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Journal Club for January 2021: 3D Printing of Soft Materials

3D Printing of Soft Materials

Qi (Kevin) Ge

Department of Mechanical and Energy Engineering

Sourthern University of Science and Technology, Shenzhen, China

 

1. Introduction

lijianyu's picture

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

 

Teng Li's picture

EML Webinar

  • Mark your calendar: every Wednesday at 9:30 am Boston, 2:30 pm London, 3:30 Paris, 10:30 pm Beijing.
  • Join live webinars in two ways: Zoom (for attending the lecture and participating in the discussion) or YouTube Live Stream.
  • Watch videos of past EML Webinars on YouTube or Weibo.

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Antonio Papangelo's picture

Experimental observations of nonlinear vibration localization in a cyclic chain of weakly coupled nonlinear oscillators

Experimental results on nonlinear vibration localization in a cyclic chain of weakly coupled oscillators with clearance nonlinearity are reported. Numerical modelling and analysis complements the experimental study. A reduced order model is derived and numerical analysis based on the harmonic balance method demonstrates the existence of multiple classes of stable spatially localized nonlinear vibration states. The experiments agree very well with the numerical results.

Postdoc Position of Power Electronics at Virginia Tech (On Power Electronics for 100 W-100 kW Ocean Energy Harvesting)

Position Summary:

This position requires a Ph.D. degree in Electrical Engineering or a related engineering field with experience on power electronics design and implementation from 100 W to 100kW. As part of this position, the candidate will be expected to contribute significantly to ongoing and potential future related projects, including ocean wave energy conversion, ocean tidal and current energy conversion, offshore wind energy, and regenerative vibration control, funded by the U.S DOE, ONR, NSF, national labs, and industry. The candidate will also be engaged with other research, development and outreach activities of the Center for Energy Harvesting Materials and Systems (CEHMS).

Roles and Responsibilities:

1.    Conduct research on topics across power electronics for off-grid and grid applications, including AC/DC and DC-DC converter design, energy storage, power management, maximum power tracking, feedback control, etc.

2.    Significantly contribute to multiple concurrent projects through research design, data collection, analysis, modeling, simulation, implementation, and demonstration.

3.    Manage project activities and staff, including mentorship of doctoral, master’s, and undergraduate students.

4.    Develop new research programs and other professional duties in a timely manner.

5.    Collaborate with faculty, researchers, staff, and students in the project team at VT and from external organizations, to:

a.        Successfully complete research deliverables;

b.       Disseminate efforts and findings from research and outreach initiatives including manuscripts in peer-reviewed publications, topical conferences, symposia, and workshops.

How to apply:

Candidates with required knowledge and experiences can send resume with contacts of three references to Prof. Lei Zuo (leizuo@vt.edu)

Lei Zuo, Ph.D,  Robert E. Hord Jr. Professor

Professor of Mechanical Engineering

Professor of Electrical and Computer Engineering

Director, NSF IUCRC Center for Energy Harvesting Materials and Systems

Virginia Tech,  Blacksburg, VA 24061, USA

  Email: leizuo@vt.edu, Phone: 540-231-7270

 

Postdoctoral Position in Phase Field Modeling of Oxide Film Growth

The Materials Theory Group at the School of Materials Engineering of Purdue University has a postdoctoral opening in the area of phase field modeling of oxide film growth. The postdoc will use the phase field approach to investigate the growth of metal oxide films in an oxidizing environment, emphasizing the film grain morphology, composition, and stress distribution. The ideal candidate will have a strong background in phase field modeling with elastic effects and excellent computational skills. For inquiry, please email Professor Anter El-Azab (aelazab@purdue.edu). This position is part of a collaborative project with a materials research and software development company, and it will be available as early as April 1, 2021. The position will remain open until filled. Interested candidates can send a curriculum vita with list of publications, about half a page statement of research interests, and the names and contact information of at least two references. The Materials Theory Group performs theoretical and computational research in the areas of dislocation dynamics and mesoscale plasticity, radiation effects in materials, phase field method and applications to microstructure evolution in materials, phonon and electron thermal transport in crystalline solids, and computational methods for materials science and mechanics.
EEO/AA Policy:
Purdue University is an EOE/AA employer. All qualified individuals, including minorities, women, individuals with disabilities, and veterans are encouraged to apply.
Department Website https://engineering.purdue.edu/MSE

Postdoctoral Position in Phase Field Modeling of Oxide Film Growth

The Materials Theory Group at the School of Materials Engineering of Purdue University has a postdoctoral opening in the area of phase field modeling of oxide film growth. The postdoc will use the phase field approach to investigate the growth of metal oxide films in an oxidizing environment, emphasizing the film grain morphology, composition, and stress distribution. The ideal candidate will have a strong background in phase field modeling with elastic effects and excellent computational skills. For inquiry, please email Professor Anter El-Azab (aelazab@purdue.edu). This position is part of a collaborative project with a materials research and software development company, and it will be available as early as April 1, 2021. The position will remain open until filled. Interested candidates can send a curriculum vita with list of publications, about half a page statement of research interests, and the names and contact information of at least two references. The Materials Theory Group performs theoretical and computational research in the areas of dislocation dynamics and mesoscale plasticity, radiation effects in materials, phase field method and applications to microstructure evolution in materials, phonon and electron thermal transport in crystalline solids, and computational methods for materials science and mechanics.
EEO/AA Policy:
Purdue University is an EOE/AA employer. All qualified individuals, including minorities, women, individuals with disabilities, and veterans are encouraged to apply.
Department Website https://engineering.purdue.edu/MSE

Postdoc openings in metal 3D printing at Tsinghua University

We have two postdoc openings in the field of laser additive manufacturing of metals at Tsinghua University. The candidates are required to have expertise in synchrotron x-ray techs, metal additive manufacturing, electron microscopy (TEM/SEM), structural phase transformation, or micromechanics. This is a two-year appointment with the possibility of renewal. See more information here (in Chinese): https://lnkd.in/g-HbcqH

Wenbin Yu's picture

Global Composites Experts Webinar by Dr. Conchur O Bradaigh

cdmHUB invites you to attend the Global Composites Experts Webinar Series. 

Title: Novel Power Epoxy Composites for Thin-Section Structures

Speaker: Dr. Conchur O Bradaigh

Time: 1/21, 11AM-12PM EST.

Please go to https://www.purdue.edu/cmsc/events/2020-webinars/ to register for this webinar.

shimahajimirza's picture

immediate post-doc positions at Stevens Institute of Technology

Energy, Control and optimization lab(ECO) at Stevens Institute of Technology has two immediate post doc positions.

The candidates should have a degree in Computer Science or have a prior experinec in Deep Learning and data analysis.

Please send your CV to shima.hajimirza@stevens.edu, if you have the right background and you can work as post-doc immediately.

 

 

kedarkirane's picture

Call for Abstracts: Mini-Symposium on Dynamic Fracture of Composites at the 2021 Mach conference

It gives me great pleasure to announce the mini-symposium titled "Characterization and Modeling of Dynamic Fracture of Composites" at the 2021 Mach conference, to be held virtually from April 7 to April 9 2021.

The Mach Conference showcases the state of the art of multiscale research in materials, with an emphasis on advancing the fundamental science and engineering of materials and structures in extreme environments

Payam Soltani's picture

Dynamic Modelling of a Hydraulic Engine Mount Including the Effects of Elastomer Aging

In this article, the effect of material aging of an elastomeric main spring (MS) inside a hydraulic engine mount (HEM) on its dynamic performance is investigated. A set of HEMs aged under realistic operational conditions are used to create an empirical material aging model of the elastomer at two different temperatures (35°C and 95°C) using dynamic mechanical thermal analysis (DMTA).

Cemal Basaran's picture

A unified mechanics theory-based model for temperature and strain rate dependent proportionality limit stress of mild steel

Strain rate and temperature dependent elastic limit of mild steel is investigated by developing a dislocation incipient motion-based proportionality limit stress model. Temperature effect on strain energy of an edge dislocation is modeled by using unified mechanics theory. Unified mechanics theory-based index, called thermodynamic state index, is used to model thermally assisted degradation of strain energy. Kinetic energy due to thermal vibrations is added to the kinetic energy of an accelerating dislocation.

Postdoc Position available in Experimental Mechanics in the Franck Lab at Wisconsin

Experimental Mechanics Postdoc position available starting summer 2021 in the Franck Lab at the University of Wisconsin-Madison (https://www.franck.engr.wisc.edu/)

 

Opening at MIT Department of Mechanical Engineering on Biomedical Device Development

The Traverso Laboratory is seeking a PhD-level mechanical/biomedical engineer to join the team focused on the development of novel gastrointestinal devices for treatment of major diseases. This includes technologies such as drug delivery systems, smart pills and stents, soft actuators, and ingestible electronics. The ideal candidate will have extensive experience designing and analyzing mechanical systems and materials for biological application.

PhD Scholarships in Computational Mechanics and Machine Learning, School of Civil and Environmental Engineering, UNSW Sydney, Australia

Professor Nasser Khalili's research group at the School of Civil and Environmental Engineering, UNSW Sydney, Australia (https://www.engineering.unsw.edu.au/civil-engineering/staff/nasser-khalili), is looking for several PhD students on the following topics:

 

1) Computational Mechanics of Multiphase Porous Materials

2) Geo-structure Health Monitoring and Predictive Maintenance

Theoretical and Applied Fracture Mechanics' free-of-charge live webinar by Prof. David McDowell - Friday (15/1) at 2 pm GMT

As the Editor-in-Chief of Theoretical and Applied Fracture Mechanics (TAFMech, https://www.journals.elsevier.com/theoretical-and-applied-fracture-mechanics/), this post is to invite you all to attend our first free global live webinar on Fracture Mechanics-related topics that will take place this Friday (15/1) at 2 pm GMT:

Ruobing Bai's picture

Collective behavior in the kinetics and equilibrium of solid-state photoreaction

Dear Colleagues,

Here is our recent paper published in EML on collective behavior in solid-state photoreaction. Combining statistical mechanics and continuum mechanics, we build a model to predict and explain multiple collective behaviors reported in experiments of solid-state photoreaction for the first time.

Collective behavior in the kinetics and equilibrium of solid-state photoreaction

Ruobing Bai, Ying Shi Teh, Kaushik Bhattacharya*

Antonio Papangelo's picture

Vibration localization due to flutter instability in a bladed rotor

The current push toward lightweight structures in aerospace and aeronautical engineering is leading to slender design airfoils, which are more likely to undergo large deformation, hence experiencing geometrical nonlinearities. The problem of vibration localization in a rotor constituted by N coupled airfoils with plunge and pitch degrees of freedom subjected to flutter instability is considered.

Antonio Papangelo's picture

Does roughness enhance or destroy adhesion????

Recently, Dalvi and co-authors have shown detailed experimental data of adhesion of soft spheres with rough substrates with roughness measured down to almost the atomic scale, finding that the Persson and Tosatti theory gave satisfactory predictions of the apparent work of adhesion during loading, once the increase of the surface area due to roughness is correctly computed at extremely small scales.

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