Quality of the Hydroformed Tubular Parts

Ceclan, Vasile; Bâlc, Nicolae; Grozav, Sorin; Bere, Paul; Borzan, Cristina

doi:10.4028/www.scientific.net/aef.8-9.215

Cited by 13 publications

(10 citation statements)

References 12 publications

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“…When the structures are excited by frequencies that are close or equal to their resonant frequencies, they oscillate in special shapes that are called mode shapes. By understanding the behaviour of the structure in the range of frequencies at which a resonance may occur, the structure can be designed to be stronger and more stable, so it is possible to avoid the destructions caused by unwanted oscillation [6].…”

Section: Modal Analysis Of a Gear Wheelmentioning

confidence: 99%

Effect of the Weight reduction of a Gear Wheel on Modal Characteristics

et al. 2019

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The paper deals with the influence of gear weight reduction on its modal properties. The aim of thepaper is to use the simulation tools to introduce the dependence of natural frequencies on the change in the shape of the gear, which is reflected in the change in weight. At the beginning of the paper, the theory and experimental bases of vibration testing and analysis are introduced to understand the principles of modal parameter specification. Verification of the boundary conditions used in the simulation was performed using the experimental method and it is described in the next part of the article. Tests confirmed the consistency of the values achieved by both approaches. Thus, the same boundary conditions could be used to specify the dependence of natural frequencies on the change in the geometry ofthe gear (which is associated with weight reduction). Numerical analysis was performed by FEM analysisusing PTC Creo software. Experimental modal analysis was performed using a PULSE measurement system.

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Section: Modal Analysis Of a Gear Wheelmentioning

confidence: 99%

Effect of the Weight reduction of a Gear Wheel on Modal Characteristics

et al. 2019

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“…There are a few technological and economic constraints that currently limit the full and efficient recycling of plastic wastes into useful products. it would be great if these products could be reused in the production of consumer goods, by hydroforming or other methods, as other researchers have done [7].…”

Section: Plastics Recyclingmentioning

confidence: 99%

New materials obtained by rubber recycling from industrial waste

et al. 2019

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Solid waste management is one of the major environmental concerns nowadays. The present study covers the use of rubber and recycled plastics as replacement aggregates in concrete. Replacing the sand with plastics or rubber the compressive and tensile strength of the concrete decreases.. It was found that the concrete obtained by replacing a proportion not exceeding 9% of aggregates in the concrete recipe by rubber, can be used as a substitute for normal concrete, for instance in the building industry. The use of these materials in concrete comes from the environmental constraints in the safe disposal of the products. Big attention is being focused on the environment and safeguarding of natural resources and recycling of wastes materials.

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“…Figure 9 shows the tubes made by hydroforming. It is possible to observe the inner and outer surface of the tubes [19][20][21]. Figure 9a shows the difference in roughness caused by the hydroforming process.…”

Section: The Own Achievement Of Hydroformingmentioning

confidence: 99%

Determination of the force required for the hydroforming of al 99,5

Ceclan

Grozav

2018

MATEC Web Conf.

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In this paper the authors present the hydroforming of the tubular parts. It also presents the technology of the tubular parts' hydroforming. In this paper we determine the forces necessary for the hydroforming process. They are also presented the mechanical parameters of the material that are used in the deformation process. Also, the variation in wall thickness of the aluminium specimen is determined before the deformation process

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Quality of the Hydroformed Tubular Parts

Cited by 13 publications

References 12 publications

Effect of the Weight reduction of a Gear Wheel on Modal Characteristics

Effect of the Weight reduction of a Gear Wheel on Modal Characteristics

New materials obtained by rubber recycling from industrial waste

Determination of the force required for the hydroforming of al 99,5

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