Article
Multidisciplinary Sciences
Shuo Zhou, Antoinette Tordesillas, Mehdi Pouragha, James Bailey, Howard Bondell
Summary: The study introduces a new metric called s-LID to identify and quantify hierarchies of kinematic patterns in heterogeneous media. Results show that the evolution of failure in deforming granular materials is governed by a complex symbiosis among different coexisting structures, with particle rotation playing an essential role in the transition to the shearband-dominated regime.
SCIENTIFIC REPORTS
(2021)
Article
Engineering, Geological
Tyler J. J. Oathes, Ross W. W. Boulanger
Summary: A numerical study was conducted to investigate the effects of viscoplasticity on localization processes in sensitive clays and plastic silts. The study employed a viscoplastic constitutive model to simulate laboratory specimens under monotonic, undrained, direct simple shear loading. Parametric analyses were performed to assess the influence of soil sensitivity, strain-softening rate, strain rate dependency, specimen size, mesh discretization, and loading rate. The results showed that the strain rate dependency of the soil's shearing resistance relative to its rate of postpeak strain softening primarily determines the global strain at which localization occurs. A regression model relating the onset of localization to the soil's strain rate dependency and postpeak strain-softening rate was proposed. The findings indicate that the inclusion of reasonable levels of viscoplasticity increases the strain development before localization in clays and plastic silts.
JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING
(2023)
Article
Multidisciplinary Sciences
Shiteng Zhao, Zezhou Li, Chaoyi Zhu, Wen Yang, Zhouran Zhang, David E. J. Armstrong, Patrick S. Grant, Robert O. Ritchie, Marc A. Meyers
Summary: High-entropy alloys (HEAs) show remarkable material properties under harsh conditions, with structures containing stacking faults, twins, transformation between crystal structures, and amorphization being generated through plastic deformation processes.
Article
Nanoscience & Nanotechnology
Chenglin Wang, Lipeng Ding, Shuyan Shi, Jiyu Liu, Wenlong Zhou, Qing Liu, Xuesong Fu, Zhihong Jia
Summary: In this study, it was found that heterostructure nanograins with a gradient grain size could suppress strain localization and provide additional strain hardening. The gradient distribution of the grain size played a significant role in shear band delocalization and refinement of ultrafine grains, thereby suppressing the strain localization. This research provides new insights into the role of gradient nanograins in suppressing strain localization and offers a new strategy for designing heterostructure nanograins to improve the ductility of nanograined metals.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Engineering, Mechanical
Wen An, Chuan-zhi Liu, Qi-lin Xiong, Zhenhuan Li, Xicheng Huang, Tao Suo
Summary: Shear localization in metals at high-strain rates is a significant failure mode, and predicting its occurrence and evolution accurately is a great challenge. A new dislocation-based crystal plasticity constitutive model with dynamic recrystallization as a crucial mechanism of shear instability was developed. The model was validated through numerical prediction and experimental data, showing that dynamic recrystallization can be a dominant mechanism for shear instability. The study also investigated the effects of loading mode and texture on shear localization in Cu-Al alloys. This work is important for understanding microstructural evolution in shear localization formation and designing microstructures to control or prevent shear localization.
INTERNATIONAL JOURNAL OF PLASTICITY
(2023)
Article
Astronomy & Astrophysics
Y. X. Gu, Y. Wang, F. S. Wei, X. S. Feng, X. J. Song, B. Y. Wang, P. B. Zuo, C. W. Jiang, X. J. Xu, Z. L. Zhou
Summary: The interaction between the solar wind and the magnetosphere is a crucial research subject. The dynamic processes at the magnetopause have been extensively analyzed based on various factors. This study proposes a quasi-elastodynamic process to explain the responses of the magnetopause to solar wind dynamic pressure variations. A new three-dimensional time-dependent magnetopause model is constructed and performs better than the widely used time-independent model.
ASTROPHYSICAL JOURNAL
(2023)
Article
Nanoscience & Nanotechnology
Ivan Lomakin, Alfiia Nigmatullina, Xavier Sauvage
Summary: The study found that the structural state has a significant impact on deformation mechanisms in a Cu - 2 wt.% Be alloy. Homogeneous deformation in the solid solution led to a significant reduction in grain size, while shear localization occurred in the precipitated state. Discussions were also made on the role of CuBe precipitates in hindering dislocation glide under large strain.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Engineering, Industrial
Heinrich Traphoener, Till Clausmeyer, A. Erman Tekkaya
Summary: A new grooved specimen and three methods for measuring very high shear strains were introduced, achieving accurate measurements under high strain conditions.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2021)
Article
Geochemistry & Geophysics
T. K. Cawood, J. P. Platt
Summary: The study reconstructed the geometry and rheology of the Simplon Shear Zone, finding that the width increases with depth and during exhumation, weak mica layers formed, increasing strain localization.
Article
Engineering, Mechanical
Zhangtao Sun, Tianfu Guo, Khalil Elkhodary, Hang Yang, Nian Zhou, Shan Tang
Summary: This study investigates the strain localization behavior in nanoporous metallic materials using molecular dynamics simulations and a homogenized continuum theory. The importance of surface tension at the nanoscale and its effects on macroscopic behavior are explored through parametric studies and qualitative explanation of experimental results. The proposed model can contribute to extending the lifetime of irradiated metallic materials under complex loading conditions.
ACTA MECHANICA SINICA
(2022)
Article
Engineering, Multidisciplinary
G. Alhakim, C. Nunez-Temes, J. Ortiz-Sanz, M. Arza-Garcia, Lina Jaber, M. L. Gil-Docampo
Summary: This study aims to evaluate the potential application of Digital Image Correlation (DIC) in direct shear test (DST) for soils. A new shear box was designed to investigate the behavior of granular materials, and measurements of displacements, strains, and shear angle were conducted under different normal stresses. Observations were made on the immediate settlement, dilative behavior, and the formation of a shear band at the interface between the boxes. The use of DIC in soil mechanics opens up new possibilities and overcomes some limitations of conventional DST.
Article
Engineering, Environmental
Xiaoliang Yao, Wenli Wang, Mingyi Zhang, Songhe Wang, Liping Wang
Summary: This study conducted plane strain tests on coarse frozen sand under different temperatures and loading conditions, analyzing the strain localization characteristics with PIV technique. The results show that temperature and strain rate have little influence on shear band formation, and X shape shear bands are more likely to be generated at lower strain rates. Additionally, most of the strain field is in a dilatancy state at failure, and the shear band inclination angle and width are inversely proportional to temperature.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2021)
Article
Mathematics, Interdisciplinary Applications
Ehsan Haghighat, David Santillan
Summary: We introduce a phase-field model that utilizes the deviatoric stress decomposition to represent shear fractures. This approach allows us to incorporate the general three-dimensional Mohr-Coulomb failure function for establishing relationships and evaluating peak and residual stresses. Our model demonstrates impressive performance in several benchmark problems involving shear fracture and strain localization. It successfully captures the conjugate failure modes during biaxial compression tests and addresses the challenging slope stability problem faced by most geomechanics models.
COMPUTATIONAL MECHANICS
(2023)
Article
Engineering, Geological
Chengwei Zhu, Chong Peng, Wei Wu
Summary: This study developed a smoothed particle hydrodynamics code based on micropolar continua for geomaterials, suitable for problems involving large deformation and shear strain localization. The performance of the newly proposed method was demonstrated through simulations of two typical geotechnical problems, and a parameter study was conducted on the scale effect in micropolar continua.
Article
Physics, Multidisciplinary
Hang Li, Zhaoli Dong, Stefano Longhi, Qian Liang, Dizhou Xie, Bo Yan
Summary: Aharonov-Bohm (AB) caging is a special flat-band localization mechanism that has attracted great interest in the study of quantum transport in flatband systems. This system exhibits unique behavior due to the interplay between geometric frustration, disorder, and correlations.
PHYSICAL REVIEW LETTERS
(2022)
Article
Multidisciplinary Sciences
L. Rathbun, E. G. Colicino, J. Manikas, J. O'Connell, N. Krishnan, N. S. Reilly, S. Coyne, G. Erdemci-Tandogan, A. Garrastegui, J. Freshour, P. Santra, M. L. Manning, J. D. Amack, H. Hehnly
NATURE COMMUNICATIONS
(2020)
Article
Biophysics
Diogo E. P. Pinto, Gonca Erdemci-Tandogan, M. Lisa Manning, Nuno A. M. Araujo
BIOPHYSICAL JOURNAL
(2020)
Article
Physics, Multidisciplinary
David Richard, Geert Kapteijns, Julia A. Giannini, M. Lisa Manning, Edan Lerner
Summary: The study proposes a simple definition of shear transformation zones (STZs) based on the harmonic approximation of a glass's energy, which is shown to be more broadly applicable than previous anharmonic definitions. An open-source library is provided for analyzing low-lying STZs in computer glasses and laboratory materials. The results represent a methodological advancement towards characterizing mechanical disorder in glasses and understanding their yielding behavior.
PHYSICAL REVIEW LETTERS
(2021)
Article
Multidisciplinary Sciences
John Devany, Daniel M. Sussman, Takaki Yamamoto, M. Lisa Manning, Margaret L. Gardel
Summary: Epithelial tissues have distinctive cellular architectures that can be controlled by changes in cell shape. In a model epithelial monolayer, cell shape evolves over time, leading to a final architecture characterized by arrested motion and regular cell shapes. The final cell shape is closely correlated with cell proliferation rate, and pharmacological perturbations can significantly alter tissue dynamics by changing cell shapes.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Multidisciplinary Sciences
Peter K. Morse, Sudeshna Roy, Elisabeth Agoritsas, Ethan Stanifer, Eric Corwin, M. Lisa Manning
Summary: The similarities in mechanical properties between dense active matter and sheared amorphous solids have been investigated through a mean-field model, showing equivalent critical behavior in infinite dimensions. Numerical tests in two dimensions confirm the accuracy of these predictions, suggesting a universal framework for predicting flow, deformation, and failure in active and sheared disordered materials.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Biochemical Research Methods
Gonca Erdemci-Tandogan, M. Lisa Manning
Summary: This study examines the impact of T1 delay time on tissue mechanics, showing that T1 delay enhances tissue elasticity and increases the percentage of higher-fold coordinated vertices and rosettes. The findings suggest that the molecular-scale T1 delay time plays a crucial role in the global tissue response.
PLOS COMPUTATIONAL BIOLOGY
(2021)
Article
Physics, Multidisciplinary
O. K. Damavandi, M. L. Manning, J. M. Schwarz
Summary: This study proposes an effective medium theory for random regular spring networks with purely geometrical disorder to predict their stiffness through the distribution of tensions. The study finds a linear dependence of stiffness on strain in the rigid phase and a nontrivial dependence on both the mean and standard deviation of the tension distribution. Although the theory does not accurately predict shear modulus due to spatial heterogeneities, it serves as an ideal starting point for experimentalists to quantify the mechanics of such networks.
Article
Multidisciplinary Sciences
Varda F. Hagh, Sidney R. Nagel, Andrea J. Liu, M. Lisa Manning, Eric Corwin
Summary: The introduction of transient degrees of freedom can lead to stable jammed packings with deep energy minima, and different choices for the added degrees of freedom can result in different training outcomes.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Biophysics
E. Lawson-Keister, M. L. Manning
Summary: Studied the potential mechanisms for collective chemotaxis in cellular monolayers, and found that advection, contact inhibition of locomotion, and heterotypic interfacial tension can all drive collective chemotaxis. The scaling behavior of cluster motion was well captured by simple analytic theories.
BIOPHYSICAL JOURNAL
(2022)
Article
Physics, Multidisciplinary
M. Lisa Manning
Summary: The field of soft matter physics has expanded rapidly in recent decades, revealing the importance of entropy, elasticity, and geometry in understanding various materials and systems. Similarly, the fields of biological physics and the physics of living systems have gained recognition as independent areas of study, aided by tools from molecular and cell biology and optical physics. This Essay explores two future challenges at the intersection of these two fields: the characterization of emergent behavior and the manipulation of highly deformable active objects. Progress in these areas holds the potential for creating adaptive smart materials and advancing our understanding of biological function, particularly in the fight against disease.
PHYSICAL REVIEW LETTERS
(2023)
Article
Chemistry, Physical
Ethan Stanifer, M. Lisa Manning
Summary: Under applied shear strain, particles in granular and amorphous materials undergo localized deformations, forming avalanches. The dynamics during these avalanches have been studied using numerical simulations and persistent homology methods. It has been found that bursts of localized deformations occur at identified localized excitations using the linear spectrum. This new framework provides insights for understanding avalanche statistics in glasses and granular matter.
Article
Physics, Fluids & Plasmas
Ojan Khatib Damavandi, Varda F. Hagh, Christian D. Santangelo, M. Lisa Manning
Summary: This paper discusses the calculation method of energetic rigidity and applies it to examples in two dimensions. Underconstrained spring networks and vertex models require second-order rigidity to predict their rigidity, while overconstrained spherical jammed packings can be calculated using first-order constraint counting. Aspherical jammed packings are jammed at hypostaticity and require a modified constraint counting.
Article
Physics, Fluids & Plasmas
Ojan Khatib Damavandi, Varda F. Hagh, Christian D. Santangelo, M. Lisa Manning
Summary: Rigidity plays a crucial role in the integrity and function of various physical and biological systems. This paper introduces the concept of energetic rigidity, which is a more practical notion of rigidity compared to commonly used rigidity tests. The formalism of energetic rigidity not only unifies our understanding of mechanical stability but also opens up new avenues for material design.
Article
Chemistry, Physical
Takaki Yamamoto, Daniel M. Sussman, Tatsuo Shibata, M. Lisa Manning
Summary: This study investigates how spatiotemporally heterogeneous forces affect the dynamical and mechanical properties of confluent tissue. The authors find that the long-time diffusion constant describing cell rearrangements depends non-monotonically on the persistence time, while increasing monotonically with the amplitude of the fluctuating tension.
Article
Developmental Biology
Paula C. Sanematsu, Gonca Erdemci-Tandogan, Himani Patel, Emma M. Retzlaff, Jeffrey D. Amack, M. Lisa Manning
Summary: This study investigates whether 3D mechanical drag forces generated by Kupffer's Vesicle motion through the tailbud tissue are sufficient to drive cell shape changes necessary for establishing the left-right axis in zebrafish embryos. Using simulations and experiments, researchers demonstrate that the tailbud tissue can produce drag forces and drive cell shape changes, and observe velocity gradients around Kupffer's Vesicle consistent with a viscoelastic response. This work suggests that 3D viscoelastic drag forces may be a generic mechanism for cell shape change in various biological processes.
CELLS & DEVELOPMENT
(2021)
