Weak Form in Voigt Notation

Weak form in Voigt notation

\int_{B} δε \dots ℂ \dots εdV = \int_{B} \underset{solid forces}{\underset{⏟}{{δu}^{T} bdV}} + \int_{\partial B} \underset{surface area forces}{\underset{⏟}{{δu}^{T} \cdot t_{0} dA}}

C	Stiffness matrix
δε	Variation of the strain state
B	Integrated area
ε	Strain
U	Deformation

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