Observation of the relation between uniaxial creep and stress relaxation of filled rubber

Oman, Simon; Nagode, Marko

doi:10.1016/j.matdes.2014.04.036

Cited by 35 publications

(14 citation statements)

References 17 publications

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“…The composite material also exhibits lower stress relaxation and creep than pure polyamide P12 additively manufactured through SLS. The elastic moduli E c 0 , E c 1 and E c 2 , and viscosities µ c 1 and µ c 2 for the Kelvin-Voight model, illustrated in Figure 4, were calculated from the experimental data using Equation (21). It is important to note that, in the case of creep, the times τ c 1 and τ c 2 are the retardation times or delays of elasticity of the constituent models.…”

Section: Resultsmentioning

confidence: 99%

“…There are various forms of the Maxwell model: simple and complex, for example, models based on Prony series or ones described by fractional calculus [19]. In the case of creep, curves can be described using different forms of the Kelvin and Kelvin-Voight models (models with two, three or more parameters) [20][21][22].The application of plastics in additive manufacturing, especially Selective Laser Sintering (SLS), goes back to the early 1990s. Since then, this technology has developed and a wide range of materials differing in chemical composition and physical properties has been introduced.…”

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confidence: 99%

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confidence: 99%

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Stress Relaxation and Creep of a Polymer-Aluminum Composite Produced through Selective Laser Sintering

Bochnia

Błasiak

2020

Polymers

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This article discusses the rheological properties (stress relaxation and creep) of polymer-aluminum composite specimens fabricated through the selective laser sintering (SLS) from a commercially available powder called Alumide. The rheological data predicted using the Maxwell–Wiechert and the Kelvin–Voigt models for stress relaxation and creep, respectively, were in agreement with the experimental results. The elastic moduli and dynamic viscosities were determined with high accuracy for both models. The findings of this study can be useful to designers and users of SLS prints made from the material tested.

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Section: Resultsmentioning

confidence: 99%

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Stress Relaxation and Creep of a Polymer-Aluminum Composite Produced through Selective Laser Sintering

Bochnia

Błasiak

2020

Polymers

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“…The 2 terms (creep and stress relaxation) are sometimes used interchangeably, although they are really different. On the basis of the assumption that the stress relaxation can be treated as creep under decreasing stress, it has been proposed that the stress relaxation of a material can be predicted from known creep parameters and vice versa (Oman and Nagode ). Further investigations need to be performed to validate this interesting idea.…”

Section: Rheological Characteristics Of Fruit Materialsmentioning

confidence: 99%

Mechanical Models of Compression and Impact on Fresh Fruits

Miao

Andrews

2017

Comp Rev Food Sci Food Safe

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Well-designed and well-operated postharvest mechanical handling processes are vital if fresh fruits are to enter markets with minimal damage. The susceptibility of fruit to quality loss during handling is largely determined by mechanical contact and damage. This article reviews current understanding concerning the effect of impact and other mechanical contacts on fruits. It also discusses the major mechanical models that represent the interaction between fruits or a fruit and a surface. In total, 25 mechanical models associated with compression and impact behaviors of fresh fruits, mainly characterizing such behavior between 2 deformable spherical bodies and between a deformable spherical body and a rigid plate are reviewed. Finally, possible future research directions are discussed. The main challenge in fruit handling is to recognize and prevent microscopic damage to fruits, especially internal tissue/cell damage and microcracks resulting from multiple/repetitive impacts and compressions.

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“…The stiffness is determined from (1/K) = compliance (dd/dF). In equations (8)- (10), each cable deformation takes a derivative with respect to their tension and the results are substituted into equation (11), respectively…”

Section: Stiffnessmentioning

confidence: 99%

Research of cable deformation effects on synchronous accuracy of serial cable-driven sheaves

Yao

et al. 2017

Advances in Mechanical Engineering

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The serial cable-driven sheaves, wrapped by cables in a single-sided pattern, inevitably produce synchronous error for their cable deformation influences. The synchronous accuracy is a key technology for two spacecraft successful docking, which is mainly dependent on the adjustment of the preload on cable. This research on single-sided cable-driven sheaves is not well enough because of their complicated cable deformation behaviors under the preload. This makes them a low assembly efficiency and poor assembly quality in guaranteeing their synchronous accuracy. Thus, building a more precise model is essential between the preload and cable deformation in the assembly of the cable-driven sheaves. For this, considering both the way of the cable preload applied and their operating conditions, a predicting cable deformation (angle error) model is first proposed based on the stiffness of cable-driven sheaves. Then, some useful results are obtained through the analysis of the angle error influenced by three dominating parameters (wrap angle, preload, and friction coefficient) and of the parameter sensitivities to angle error. Finally, some experiments verified the model. This article provides a favorable attempt for better controlling the cable deformation and lays a foundation for further investigation on the synchronous accuracy and improving assembly efficiency of the serial cable-driven sheaves.

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Observation of the relation between uniaxial creep and stress relaxation of filled rubber

Cited by 35 publications

References 17 publications

Stress Relaxation and Creep of a Polymer-Aluminum Composite Produced through Selective Laser Sintering

Stress Relaxation and Creep of a Polymer-Aluminum Composite Produced through Selective Laser Sintering

Mechanical Models of Compression and Impact on Fresh Fruits

Research of cable deformation effects on synchronous accuracy of serial cable-driven sheaves

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