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Journal Club for June 2020: Mechanically instructive biomaterials: a synergy of mechanics, materials and biology

 

Mechanically instructive biomaterials: a synergy of mechanics, materials and biology

Zhenwei Ma, Jianyu Li

Department of Mechanical Engineering, McGill University, Montreal, Canada

 

mohsenzaeem's picture

Length scale insensitive phase-field fracture methodology for brittle and ductile materials

Dear colleagues, I would like to share our new article (open access) that presents length scale insensitive phase-field fracture models for brittle and ductile fracture to address the deficiencies of the widely implemented models which over-estimate crack dissipation. 

W. Huber and M. Asle Zaeem. Length scale insensitive phase-field fracture methodology for brittle and ductile materials. Theoretical and Applied Fracture Mechanics 133 (2024) 104500.

mohsenzaeem's picture

A phase-field model for study of ferroelastic deformation behavior in yttria stabilized zirconia

Dear colleagues, our new article (open access) is just published in Acta Materialia. In this research, we provide new insights into the mechanism of ferroelastic deformation by studying the evolution of domains in different microstructure patterns and under different loading directions and strain rates.

A. Bhattacharya and M. Asle Zaeem. A phase-field model for study of ferroelastic deformation behavior in yttria stabilized zirconia. Acta Materialia (2024) 120039.

Fan Xu's picture

Computational morphology and morphogenesis for empowering soft-matter engineering

Morphing soft matter, which is capable of changing its shape and function in response to stimuli, has wide-ranging applications in robotics, medicine and biology. Recently, computational models have accelerated its development. Here, we highlight advances and challenges in developing computational techniques, and explore the potential applications enabled by such models.

Yifan Yang, Fan Xu*

Nature Computational Science, 2024, https://doi.org/10.1038/s43588-024-00647-y

arash_yavari's picture

Universal Deformations and Inhomogeneities in Isotropic Cauchy Elasticity

For a given class of materials, universal deformations are those deformations that can be maintained in the absence of body forces and by applying solely boundary tractions. For inhomogeneous bodies, in addition to the universality constraints that determine the universal deformations, there are extra constraints on the form of the material inhomogeneities—universal inhomogeneity constraints. Those inhomogeneities compatible with the universal inhomogeneity constraints are called universal inhomogeneities.

dorduncu's picture

A review of peridynamic theory and nonlocal operators along with their computer implementations

This study presents a comprehensive exploration of Peridynamic (PD) theory, with a specific focus on its theoretical foundations and practical implementations, including various PD formulations and PD operators. The objective is to highlight the unique attributes of each PD formulation and assess their suitability in the framework of material failure simulations by providing an extensive literature review.

PhD position(s) in modeling of the interaction between phase transformations and plasticity

PhD position(s) is available for Fall 2024 or Spring 2025 in the Engineering Mechanics program in the Aerospace Engineering Department at Iowa State University (USA) to perform the theoretical and computational part of work on NSF- and ARO-funded projects on the interaction between phase transformations and plasticity at high pressures. Phase-field, micromechanical, and macroscale simulations using FEM are of interest in close collaboration with high-pressure experiments performed in our lab and at governmental synchrotron radiation facilities. MS degree is required.

Jinxiong Zhou's picture

A semi-analytical time-domain model with explicit fluid force expressions for fluidelastic vibration of a tube array in crossflow

It is widely acknowledged that fluidelastic instability (FEI), among other mechanisms, is of the greatest concern in the flow-induced vibration (FIV) of tube bundles in steam generators and heat exchangers. A range of theoretical models have been developed for FEI analysis, and, in addition to the earliest semi-empirical Connors’ model, the unsteady model, the quasi-steady model and the semi-analytical model are believed to be three advanced models predominant in the literature.

Jinxiong Zhou's picture

A semi-analytical time-domain model with explicit fluid force expressions for fluidelastic vibration of a tube array in crossflow

It is widely acknowledged that fluidelastic instability (FEI), among other mechanisms, is of the greatest concern in the flow-induced vibration (FIV) of tube bundles in steam generators and heat exchangers. A range of theoretical models have been developed for FEI analysis, and, in addition to the earliest semi-empirical Connors’ model, the unsteady model, the quasi-steady model and the semi-analytical model are believed to be three advanced models predominant in the literature.

Jinxiong Zhou's picture

A semi-analytical time-domain model with explicit fluid force expressions for fluidelastic vibration of a tube array in crossflow

It is widely acknowledged that fluidelastic instability (FEI), among other mechanisms, is of the greatest concern in the flow-induced vibration (FIV) of tube bundles in steam generators and heat exchangers. A range of theoretical models have been developed for FEI analysis, and, in addition to the earliest semi-empirical Connors’ model, the unsteady model, the quasi-steady model and the semi-analytical model are believed to be three advanced models predominant in the literature.

marc53042's picture

Postdoctoral Research Opportunity at TAMUG

The Ocean Engineering Structures and Extreme Material Laboratory (OESEM) of the Department of Ocean Engineering at the Texas A&M University, Galveston has an opening for 1-year Postdoc position (which may be extended anually upon contract renewal) to conduct research in the areas of computational fracture modeling and fluid-structure interaction (FSI) of gaseous mixtures starting in July 2024.

A pseudoelastic response of hyperelastic composites reinforced with nonlinear elastic fibrous materials: Continuum modeling and analysis

Abstract: The present study aims to develop a continuum-based model to predict the pseudoelastic behavior of biological composites subjected to finite plane elastostatics. The proposed model incorporates a hyperelastic matrix material reinforced with nonlinear fibers, addressing challenges such as irreversible softening responses, large deformations, and nonlinear stress–strain responses.

Article: A frequency-independent second-order framework for the formulation of experimental fluidelastic forces using hidden flow variables

The importance of fluidelastic forces in flow-excited vibrations is crucial, in view of their damaging potential. Flow-coupling coefficients are often experimentally obtained from vibration experiments, performed within a limited experimental frequency range. For any given flow velocity, these coefficients are typically frequency-dependent, as amply documented in the literature since the seminal work of Tanaka and Takahara.

mohsenzaeem's picture

Localized plastic strain accumulation in shape memory ceramics under cyclic loading

The premature failure of shape memory ceramics (SMCs) under cyclic loading is a critical issue limiting their applications as actuators and thermal protection layers. Martensitic phase transformation (MPT), essential for superelasticity and shape memory functionalities in SMCs, induces localized plastic deformations due to phase expansion. In polycrystalline materials, the accumulation of localized plastic strain serves as the primary mechanism for fatigue crack initiation under cyclic loading.

SwarnavaGhosh's picture

Violation of the Cauchy-Born rule in High Entropy Alloys

Dear Colleagues,

I am sharing a recent paper titled "Violation of the Cauchy-Born Rule in multi-principal element alloys" published in Applied Physics Letters. Here is the link to the paper: https://doi.org/10.1063/5.0204091

alankar's picture

Finite element implementation of Field Crack Mechanics for brittle and ductile fracture

Sharing a new article "Finite element implementation of Field Crack Mechanics for brittle and ductile fracture" by my Ph.D. student BVSS Bharadwaja at IIT Bombay, which has been accepted for publication in Theoretical and Applied Fracture Mechanics. Also see attached. Thanks to Prof. Amit Acharya for the motivation and discussion.

alankar's picture

New article: An Experimentally Informed Continuum Grain Boundary Model

It is my pleasure to share a new article titled "An Experimentally Informed Continuum Grain Boundary Model" by Syed Ansari (my Ph.D. student at IIT Bombay). This work was performed in collaboration with Prof. Amit Acharya.

Ph.D. Position in Mechatronics Engineering at Kent State University, Kent, OH

An immediate Ph.D. position is available in the Control, Automation, and Mechatronics (CAM) lab at Kent State University, Kent, OH. The program is housed within the College of Aeronautics and Engineering and focuses on Mechatronics Engineering. Ideal candidates will need to have completed their master’s degree in electrical, mechanical, or mechatronics engineering by the end of 202. They must possess a strong foundation in controls and machine learning, along with proficient programming skills in Python and MATLAB.

Kshiteej Deshmukh's picture

Tight bounds correlating peak absorption with Q-factor in composites and metallic clusters of particles.

Dear colleagues, 

We invite you to read our article, which informs one about the extent to which resonances can be tuned in metamaterials. More precisely, our work provides tight bounds correlating the Quality-factor with peak absorption in dielectric metamaterials. The article is published in Applied Physics Letters and can be found here: https://doi.org/10.1063/5.0155092 

Zheng Jia's picture

EML Webinar Young Researchers Forum by Tongqing Lu, on 18 April 2024: High throughput rupture experiments of soft materials

EML Webinar (Young Researchers Forum) on 18 April 2024 will be given by Tongqing Lu at Xi'an Jiaotong University

Title: High throughput rupture experiments of soft materials

Discussion leader: Zhigang Suo, Harvard University

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