Bistable Auxetic Mechanical Metamaterials
A. Rafsanjani and D. Pasini, Bistable Auxetic Mechanical Metamaterials Inspired by Ancient Geometric Motifs. Extreme Mechanics Letters 9, 291-296 (2016).
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Journal Club for October 2016: Roughness evolution of biomaterial surfaces
As an example, here we discuss implant-associated infection from the mechanics point of view on bacteria adhesion affected by the biomaterial surface roughness:
1. Implant-associated infection, a leading cause of failure in many biomedical devices, is caused by adhesion of bacteria to the surface of biomaterials. Implant-associated infection is difficult to treat, for example, joint replacement infections may occur deep around the artificial implants.
Elastic-plastic analysis by 4 nodes isoparametric finite element. Theory Mises
The relationship between the strains and stresses will be considered based on the premise that for every increment of load deformation occurs, consisting of two parts - the elastic and plastic
The program of calculation by finite element method. Basis of its program described in the work [Siratori, T. Miesi, and Kh. Matsushita,Numerical Mechanics of Fracture], which has implemented the theory of plastic flow and deformation theory. The plastic problem is solved by the incremental method of loading, with each increment of load shifted one element to the plastic zone.
Fatigue crack propagation
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Hi, I'm trying to perform a supposedly-simple experiment on fatigue crack propagation of UHMWPE. I use a compact-tension specimen on a servopulser hidraulic testing machine. I will try to do the experiment on a fix Pmax with a varied force ratio (R) from 0.1 to 0.5. I'm having trouble in deciding the maximum force Pmax. How does one decide the amount of force applied for FCP testing? Calculation steps and so on.
Time-dependent deformation behavior of polyvinylidene fluoride binder: Implications on the mechanics of composite electrodes
Time-dependent deformation behavior of polyvinylidene fluoride binder: Implications on the mechanics of composite electrodes (http://www.sciencedirect.com/science/article/pii/S0378775316312721)
Arnuparp Santimetaneedol, Rajasekhar Tripuraneni, Shawn A. Chester, Siva P.V. Nadimpalli
Compatible-Strain Mixed Finite Element Methods for 2D Compressible Nonlinear Elasticity
In this paper, using the Hilbert complexes of nonlinear elasticity, the approximation theory for Hilbert complexes, and the finite element exterior calculus, we introduce a new class of mixed finite element methods for 2D nonlinear elasticity -- compatible-strain mixed finite element methods (CSFEM). We consider a Hu-Washizu-type mixed formulation and choose the displacement, the displacement gradient, and the first Piola-Kirchhoff stress tensor as independent unknowns. We use the underlying spaces of the Hilbert complexes as the solution and test spaces.
How to know the element number within an hetval subroutine
Hi everybody
I'm a new user of abaqus and I'm trying to describe the heat generation in a changing phase thermoset polymer using abaqus user subroutine HETVAL. I need for my computations the current element number (in such a way that I can find the adjacent elements in the connectivity matrix).
Does anyone have any suggestion?
Thank you
Eigenvalue buckling analysis of cracked functionally graded cylindrical shells in the framework of the extended finite element method
Hi everybody
My new paper on the buckling behavior of cracked FGM shells has been published in the Composite Structures.
I would be very happy to answer any further question.
I attached the pdf file of the paper to this blog.
Evaporation limited radial capillary penetration in porous media
Liu, M., Wu, J., Gan, Y., Hanaor, D. A., & Chen, C. Q. (2016). Evaporation limited radial capillary penetration in porous media. Langmuir, 32(38), 9899-9904.
Simulation of moving wheel on the rail?
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Hi Guys,