Viscoelastic-adhesive contact modeling: Application to the characterization of the viscoelastic behavior of materials

Yu, Hongwen; Li, Zhe; Wang, Q. Jane

doi:10.1016/j.mechmat.2013.01.004

Cited by 28 publications

(14 citation statements)

References 72 publications

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“…Furthermore, for polymers, such as polydimethylsiloxane (PDMS) and polyurethane (PU), the adhesion was strongly related with the detaching velocity 8 . The crack propagation was also introduced into the detaching procedure to calculate the adhesion between viscoelastic solids 9–12 . In addition to the traditional researches on adhesion phenomena and theories 3–6,13,14 , many researchers studied high-performance biomimetic dry and wet adhesive surfaces 15–22 .…”

Section: Introductionmentioning

confidence: 99%

Transient adhesion in a non-fully detached contact

Liu

Zheng

et al. 2018

Sci Rep

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Continuous approaching and detaching displacement usually occurs in an adhesion test. Here, we found a transient adhesion force at the end of a non-fully detached contact. This force occurred when the nominal detaching displacement was less than the traditional quasi-static theory predicted zero force point. The transient adhesion force was ascribed to interfacial adhesion hysteresis, which was caused by the cracking process of the contact and the deformation competition between the sphere and supporting spring. Results indicated that the testing of adhesion can be significantly affected by different combinations of stiffnesses of the contact objects and the supporting spring cantilever. This combination should be carefully designed in an adhesion test. All these results enabled increased understanding of the nature of adhesion and can guide the design of adhesive actuators.

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Section: Introductionmentioning

confidence: 99%

Transient adhesion in a non-fully detached contact

Liu

Zheng

et al. 2018

Sci Rep

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“…The convergence of this quadratic optimization is guaranteed, but the method fails when adhesion-like tensile contact tractions are assumed. It should be noted that adhesion was not considered either in the classic literature of viscoelastic contact, and its integration with SAM is still in its early stages [31].…”

Section: Assumptions and Limitationsmentioning

confidence: 99%

Modelling of Rough Contact between Linear Viscoelastic Materials

Spinu

Cerlinca

2017

Modelling and Simulation in Engineering

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The important gradients of stress arising in rough mechanical contacts due to interaction at the asperity level are responsible for damage mechanisms like rolling contact fatigue, wear, or crack propagation. The deterministic approach to this process requires computationally effective numerical solutions, capable of handling very fine meshes that capture the particular features of the investigated contacting surface. The spatial discretization needs to be supported by temporal sampling of the simulation window when time-dependent viscoelastic constitutive laws are considered in the description of the material response. Moreover, when real surface microtopography is considered, steep slopes inevitably lead to localized plastic deformation at the tip of the asperities that are first brought into contact. A computer model for the rough contact of linear viscoelastic materials, capable of handling deterministic contact geometry, complex viscoelastic models, and arbitrary loading histories, is advanced in this paper. Plasticity is considered in a simplified manner that preserves the information regarding the contact area and the pressure distribution without computing the residual strains and stresses. The model is expected to predict the contact behavior of deterministic rough surfaces as resulting from practical engineering applications, thus assisting the design of durable machine elements using elastomers or rubbers.

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“…The viscoelastic solution advanced in [2] employs a displacement field matching closely the indenter profile within the boundaries of the contact area, but does not guarantee that contact tractions are everywhere compressive. As shown in [9], the incorporation of adhesion in a contact model leads to equations that are highly nonlinear and may have multiple singularities, requiring the use of special numerical techniques such as the Particle Swarm Optimization method.…”

Section: Assumptions and Limitationsmentioning

confidence: 99%

Numerical simulations of rough contacts between viscoelastic materials

Spinu

Cerlinca

2017

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

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Abstract. The durability of the mechanical contact is often plagued by surface-related phenomena like rolling contact fatigue, wear or crack propagation, which are linked to the important gradients of stress arising in the contacting bodies due to interaction at the asperity level. The semi-analytical computational approach adopted in this paper is based on a previously reported algorithm capable of simulating the contact between bodies with arbitrary limiting surfaces and viscoelastic behaviour, which is enhanced and adapted for the contact of real surfaces with microtopography. As steep slopes at the asperity level inevitably lead to localized plastic deformation at the tip of the asperities that are first brought into contact, the viscoelastic behaviour is amended by limiting the maximum value of the pressure on the contact area to that of the material hardness, according to the Tabor equation. In this manner, plasticity is considered in a simplified manner that assures the knowledge of the contact area and of the pressure distribution without estimation of the residual state. The main advantage of this approach is the preservation of the algorithmic complexity, allowing the simulation of very fine meshes capable of capturing particular features of the investigated contacting surface. The newly advanced model is expected to predict the contact specifics of rough surfaces as resulting from various manufacturing processes, thus assisting the design of durable machine elements using elastomers or rubbers.

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Viscoelastic-adhesive contact modeling: Application to the characterization of the viscoelastic behavior of materials

Cited by 28 publications

References 72 publications

Transient adhesion in a non-fully detached contact

Transient adhesion in a non-fully detached contact

Modelling of Rough Contact between Linear Viscoelastic Materials

Numerical simulations of rough contacts between viscoelastic materials

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