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Ramathasan Thevamaran's picture

Block copolymer additives for toughening 3D printable epoxy resin

Dear Colleagues,

Please see our recent article on toughening 3D printable resins with block copolymer additives:

Abstract

Ramathasan Thevamaran's picture

Superior Energy Dissipation by Ultrathin Semicrystalline Polymer Films Under Supersonic Microprojectile Impacts

Distinct deformation mechanisms that emerge in nanoscale enable the nanostructured materials to exhibit outstanding specific mechanical properties. Here, we present superior microstructure- and strain-rate-dependent specific penetration energy (up to ∼3.8 MJ/kg) in semicrystalline poly(vinylidene fluoride-co-trifluoroethylene) (P(VDF-TrFE)) thin films subjected to high-velocity (100 m/s to 1 km/s) microprojectile (diameter: 9.2 μm) impacts.

mshakiba's picture

Call for Abstract Submission to SES2020 Symposium on Damage and Thermo-Chemo-Mechanical Coupling in Polymers

Dear Colleagues,

We invite you to submit your relevant work to a mini-symposium on “Damage And Thermo-Chemo-Mechanical Coupling In Polymers” (full description below) at the 2020 Society of Engineering Science. SES 2020 will be held at the University of Minnesota in Minneapolis, September 28-30th.

We also like to announce that Prof. Ellen Arruda will give the keynote of this symposium. 

Ying Li's picture

Journal Club for March 2020: Molecular Simulation-Guided and Physics-Informed Multiscale Modeling of Polymer Viscoelasticity

Journal Club for March 2020: Molecular Simulation-Guided and Physics-Informed Multiscale Modeling of Polymer Viscoelasticity

Ying Li, Department of Mechanical Engineering, University of Connecticut

1.       Introduction

Meredith N. Silberstein's picture

Call for Abstract Submission to SES2020 Symposium on Damage and Thermo-Chemo-Mechanical Coupling in Polymers

 

Dear Colleagues,

We invite you to submit your relevant work to a mini-symposium on “Damage And Thermo-Chemo-Mechanical Coupling In Polymers” (full description below) at the 2020 Society of Engineering Science. SES 2020 will be held at the University of Minnesota in Minneapolis, September 28-30th.

The abstract submission deadline is March 17th, 2020. You can find us under Track 5. https://ccaps.umn.edu/SES/abstract-submission

Ying Li's picture

Multiple PhD Open Positions in Polymer Modeling and Machine Learning at University of Connecticut

PhD Open Positions

PhD positions with financial support in the form of research assistant/teaching assistant are available in the Department of Mechanical Engineering, University of Connecticut (UConn).

mailtoswaroop's picture

Postdoctoral Research position in Polymer composite materials at NTU, Singapore

Please see the attached job description. The position will be for 1 year initially and can be extended based on the performance and funding availability.

Phd / PostDoc position Additive Manufacturing - Polymers

A postdoc or a PhD position are available immediately at the Laboratoire de Mecanique des Solides (Solid Mechanics) at https://www.polytechnique.edu/The project is focused on understanding the impact of UV polymerization on the constitutive behaviour of printed polymer composites. The position is part of an ongoing collaboration with a german academic partner.

Wenjie Xia's picture

PhD positions in multiscale modeling of materials at North Dakota State University

One or two fully funded PhD positisons (tuition plus reasearch or teaching assistantships) are immediately available in the Computational Dynamics and Materials Laboratory at North Dakota State University (NDSU) during the academic year 2018~2019.

Yunwei Mao's picture

USNC/TAM 2018 mini-symposium 362: Failure and Damage in Soft Materials: From Instabilies to Cracking

Dear Colleagues,

We would like to invite you to submit an abstract to our symposium titled “362 Failure and Damage in Soft Materials: From Instabilies to Cracking” as part of the 18th U.S. National Congress for Theoretical and Applied Mechanics (Northwestern University in Chicago, IL, June 4-9, 2018).

Post-Doc Position: Colloids in polymer systems: Numerical studies and simulations

Post-Doc Position: Colloids in polymer systems: Numerical studies and simulations

 

The Material and Process Simulation group at the University of Bayreuth is offering a

1 Post-Doc Position TV-L E13 (m/f)

Colloids in polymer systems: Numerical studies and simulations

 

Post-Doc Position: Colloids in polymer systems: Numerical studies and simulations

Post-Doc Position: Colloids in polymer systems: Numerical studies and simulations

 

The Material and Process Simulation group at the University of Bayreuth is offering a

1 Post-Doc Position TV-L E13 (m/f)

Colloids in polymer systems: Numerical studies and simulations

 

Polymer Packaging Modeling Engineer at Procter & Gamble

Description
The selected individual will lead the development, initial application and deployment of new modeling capability in the area of thermoplastic packages. The initial focus is on developing best in class material models across a range of polymers. This material modeling capability will be leveraged globally for a broad range of packaging model applications (blow molding, parison / preform optimization, empty and full bottle interaction with packing lines, etc.)

Moisture absorption in adhesive

Dear all, 

Need Help.. 

I'm doing research in moisture absorption in adhesive bonding. I'm wondering how to differentiate and characterize the Fickian Diffusion and Non-Fickian Diffusion during absorption and desorption moisture.

 

Thank You 

 

Zhigang Suo's picture

Freely jointed chain

A single strand of polymer is a chain of a large number of monomers.  The monomers are joined by covalent bonds, and two bonded monomers may rotate relative to each other.  At a finite temperature, the polymer rapidly changes from one configuration to another.  When the two ends of the polymer are pulled by a force, the distance between the two ends changes.  The polymer is known as an entropic spring.

Circular membrane tension calculation

Choose a channel featured in the header of iMechanica: 

Hi, I am a new PhD student working on the vibration behavior of a thin polymer film. Specifically the film is an elastomer VHB 4910. The question that I have specifically is that initially the film is 500 microns thick. Upon the application of prestress, the film is stretched (clamped) and the film thickness decreases to 20 microns. Assuming that the thickness is uniform, how can I calculate the tension in the membrane? 

Thanks for any suggestions that you can provide, and happy new year!

Look for free-code UMAT on polymer viscoplasticity model of M.C. Boyce

I just attended USNCCM11, and heard from a presentation that there should be free code for polymer viscoplasticity model from M.C. Boyce.Unfortunately, I googled from half an hour and dowloaded nothing this afternoon. Can anybody give more info ?

Thanks in advance !

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