Nonlinear solution methods for infinitesimal perfect plasticity

Nonlinear solution methods for infinitesimal perfect plasticity

Solution Methods for Nonlinear Models¤

Economic models are used for many purposes, including forecasting and simulation. Economic models are generally nonlinear. Even simple macroeconomic models, where all the stochastic equations in the system may be linear in logarithms, need to be completed by accounting identities that are linear in levels. As a consequence, although a model may be estimated using linear techniques, forecasts wi...

Regularity up to the Boundary for Nonlinear Elliptic Systems Arising in Time-Incremental Infinitesimal Elasto-plasticity

In this note we investigate the question of higher regularity up to the boundary for quasilinear elliptic systems which origin from the time-discretization of models from infinitesimal elasto-plasticity. Our main focus lies on an elasto-plastic Cosserat model. More specifically we show that the time discretization renders H-regularity of the displacement and H-regularity for the symmetric plast...

islanding detection methods for microgrids

امروزه استفاده از منابع انرژی پراکنده کاربرد وسیعی یافته است . اگر چه این منابع بسیاری از مشکلات شبکه را حل می کنند اما زیاد شدن آنها مسائل فراوانی برای سیستم قدرت به همراه دارد . استفاده از میکروشبکه راه حلی است که علاوه بر استفاده از مزایای منابع انرژی پراکنده برخی از مشکلات ایجاد شده توسط آنها را نیز منتفی می کند . همچنین میکروشبکه ها کیفیت برق و قابلیت اطمینان تامین انرژی مشترکان را افزایش ...

Variational methods for the numerical solution of nonlinear elliptic problems

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