Информация за научни конференции и семинари, посветени на математичното моделиране и компютърната симулация

( ноември, 2013)

Gene Golub SIAM Summer School 2014

Simulation, Optimization, and Identification in Solid Mechanics G2S3-Logo

4 August - 15 August 2014, Linz, Austria

This summer school will foster advanced knowledge for the participating graduate students in several areas related to simulated materials in solid mechanics. Within this broad field the summer school will concentrate on four key issues, namely

Identification of material parameters from measurements,

Material- and topology optimization,

Optimization subject to variational inequalities,

Adaptive discretization.

Organizers

The lectures will be given by

Roland Herzog, TU Chemnitz,

Esther Klann, JKU Linz,

Michael Stingl, FAU Erlangen-Nürnberg,

Winnifried Wollner, University of Hamburg.

Courses

Goals

The bulk of the summer school consists of the four topics:

Identification of material parameters from measurements (Identification and Inverse Problems, IIP),

Material- and topology optimization (Material optimization/Topology optimization, MO/TO),

Optimization subject to variational inequalities (Mathematical Programming with Complementarity Constraints, MPCC),

Adaptive discretization (Adaptive Finite Elements, AFEM).

These topics complement each other in a natural way. In particular, topics 1 and 2, which will be covered during the first week, are connected by the following rationale

Any model needs identified parameters for reliable simulations and optimization of structures based upon such models.

Material optimization is a natural step beyond simulation.

Both, identification and optimization, can be written as minimization problems subject to the governing material model as a constraint.

In both disciplines regularization plays a crucial role. While in MO regularization is often a direct consequence of design requirements, a proper choice which would not alter the original material parameters is much more involved in identification.

Despite this similarity, both problems have a different goal and need some special arguments in their analysis.

To highlight these connections, as well as to show the differences, both topics will be covered during the first week.

During the second week, the topics 3 and 4 will be covered, as they are both very relevant extensions of the theory covered during the first week

In many practical applications, purely linear elastic material models may fail to predict the true deformation behavior of a loaded body. In the worst case this means that structure or component which is optimized on the basis of a purely linear elastic model may even break.

Hence, the incorporation of nonlinear material models, e.g., elastoplasticity, is mandatory to predict and optimize the behavior of materials outside of the linear elastic regime.

Accurate and efficient solution of the discretized material models requires adaptivity and error estimation.

The Resource Modeling Association's international conference will return to Europe in 2014. The venue will be Vilnius, the historic capital of Lithuania. This bustling metropolis of 600,000 people is situated close to the geographical centre of Europe and is the political, economic and cultural centre of the nation. Replete with spectacular architecture from the Gothic, Renaissance and Byzantine eras, the city’s World Heritage listed Old Town is defined by cobbled streetscapes dating back to the 14th century.

The conference will be held from 8 – 11 July, 2014, jointly hosted by the the Institute of Ecology of the Lithuanian Nature Research Centre http://www.gamtostyrimai.lt/en/ (NRC) and Vilnius University's Faculty of Natural Sciences http://www.gf.vu.lt/en (VU). NRC is organizing the event on behalf of the RMA in cooperation with the Society for Industrial and Applied Mathematics (SIAM) and the SIAM Activity Group on Dynamical Systems (SIAG/DS). The venue is the original VU campus which was established in 1579 in the Old Town of the city.

So make a date in your calendar to come Vilnius in the summer of 2014 to share an unforgettable experience with resource modelling colleagues from around the globe.