O
Otto T. Bruhns
Researcher at Ruhr University Bochum
Publications - 109
Citations - 2186
Otto T. Bruhns is an academic researcher from Ruhr University Bochum. The author has contributed to research in topics: Hardening (metallurgy) & Finite element method. The author has an hindex of 28, co-authored 107 publications receiving 2030 citations.
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Self-consistent Eulerian rate type elasto-plasticity models based upon the logarithmic stress rate
TL;DR: In this article, the authors proposed new Eulerian rate type constitutive models for isotropic finite deformation elastoplasticity with elasticity, including the use of the newly discovered logarithmic stress rate and incorporation of a simple, natural explicit integrable-exactly rate type formulation of general hyperelasticity.
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Bounds to bifurcation stresses in solids with non-associated plastic flow law at finite strain
B. Raniecki,Otto T. Bruhns +1 more
TL;DR: In this paper, the authors generalized Hill's theory of bifurcation and stability in solids obeying normality to include a non-associated flow law, and a one-parameter family of linear comparison solids has been found that admits a potential and has the property that if uniqueness is certain for the comparison solid, then instability is precluded for the underlying elastic-plastic solid.
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On the viscous and strain rate dependent behavior of polycrystalline NiTi
C. Grabe,Otto T. Bruhns +1 more
TL;DR: In this article, the viscous and rate dependent behavior of binary, pseudoelastic NiTi is investigated, where the main focus is on the decoupling of thermal and viscous effects on the transformation stress level as the specimen material is subject to heating and cooling due to latent heat generation and absorption during phase transition.
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A thermodynamic finite-strain model for pseudoelastic shape memory alloys
Ch. Müller,Otto T. Bruhns +1 more
TL;DR: In this paper, a thermodynamic finite-strain model describing the pseudoelastic response of shape memory alloys is proposed based on a selfconsistent Eulerian theory of finite deformations using the logarithmic rate.
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A consistent finite elastoplasticity theory combining additive and multiplicative decomposition of the stretching and the deformation gradient
TL;DR: In this paper, a phenomenological finite deformation elastoplasticity theory is proposed by consistently combining the additive decomposition of the stretching D and the multiplicative deformation gradient F.