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

Submitted by chaofenglu on

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.

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

Submitted by Xuechuan Wang on

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

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.

Release of VEMLab v2.1

Submitted by Alejandro Orti… on

VEMLab: a MATLAB library for the virtual element method

 

Release of VEMLab v2.1

 

>>  From VEMLab v2.0.2 to VEMLab v2.1:

 

- Add customized wrench domain (for PolyMesher mesh generator only).

 

- Add customized plate with a hole domain (for PolyMesher mesh generator only).

 

- Add the following test: “square_plate_with_source2_poisson2d.m” in test folder.

 

- Add the following test: “plate_with_hole_linelast2d.m” in test folder.

 

No motor, no battery, no problem

Submitted by Osama R. Bilal on

New robot concept uses responsive materials to swim through water

When we think of robots, we normally think of motors and batteries and electronics, but engineers at Caltech and ETH Zurich have created a swimming robot that's powered by material deformation. That means it's made using materials that change shape in response to temperature swings, and that deformation pushes the device through water. 

Line and Point Defects in Nonlinear Anisotropic Solids

Submitted by arash_yavari on

In this paper, we present some analytical solutions for the stress fields of nonlinear anisotropic solids with distributed line and point defects.

£1 million awarded for 5 year project for virtual testing of components

Submitted by Simpleware on

Simpleware software user Dr. Llion Evans of Swansea University and the Culham Centre for Fusion Energy has received £1 million in funding for a five-year project into virtual testing of new components. Funded by the Engineering and Physical Sciences Research Council (EPSRC), the research looks at how image-based simulation using 3D X-ray imaging can virtually evaluate manufactured components.

Learn more about this project