Hi,

In a novel design of lithium-ion batteries, hollow electrode particles coated with stiff shells are used to mitigate mechanical and chemical degradation.  In particular, silicon anodes of such core-shell nanostructures have been cycled thousands of times with little capacity fading.  To reduce weight and to facilitate lithium diffusion, the shell should be thin.  However, to avert fracture and debonding from the core, the shell must be sufficiently thick.

Hi Everybody, 

I'm using Mohr-Coulomb with Cohesion Hardening  in Abaqus and I'm wondering how can I postprocess the state of Cohesion in the field?



Tanks ahead,

-Ali

 

Dear all,

Could anyone help to give me some advice on how to implement a kind of nonlinear interaction relevant to relative velocity in ABAQUS? The interaction force has a quadratic function with the relative velocity between two nodes. Thanks.

Hi all,

How to check normals for 3D elements in abaqus 6.11

when all the inclusions with similar shape are embeded into the matrix, the 
 Mori_Tanaka effective Stiffiness/Compliance Tensor can be , respectively, given by

L ={∑c_r(L₀^*+L_r)^-1}^-1-L₀^*

M={∑c_r(M₀^*+M_r)^-1}^-1-M₀^* 

where,

Can anyone show me  the
 positive definiteness of the Stress Polarization Tensor  P_ijkl, i.e.,

τ_ij^* P_ijkl τ_kl^*≥o,

and further, 

τ_ij^* M_ijkl τ_kl^*≥τ_ij^* P_ijkl τ_kl^*,

Dear
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Dear colleagues,

I kindly ask for advice on the following problem:

I simulate the uniaxial compression of a heterogeneous cylinder representing bone. Thus, it is not the visible solid exterior rim of the bone, but represents a porous structure within the bone, so-called trabecular bone, see the figure underneath.

The simulation is done in ABAQUS. The sample contains 164175 elements of type C3D4. The heterogeneous, porous structure makes it impossible to use axisymmmetric elements. The constitutive behavior is ELASTIC.