Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 6 of 6 for “"Yield functions"”.
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Development of rate-dependent thermoplastic constitutive models for numerical analysis of ceramics at high-temperature
… and implements a shape evolution of the BP yield function, calibrated to simulate the forming of green bodies and their pre-sintering phase. Three algorithms are developed for the integration of constitutive equations when pathological yield functions are involved. The algorithms are coded …
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Experimental determination of the yield locus of anisotropic metal sheets using digital image correlation
The focus of this research was to determine the yielding and work hardening behaviour of two anisotropic steel sheets (DP600 and HSLA). Uniaxial tension and compression tests were performed in the rolling and transverse directions and at 45 degrees to the rolling direction for each sheet. …
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Dislocations and Green's functions in prestressed solids
… Part, infinite-body two-dimensional Green's functions are derived for the incremental deformation of an incompressible, anisotropic, prestressed body. These functions, given by Bigoni and Capuani, show the response of an infinite body to a concentrated force. The effect of prestress on …
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Theoretical and numerical aspects of problems in finite-strain plasticity
… conventional formulations, which make use of yield functions, and those formulated in terms of a dissipation function. The role of the principle of maximum plastic work is also made precise. Attention is focussed on application of the theory to finite-strain plasticity. Quasi-static …
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Optimising the trade-offs between food production, biodiversity and ecosystem services in the Neotropics
… within the farmed landscape by keeping yields artificially low. Alternatively, land sparing links high yield agriculture with increased habitat protection or restoration. Previous studies have examined the relative benefits of the two strategies in different agricultural systems and …
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Long-term variation in cosmic-ray modulation
… to the addition of the third neutron monitor yield function. Despit that, these authors argue that these new calculated modulation potential remain consistent with the old values within the uncertainties. Herbst et al. (2010) have shown that the calculation of modulatio potentials do not only …