Effects of equivalent beam element on the in-plane shear performance of 3D stochastic fibrous networks

Long, Kecai; Shi, Liping; Zhong, Yi; Luo, Guoquan; Ma, Xiaoliang; Li, Mingwei; He, Xiaodong; Guan, Chunlong

doi:10.1016/j.ceramint.2019.03.158

Cited by 7 publications

(2 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To theoretically tackle this issue, theoretical mechanical models based on process–structure–performance relationships have been developed, including the strength-hardening model, porous bodies model, and equivalent beam model . The aforementioned model may describe the mechanical characteristics of MNs at different failure regions on a macrolevel and is consistent with the mechanical behavior of MNs in their respective work.…”

Section: Introductionmentioning

confidence: 99%

A Fiber Sliding–Orientation Based Micromechanics Failure Model for Melt-Blown Nonwovens

Liu,

Wang

et al. 2023

Langmuir

View full text Add to dashboard Cite

The mechanical model of melt-blown nonwovens (MNs) serves as the foundation for performance optimization, which can offer helpful guidance for product material selection, structural design, and cost control. However, it is challenging to describe the micromechanics failure mechanism of MNs using the traditional mechanical model, which aims to match the model curve with the experimental result at the macrolevel. Herein, a micromechanics failure model for MNs based on sliding–orientation competition is developed. Through in situ observations of fiber position changes and the fluctuation of stress–strain curves, fiber sliding and orientation are introduced into the failure process of MNs. Due to fiber bonding and static friction, only orientation happens during the first stage of stretching. In dramatic contrast, the fibers will slide and orient in the second stage of stretching to change their positions in response to the external force. Sliding friction, fiber bonding, and static friction make up the stress of MNs, and the conflict of fiber sliding and orientation causes variations in the stress. The model has been successfully applied to polylactic acid (PLA) MNs, which proves the effectiveness of the model in MNs.

show abstract

Section: Introductionmentioning

confidence: 99%

A Fiber Sliding–Orientation Based Micromechanics Failure Model for Melt-Blown Nonwovens

Liu,

Wang

et al. 2023

Langmuir

View full text Add to dashboard Cite

show abstract

“…These studies invariably proceed by constructing a high fidelity finite element model of a particular configuration of CFN and comparing it to a nicely constructed experiment. Long et al [14] specializes to finite element beam models which is in principle more efficient and Zhang et al [15] studied homogenization of representative volume elements of fiber networks. From a bottom-up modeling perspective, peridynamics modeling of CFN [16,17] reproduced qualitatively striking aspects of fracture but ultimately were limited to relatively small simulation sizes.…”

Section: Introductionmentioning

confidence: 99%

A multiscale cohesive law for carbon fiber networks

Schill

Abbott

Haskins

2021

Carbon

View full text Add to dashboard Cite

Better predictive models of mechanical failure in lowweight heat shield composites would aid material certification for missions with aggressive atmospheric entry conditions. Here, we develop such a model for the rapid engineering analysis of the failure limits of phenolic impregnated carbon ablator (PICA) -a leading heat shield material whose structural component is a carbon fiber network. We hypothesize inelastic deformation failure mechanisms and model their behavior using molecular dynamics simulations to calculate the binding energy. We then upscale this binding energy to the macroscale using a renormalization argument. The approach delivers insightful and reasonably accurate macroscale predictions that compare favorably to experiments. In application, the model is validated for a particular variety of PICA by comparison to experiment and would then be used to study design scenarios in different entry conditions.

show abstract

A novel strategy in micomechanics modeling of silica fibrous ceramics considering morphology-related sintering effects

Long,

Zhong,

Wang

et al. 2023

Composites Part A: Applied Science and Manufacturing

View full text Add to dashboard Cite

Effects of equivalent beam element on the in-plane shear performance of 3D stochastic fibrous networks

Cited by 7 publications

References 32 publications

A Fiber Sliding–Orientation Based Micromechanics Failure Model for Melt-Blown Nonwovens

A Fiber Sliding–Orientation Based Micromechanics Failure Model for Melt-Blown Nonwovens

A multiscale cohesive law for carbon fiber networks

A novel strategy in micomechanics modeling of silica fibrous ceramics considering morphology-related sintering effects

Contact Info

Product

Resources

About