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A question regarding applying the boundary conditions in thin film peeling

Submitted by Gouravaraju on Tue, 06/05/2018 - 01:26

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thin films

adhesion; contact mechanics; bioinspired adhesion; nanolayers; microlayers

Hello all,

As is my understanding that, in analytical models such as "Kendall Peeling Model", when they talk about peeling angle it is the angle at which the peeling force is applied (or am I wrong?). But when it comes to FE analysis, if we displace one end of the film at an angle by applying displacement boundary conditions on that end, the resulting forces are not along the same direction of the displacements. So, I am confused as to how to compare the FE results with that of the analytical models.

Thank you.

Fully funded PhD position in Swansea University, UK

Submitted by mokarram76 on Thu, 05/31/2018 - 13:42

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PhD Scholarship in the field of: Mechanical Engineering/Computational Engineering/Polymer Sciences/Material Engineering/Material Sciences. It is a fully funded PhD scholarship for UK/EU citizens only.

http://www.swansea.ac.uk/postgraduate/scholarships/research/engineering…

Postdoctoral Position Available at Khalifa University: Composite Manufacturing and Multiscale Modeling

Submitted by kamrankhan026 on Wed, 05/30/2018 - 10:10

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A Postdoctoral Research Fellow position is available immediately in the aerospace department at the Khalifa University of Science and Technology in Abu Dhabi in United Arab Emirates. The research project focuses on Composite materials and manufacturing, Autoclave/out of autoclave techniques, LCM, constitutive and multi-scale computational modeling of the viscoelastic and other inelastic behavior of composites.

Postdoctoral Position Available at Khalifa University: Composite Manufacturing and Multiscale Modeling

Submitted by kamrankhan026 on Wed, 05/30/2018 - 10:10

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Modified multiplicative decomposition model for growth: Beyond the initial stress-free state

Submitted by chaofenglu on Tue, 05/29/2018 - 00:12

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growth

Volume growth model

The multiplicative decomposition model is widely employed for predicting residual stresses and morphologies of biological tissues due to growth. However, it relies on the assumption that the tissue is initially in a stress-free state, which conflicts with the observations that any growth state of a biological tissue is under a significant level of residual stresses that helps to maintain its ideal mechanical conditions.

Bloch wave framework for structures with nonlocal interactions: Application to the design of origami acoustic metamaterials

Submitted by Phanish Suryan… on Mon, 05/28/2018 - 15:24

acoustic metamaterials

Abstract

Pattern Transitions in a Soft Cylindrical Shell

Submitted by Fan Xu on Fri, 05/25/2018 - 17:17

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Buckling and Post buckling

bifurcation

pattern formation

Yifan Yang, Hui-Hui Dai, Fan Xu, and Michel Potier-Ferry

Phys. Rev. Lett., https://doi.org/10.1103/PhysRevLett.120.215503

Bifurcation & Chaos in Nonlinear Structural Dynamics: Novel & Highly Efficient Optimal-Feedback Accelerated Picard Iteration Algorithms

Submitted by Xuechuan Wang on Thu, 05/24/2018 - 19:24

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Variational method

Picard iteration method

Collocation method

structural vibrations

nonlinear dynamics

A new class of algorithms for solving nonlinear structural dynamical problems are derived in the present paper, as being based on optimal-feedback-accelerated Picard iteration, wherein the solution vectors for the displacements and velocities at any time in a finitely large time interval are corrected by a weighted (with a matrix) integral of the error. We present 3 approximations to solve the Euler-Lagrange equations for the optimal weighting functions; thus we present 3 algorithms denoted as Optimal-Feedback-Accelerated Picard Iteration (OFAPI) algorithms-1, 2, 3.

Unraveling the molecular mechanisms of thermo-responsive properties of silk-elastin-like proteins by integrating multiscale modeling and experiment

Submitted by Jingjie Yeo on Wed, 05/23/2018 - 13:55

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molecular dynamics

Coarse-grained molecular dynamics

Experimental analysis

hydrogels

silk

silk-elastin-like proteins

stimuli-responsive

Multiscale Simulations

http://dx.doi.org/10.1039/C8TB00819A

Fresh in 2018 Journal of Materials Chemistry B HOT Papers! We present integrative experimental and computational understanding of the thermal response in adaptive hydrogels tailor-made from silk-elastin-like proteins that are tunable and responsive to multiple simultaneous external stimuli.