844196 VU MOS-AK 1 Multi-Field Problems

winter semester 2020/2021 | Last update: 22.09.2020 Place course on memo list
844196
VU MOS-AK 1 Multi-Field Problems
VU 2
2,5
weekly
annually
German

On successful completion of this course students are able to conduct numerical stress analyses of multi-phase material like fluid-saturated porous media by using commercial finite element software and applying simple elasto-plastic models.

Many problems of engineering practice require considering both the effects of mechanical and thermal or chemical impact in stress analysis. Moreover, many materials used consist of several phases. In particular fully or partially water-saturated soil constitutes a multiphase problem frequently encountered in civil engineering practice. Using the finite element method and concurrently modeling the non-linear material behavior in a physically consistent way structures with complex geometry, complicated boundary conditions and material behavior may be modeled realistically. Moreover, complex and changing construction stages may be simulated numerically. However, for reliable application of modern and powerful finite element systems and for save interpretation of the numerical results a profound knowledge of its theoretical background is mandatory. Topics covered include “primary state”, “multi-phase material”, “sophisticated elasto-plastic models for soil”.

In the lectures the theoretical background for the analysis of primary state and multiphase problems in geotechnical practice using the finite element method is derived on the basis of lecture notes. Characteristics of porous multiphase materials are discussed and elasto-plastic models often applied for modeling such materials are covered. In the tutorials the above mentioned models are applied for solving practical problems. To this end, students work on assignments in small groups using a commercial finite element program. The results are documented and interpreted in a technical report. Topics of the assignments refer to stress analysis problems often encountered in geotechnical practice (e.g. drawdown of water table, simulation of excavation and pit lining, stability assessment of slops, ultimate load evaluation of footings, numerical analysis of tunnel driving etc.).

Lecture part: written exam
Tutorial part: assessment of the technical report and its presentation

Script; R. Stark: Festigkeitslehre - Aufgaben und Lösungen, Springer Verlag, 2006

 

see dates
Group 0
Date Time Location
Thu 2020-10-08
13.15 - 15.00 eLecture - online eLecture - online
Thu 2020-10-15
13.15 - 15.00 eLecture - online eLecture - online
Thu 2020-10-22
13.15 - 15.00 eLecture - online eLecture - online
Thu 2020-10-29
13.15 - 15.00 eLecture - online eLecture - online
Thu 2020-11-05
13.15 - 15.00 eLecture - online eLecture - online
Thu 2020-11-12
13.15 - 15.00 eLecture - online eLecture - online
Thu 2020-11-19
13.15 - 15.00 eLecture - online eLecture - online
Thu 2020-11-26
13.15 - 15.00 eLecture - online eLecture - online
Thu 2020-12-03
13.15 - 15.00 eLecture - online eLecture - online
Thu 2020-12-10
13.15 - 15.00 eLecture - online eLecture - online
Thu 2020-12-17
13.15 - 15.00 eLecture - online eLecture - online
Thu 2021-01-07
13.15 - 15.00 eLecture - online eLecture - online
Thu 2021-01-14
13.15 - 15.00 eLecture - online eLecture - online
Thu 2021-01-21
13.15 - 15.00 eLecture - online eLecture - online
Thu 2021-01-28
13.15 - 15.00 eLecture - online eLecture - online