by 26 publications

References 40 publications

Compressive Strength Analysis of a Steel Bolted Connection under Bolt Loss Conditions

Compressive Strength Analysis of a Steel Bolted Connection under Bolt Loss Conditions

Analysis of Technological Heredity in the Production of Rolling Bearing Rings Made of AISI 52100 Steel Based on Waviness Measurements

Wear Resistance of Selected Anti-Wear Coatings Used in Multi-Material Composite Hydraulic Cylinders

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