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Formulation of continuous material constraints #37

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yuki-koyama opened this issue Apr 10, 2021 · 0 comments
Open

Formulation of continuous material constraints #37

yuki-koyama opened this issue Apr 10, 2021 · 0 comments

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@yuki-koyama
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In [Bender+14], the authors formulated as

E(x) = C(x),

where E is the elastic energy and C is the constraint function. The current formulation follows this idea.

However, in the viewpoint of compliant mechanics (XPBD) [Macklin+16], we should formulate it as

E(x) = C(x)^T a^{-1} C(x),

where a is the compliant (inverse stiffness) parameter. With this, we can accurately simulate continuous material behaviors.

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