Delamination of a rigid punch from an elastic substrate under normal and shear forces

Sun, Xiaohao; Yu, Luxia; Rentschler, Mark E.; Wu, Huan; Long, Rong

doi:10.1016/j.jmps.2018.09.009

Cited by 33 publications

(23 citation statements)

References 41 publications

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“…Moreover, the utilization of elastomeric icephobic surfaces has exposed the role of interfacial cavitation to reduce the shear strength of ice adhesion [27][28][29]. Cavitation is a primarily tension driven phenomenon [30]; thus, it is important to quantify the difference if any, between shear and tensile adhesion of the icesolid interface. This paper embraces a fracture mechanics approach to delineate the difference between direct-shear and push-out tests.…”

Section: Fig 1 Summary Of Reported Ice Adhesion Strength For An Ice/mentioning

confidence: 99%

Characterization of Ice Adhesion: Approaches and Modes of Loading

Dawood

Yavas

Giuffre

et al. 2020

Aiaa Aviation 2020 Forum

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Airborne structures are vulnerable to atmospheric icing in cold weather operation conditions. Most of the ice adhesion-related works have focused on mechanical ice removal strategies because of practical considerations, while limited literature is available for a fundamental understanding of the ice adhesion process. Here, we present fracture mechanics-based approaches to characterize interfacial fracture parameters for the tensile and shear behavior of a typical ice/aluminum interface. An experimental framework employing single cantilever beam, direct shear, and push-out shear tests were developed to achieve near mode-I and near mode-II fracture conditions at the interface. Both analytical (beam bending and shear-lag analysis), and numerical (finite element analysis incorporating cohesive zone method) models were used to extract mode-I and II interfacial fracture parameters. The combined experimental and numerical results, as well as surveying published results for the direct shear and push-out shear tests, showed that mode-II interfacial strength and toughness could be significantly affected by the test method due to geometrically induced interfacial residual stress. As a result, the apparent toughness of the zeroangle push-out test could reach an order of magnitude higher than those derived from direct shear tests. Moreover, it was found that the interfacial ice adhesion is fracture mode insensitive and roughness insensitive for tensile and shear modes, for the observed modes of failures in this study Disciplines Disciplines Aeronautical Vehicles | Structures and Materials Comments Comments

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Section: Fig 1 Summary Of Reported Ice Adhesion Strength For An Ice/mentioning

confidence: 99%

Characterization of Ice Adhesion: Approaches and Modes of Loading

Dawood

Yavas

Giuffre

et al. 2020

Aiaa Aviation 2020 Forum

View full text Add to dashboard Cite

show abstract

“…In this study, we assume that all CZM parameters are the same in three directions. In general, the F c is insensitive to the shape of the traction-separation curve when W ad is constant and δ f is much smaller than the characteristic length scales of the contacting region (a in this study) [15,16]. In this study, δ f = 0.02 mm, δf/a = 0.0008. σmax = 0.04 MPa (40 kPa) is roughly estimated from the value of ice adhesion strength (0~100 KPa) of a typical ice-phobic coating.…”

Section: Cohesive Zone Model (Czm)mentioning

confidence: 61%

“…However, in actual situations, adhesion energy W ad and interface adhesion strength σ max are limited, preventing the infinite growth of F c . Some researchers [15,16] have shown that when the thickness of the film is small enough, F c remains nearly constant. Interfacial debonding behavior is governed by t, E, v, W ad , σ max , etc.…”

Section: Introductionmentioning

confidence: 99%

The Mechanical Mechanism and Influencing Factors of Ice Adhesion Strength on Ice-Phobic Coating

Xie

Hao

Wang

et al. 2021

JMSE

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Ice accretion can cause problems on polar ships, ocean platforms, and in other marine industries. It is important to understand the interface debonding behavior between ice and the surface of equipment. In this work, we created a mechanical model to analyze the interface debonding behavior between a square-based ice cuboid and an elastic coating base, using contact mechanics and fracture mechanics. Three-dimensional (3D) finite element (FE) simulation was used to simulate the interface debonding for normal and shear separation. A bilinear cohesive zone model (CZM) was used to simulate the interface between the ice cuboid and the elastic coating. We investigated the effect of the elastic modulus E of an elastic film on the critical detachment force Fc for normal and shear separation. The results showed that Fc increases with an increase of the elastic modulus of the elastic film. When E exceeds a certain level, Fc achieves a constant value and then remains stable. Finally, a series of epoxy/polydimethylsiloxane (PDMS) interpenetrating polymer-network (IPN) gel coatings with different elastic moduli were prepared. The ice tensile and shear adhesion strengths (σice and τice) of the coatings were measured. The results were roughly consistent with the results of the numerical simulation when E < 1 MPa.

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“…Therefore, the initiation and extension of the crack are judged using the quadratic nominal stress criterion. [40][41][42] In this criterion, the effects of normal stress and shear stress are considered and determined by three nominal stress components and three nominal stress peaks. This criterion can be expressed as where t n , t s , and t t represent the normal, the first, and the second shear stress components, respectively, t 0 n , t 0 s , and t 0 t refer to the normal and two shear strength of intact cohesive surfaces, respectively.…”

Section: Traction-separation Lawmentioning

confidence: 99%

“…In complex three‐dimensional fracture propagation, there are many mixed extension modes due to interactions between HFs and NFs. Therefore, the initiation and extension of the crack are judged using the quadratic nominal stress criterion 40‐42 . In this criterion, the effects of normal stress and shear stress are considered and determined by three nominal stress components and three nominal stress peaks.…”

Section: Mathematical Modelmentioning

confidence: 99%