Study on the creep behavior of recombinant bamboo based on a modified generalized Kelvin model

Sun, Songsong

doi:10.1007/s00226-022-01362-5

Cited by 6 publications

(4 citation statements)

References 17 publications

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“…In summary, a short-time ratcheting with negligible fatigue damage is the main cause of the deformation of the SIP joint when the loading-unloading process has fewer than 100 cycles. Several creep models are available to evaluate the residual strain due to the timedependent loading history, including the Norton model [27], Burgers model [28], and Kelvin model [29], etc. For a given constant stress, the creep strain due to the stress holding time is determined using the Norton model, which is shown as…”

Section: The Loading-unloading Tensile Response With Ratcheting Effectmentioning

confidence: 99%

Experimental Investigation of the Mechanical Behavior of the Strain Isolation Pad in Thermal Protection Systems under Tension

Lu,

Wu,

Hao

et al. 2024

Aerospace

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A strain isolation pad is a critical connection mechanism that enables deformation coordination between the rigid thermal insulation tile and the primary structure in the thermal protection system of a reusable hypersonic vehicle. An experimental investigation has been conducted to determine the static, loading–unloading, and high-cycle fatigue (HCF) responses of the SIP with 0.2 mm adhesive under through-thickness tension at room temperature. The contributions of the rigid thermal insulation tile and metallic substructure have not been considered so far. The results indicate that the tensile behavior of the SIP joint is highly nonlinear. The static and fatigue tensile failures both initiate from the corner close to the adhesive/SIP interface due to the stress concentration and the edge effect. The uniform breakage of the aramid fiber can be seen on the cross-section. A novel method is proposed to quantify the residual strain due to the short-time ratcheting effect of the SIP joint in the initial loading–unloading tensile response. As the number of fatigue cycles increases, the thickness of the SIP joint continues to increase until failure. An explicit expression associated with the growth of SIP joint thickness, fatigue cycle number, and peak cyclic stress is established. The turning point of the thickness growth rate with the fatigue cycle number is proposed as a new fatigue failure index for the SIP joint under tensile fatigue, and a fatigue life prediction model is developed.

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Section: The Loading-unloading Tensile Response With Ratcheting Effectmentioning

confidence: 99%

Experimental Investigation of the Mechanical Behavior of the Strain Isolation Pad in Thermal Protection Systems under Tension

Lu,

Wu,

Hao

et al. 2024

Aerospace

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“…Recent years have also seen reports of creep research on bamboo‐based composites 21–26 . Ma et al 22 investigated the flexural creep and recovery behavior of bamboo‐laminated veneer lumber (BLVL) at various stress levels for 1 year.…”

Section: Introductionmentioning

confidence: 99%

“…Recent years have also seen reports of creep research on bamboo-based composites. [21][22][23][24][25][26] Ma et al 22 investigated the flexural creep and recovery behavior of bamboo-laminated veneer lumber (BLVL) at various stress levels for 1 year. Zhao et al 23 and Sun et al 24 focused on the creep behavior of bamboo scrimber and used the Burgers model and a modified generalized Kelvin model to describe the viscoelasticity constitutive relationship under bending and tension, respectively.…”

mentioning

confidence: 99%

“…[21][22][23][24][25][26] Ma et al 22 investigated the flexural creep and recovery behavior of bamboo-laminated veneer lumber (BLVL) at various stress levels for 1 year. Zhao et al 23 and Sun et al 24 focused on the creep behavior of bamboo scrimber and used the Burgers model and a modified generalized Kelvin model to describe the viscoelasticity constitutive relationship under bending and tension, respectively. Furthermore, Zanker et al 25 performed an ANSYS numerical simulation to analyze the tensile and compressive creep behavior of bamboo scrimber utilizing a generalized time hardening model.…”

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confidence: 99%

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Characterization and modeling of creep behavior of glued laminated bamboo

Liu,

Wang,

et al. 2023

Polymer Composites

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The benefits of using glued laminated bamboo (GLB) as a structural material are numerous, such as its low weight, high specific strength, and low carbon footprint. However, as a viscoelastic material, GLB materials exhibit creep, which is a significant characteristic that needs to be considered. To ensure the safety and serviceability of structures that utilize GLB, it is essential to accurately estimate the long‐term performance of GLB composites under external forces. This paper reports on an experimental investigation into the creep characteristics of GLB under tensile and compressive loads. The experiments were conducted at various load levels for a period of 500 h under a controlled environmental condition. The Burgers model and the five‐parameter model were used to characterize creep behavior and predict the long‐term deformation by extrapolating beyond the experimental period. The long‐term deformation of the GLB may be overestimated by the Burgers model due to its constant creep rate for the viscous component. In contrast, the five‐parameter model introduces a modification factor that results in a nonlinear viscous component, allowing a more accurate fit and a reasonable deformation estimate.Highlights Creep characteristics of GLB were studied under tensile and compressive loads. Burgers and five‐parameter models were used to describe the creep behavior. Extrapolation of Burgers model overestimates the creep deformation of GLB. Five‐parameter model provides reasonable deformation estimate for GLB.

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Prediction of the long-term flexural behavior of glued laminated bamboo using accelerated creep test

Liu,

Huang,

Sheng

et al. 2023

Wood Sci Technol

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Study on the creep behavior of recombinant bamboo based on a modified generalized Kelvin model

Cited by 6 publications

References 17 publications

Experimental Investigation of the Mechanical Behavior of the Strain Isolation Pad in Thermal Protection Systems under Tension

Experimental Investigation of the Mechanical Behavior of the Strain Isolation Pad in Thermal Protection Systems under Tension

Characterization and modeling of creep behavior of glued laminated bamboo

Prediction of the long-term flexural behavior of glued laminated bamboo using accelerated creep test

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