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Some causes of instability #39

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shipengcheng1230 opened this issue Jul 21, 2019 · 4 comments

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shipengcheng1230 commented Jul 21, 2019 •

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The clamped θ will cause infinite dμ_dθ, hence infinite dv_dt:

https://github.com/shipengcheng1230/JuEQ.jl/blob/f377778afbc54dd6b4251d5b703617761f087808/src/assemble.jl#L56-L70

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shipengcheng1230 commented Dec 17, 2019 •

edited

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zero θ will cause alloc.dμ_dθ to be:

julia> 1 / 0 * 0
NaN

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shipengcheng1230 commented Mar 19, 2020

Need a time step cap for viscoelastic flow for large background driving strain rate.

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shipengcheng1230 commented May 4, 2020

The 3D inelastic Green's function is inherently unstable with all diagonal components for now.

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shipengcheng1230 commented Nov 5, 2020

Refer: https://github.com/shipengcheng1230/instable3dexample

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