The material parameters for computational modeling of long-fibre composites with textile

Krmela, Ján; Krmelová, Vladimíra

doi:10.1051/matecconf/201815701011

Cited by 6 publications

(5 citation statements)

References 3 publications

(3 reference statements)

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“…Based on the results of our experiment (Table 6), a regression dependence was constructed to determine the influence of the initial tension of warp threads in protective layers on the beating force magnitude for the multilayer technical fabric MTF-6 (4). Using the data in Table 7 for MTF-2 fabrics and using a known procedure for determining the coefficients in regression equation for the second-order orthogonal plan, regression dependences (5) to (8) were obtained. These dependences determine the joint effect of the size of overstep j Z and the differential tension of shed h on the magnitude of the beating force, on the tension of warp threads in outer protective layers.…”

Section: Discussion Of Results Of the Study On Determining The Ration...mentioning

confidence: 99%

“…The work lacks research into the process of forming multilayer technical fabrics for power clamps, which are used when laying pipes with a factory insulating coating, in particular, determining the influence of tension of warp threads on the magnitude of the beating force. Analogs for designing the structure of multilayer technical fabrics are multilayer fabrics made of polyamide-polyester materials of belt conveyors [4], carrying elements using composites with textile reinforcement with different cord angles and an elastic matrix [5]. The mechanical properties of multilayer technical fabrics depend on the interweaving of the main and weft threads, the number of layers.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…The experimental setup for determining technological efforts in the formation of the multilayer technical fabrics MTF-2 and MTF-6 is described in detail in [2,4,5]. It included an eight-channel amplifier 8АNCh-7M, an oscilloscope N-700, and power supplies for them.…”

Section: Initial Tension Of Warp Threads In Protective Layersmentioning

confidence: 99%

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Determining the rational structure of multilayer technical fabric for woven power clamps

Shcherban,

Melnyk,

Kolysko

et al. 2024

EEJET

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The object of research is multi-layered technical fabrics for woven power clamps. A task to determine the rational structure of a multi-layer technical fabric for power clamps has been solved, which makes it possible to achieve an effect when introduced into production through the minimization of raw material costs and the reduction of energy costs for manufacturing a unit of products. The value of the beating force, the tension of warp threads of the outer protective layers, the force layers, the warp threads for connecting the outer protective layers, and the force layers for two structures of multilayer technical fabric were studied. A comparative analysis of conditions for the formation of two multilayer fabrics from polyamide threads was carried out and a multilayer fabric with the most rational structure was selected, the formation of which would require less technological effort. Experimental studies have made it possible to build regression dependences on determining the influence of the initial tension of warp threads of the outer protective layers on the beating force value. The joint effect of the size of an overstep and the different tension of a shed on the beating force value was established, depending on the structure of a multilayer technical fabric. It is shown that when the tension of warp threads of the outer protective layers increases, the beating force value increases. A value of the tension of warp threads in outer protective layers, force layers, warp threads for connecting the outer protective layers and force layers in the position of an overstep and at the moment of thread beating was determined. Analysis of regression dependences will make it possible to determine the optimal loading parameters of the loom. It has been proven that the beating force value is affected by the structure of a multi-layer technical fabric and the tension of warp threads in outer protective layers. The improved multi-layer technical fabric is used for laying pipes with an external factory-made polyethylene coating

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Section: Discussion Of Results Of the Study On Determining The Ration...mentioning

confidence: 99%

Section: Literature Review and Problem Statementmentioning

confidence: 99%

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Determining the rational structure of multilayer technical fabric for woven power clamps

Shcherban,

Melnyk,

Kolysko

et al. 2024

EEJET

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“…The design and strength control of individual parts was implemented in the SolidWorks SW. For the non-linear analyses performed for the components [11], I chose the strategy of controlling the calculation using the arc length increment of the loading (equilibrium) curve. The load is proportionally increased so that balance is achieved at each step [8,10].…”

Section: Design and Strength Check Of Key Head Tilt Componentsmentioning

confidence: 99%

Vehicle wheel positioning innovation on a machine for measuring the contact parameters between a tyre and the road

Jilek

2023

The Archives of Automotive Engineering – Archiwum Motoryzacji

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This article deals with the development and proposal to increase the application of equipment for measuring the adhesion force between the road and the road vehicle. The device enabling the adhesion force measurement of a rotating vehicle wheel is called a dynamic adhesor. The actual position of the vehicle wheel relative to the road-simulating cylinder is, in the present embodiment of the dynamic adhesor, by means of a bolted clamping joint and stops. This embodiment has limiting applications. the test must be aborted, if the position of the vehicle wheel relative to the rotating cylinder changes. Therefore, the adhesor has been upgraded. The upgrade consists of adding a hydraulic control to allow repositioning of the vehicle wheel online without interrupting the experiment, from a workstation outside the rotating parts area. Input load values were determined from the adherent desired operating parameters and from the load simulation in the MSC Adams software. Hydraulic cylinders were designed in accordance with the results of the maximum operating loads and installation space. The current construction was adapted and supplemented with new parts for the use of these hydraulic cylinders. The article only deals with the area of new key elements. The equipment's use has been expanded by improving the dynamic adhesor, for example, with the possibility of simulating the vehicle wheel's driving behaviour when the vehicle is propped up, and in this way, the equipment can also be used for any required research in regard to noise emitted from the tyre's road contact. As a result of innovation, the use of the unique tyre-testing equipment has been expanded, increasing the safety and environmental friendliness of road vehicles.

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“…Another component of no less importance, textile cords are exploited in the manufacturing process of tires for their elasticity, durability, and tenacity (Krmela and Krmelová, 2018). Textile cords deployed in tires structure to resist against compression/ tension in operation are of many types, some of them have a high elasticity modulus (preferred in tires' construction however tend to be bad when it comes to withstanding fatigue (Tian et al, 2019)) whereas others rather point to a low elasticity modulus.…”

Section: Tire Compound Requirementsmentioning

confidence: 99%

Literature Review on Tire Component Requirements

Tchuigwa¹,

Krmela²,

Pokorny³

2021

Self Cite

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This paper is a literature review about tire component requirements for innovation in tire construction. Herein are pointed out essential aspects expected in Tires’ structures from the mechanical point of view for future development of a realistic model for advanced simulation of tires (in miscellaneous operating conditions) and innovation in tire mechanics. Being composite structures, tires are made of many elements chosen with delicacy due to their intrinsic physical properties in regards to load effects. Since tires' mechanical behavior is directly linked to the parameters of its constituents (carcass, steel cord belt, and textile cord belt, namely), it is thereof imperative to grasp some solid pieces of knowledge about. Wherefore, the current contribution explored the mechanical requirements to be taken into account in the matrix (rubber) and reinforcements (steel cords and textile cords) for determining the inputs enabling to build up an accurate and simple computer model for improving tires simulation.

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The material parameters for computational modeling of long-fibre composites with textile

Cited by 6 publications

References 3 publications

Determining the rational structure of multilayer technical fabric for woven power clamps

Determining the rational structure of multilayer technical fabric for woven power clamps

Vehicle wheel positioning innovation on a machine for measuring the contact parameters between a tyre and the road

Literature Review on Tire Component Requirements

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