research
About periodic BC for large mesh in ABAQUS
Hi all,
I'm using ABAQUS-2016 to run a parallel simulation, and I met a problem for assigning periodic BC in large mesh size. I want to make four nodes to be periodic with each other. Normally, I give the node pair in the equation option as:
*Equation
2
nset_1, 2, 1.
nset_2, 2, -1.
*Equation
2
nset_1, 2, 1.
nset_3, 2, -1.
*Equation
2
nset_2, 2, 1.
nset_4, 2, -1.
Some open problems in adhesion (of rough surfaces).
Please see attach.
Perfectly matched layers
Hello,
I am looking for a practical reference/example on how to implement the perfectly matched layers for mechanical problems in a Finite Element code. I want to model a plate where it is surrounded by the PML from all sides, like a piece of earth crust surrounded by the land. The sources which I see for PML, are mostly in the area of electromagnetics.
Your inputs are appreciated.
Setareh
Stress induced by diffusion, curvature, and reversible electrochemical reaction in bilayer lithium-ion battery electrode plates
In this paper, a new reaction-diffusion model, coupling the reversible electrochemical reaction, Lithium (Li) diffusion, and bending, is proposed to investigate the curvature, neutral axis movement, and stress in bilayer electrode. Bending curvature and stress, for the first time, are analytically and numerically investigated relate to both the diffusion and the reversible electrochemical reaction. The results reveal that the reversible electrochemical reaction retards the lithiation process, leading to the slowing down of diffusion process.
Photo-controlled patterned wrinkling of liquid crystalline polymer films on compliant substrates
Photo-chromic liquid crystalline polymer (LCP) is a type of smart materials which are sensitive to light. Here we harness its photo-mechanical response to flexibly control surface patterning, through modeling a film involving homeotropic nematic liquid crystals with director perpendicular to the polymer film attached on a compliant substrate. Theoretical and numerical analyses were conducted to explore the surface instability of such film/substrate systems under both uniform and non-uniform illuminations by ultraviolet (UV) light, respectively.
Morphology of voltage-triggered ordered wrinkles of a dielectric elastomer sheet
Wrinkles have attracted a lot of attention in the fields of material science and engineering applications. And dielectric elastomer is a potential smart material which has advantages including large deformation, light weight, high energy density, quick response and et al. We try to use DE to make a wrinkle structure which is quick response and reversible easily.
Dynamic compressive behaviour of cellular materials: a review of phenomenon, mechanism and modelling
Dynamic compressive behaviour of cellular materials is crucial to their applications in energy absorption, ballistic mitigation and blast/impact protection. The recent research progress in this subject has led to an improved understanding of the experimental, analytical and numerical observations. This review focuses on the aspects ofphenomena, mechanisms and modelling on the concerned subject. Attention is paid to linking macroscopic dynamic compressive behaviour with the subscale influential factors.
Lab-on-Skin: A Review of Flexible and Stretchable Electronics for Wearable Health Monitoring
Skin is the largest organ of the human body, and it offers a diagnostic interface rich with vital biological signals from the inner organs, blood vessels, muscles, and dermis/epidermis. Soft, flexible, and stretchable electronic devices provide a novel platform to interface with soft tissues for robotic feedback and control, regenerative medicine, and continuous health monitoring.
Time domain testing of viscoelastic material in Abaqus
Interconversion of material parameters.
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