Add vector_newton: coupled Newton for mixed scalar/tensor local systems - #17

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petlenz wants to merge 16 commits into

feature/drucker-pragerfrom

feature/vector-solver

Commits on Jul 27, 2026

backward_euler: make solve() a general scalar Newton; add opt-in solve_nonnegative (Refs #13)
petlenz
committed
8e84f13
Add Mandel unknown_layout: tensor<->flat serialization for mixed scalar/tensor solves (Refs #15)
petlenz
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7a1c7be

Commits on Jul 29, 2026

vector_newton: validate unknown names up front; drop redundant re-evaluation
petlenz
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ad402dc
vector_newton: fix silent wrong answer when compute is bound to a Jacobian block
petlenz
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f12213c
vector_newton: zero_blocks means identically zero, not an approximation
petlenz
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3b04cb6
tests: exercise the Newton loop for a mixed scalar/tensor system
petlenz
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4458748
vector_newton: consistent tangent via the implicit function theorem (Refs #19)
petlenz
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ac8575b
Replace hand-rolled index loops with tmech and Eigen expressions
petlenz
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41d217f

Commits on Jul 31, 2026

umat: Abaqus/Standard interface for the property-graph materials
petlenz
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c9ea9ed

Commits on Aug 1, 2026

Commits on Aug 10, 2026

umat: material constants come from PROPS, not from the builder
petlenz
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8d13f4b