Training schools

Trainers: Riccardo La Magna, Philipp Längst, Gregory Quinn
with special support of Julian Lienhard, Daniel Piker and Anna Bauer

HafenCity University Hamburg, Germany – 22-24 September 2017

The workshop will explore and compare 3 different software and simulation approaches in form-finding and analyzing bending-active structures.

In the first half of the Masterclass 3 different numerical approaches for form-finding large deformations in bending-active systems are introduced. For each approach we will give a brief theoretical background to the method and introduce its functionality through a variety of short tutorials. In the second half of the Masterclass we will compare the approaches in the format of a ‘round robin exercise’ to highlight and evaluate similarities, differences, strengths and weaknesses of the individual methods.

The three methods introduced in the Masterclass are

  • Mesh based – FEM Sofistik
  • Nurbs based – IGA Carat++
  • Vector based – DR Kangaroo

All 3 simulation methods use Rhino Grasshopper as an interface. This will facilitate the generating and comparing of input and output geometries for the form-finding process.

Training school EUROMEM
From uncertainties to partial safety factors calibration: application to tensile membrane structures – Discover the birth of a Eurocode

Université de Nantes, France – 29/09-01/10/2015

Textile structures are becoming increasingly important in the field of construction, especially for types of construction that are innovative, often sustainable, but also sometimes temporary.
Several European countries have developed design methods and rules that are different. COST Action TU1303 aims to improve the efficiency and sustainability of the future membrane structures. Among its many objectives, European standardization is a major challenge, requiring the potential harmonization and dissemination of complex calculation methods that are required to simulate the specific behavior of textile structures. Working groups WG4: MATERIALS AND ANALYSIS and WG5: FROM MATERIAL TO STRUCTURE AND LIMIT STATES: CODES AND STANDARDIZATION of TU1303 are focusing on this goal. These developments support the activities of CEN TC250 WG5, a European working group with the objective of writing a Eurocode dedicated to membrane structures (expected in 2024). The first milestone is set for mid-2015, with the completion of a Scientific and Policy Report (SAP Report) presenting the state of the art across Europe and proposing the principles for the initial harmonized rules.
The early Eurocodes were essentially based on common practice. The rules developed in the emerging Eurocodes are expected to be derived from more formal reliability analysis-based methods, using statistics describing the materials and loading, and analysis tools focusing on numerical simulation.
Structural reliability analysis is a specialized technique that is essential for Engineers designing membrane structures to the Eurocodes, and for those involved in the development of Standards (including the Eurocode) and research. On completing the Summer School, participants will have a good understanding how to calculate the structural reliability of membrane structures, and be aware of the issues associated with the drafting of a Eurocode for membrane structures.
– Risk analysis and methods of reliability calculation
– Uncertainty modeling (materials, loads).
– Reliability analysis of membrane and pneumatic structures
– Calibration of partial factors.

Draft Program

Tuesday 29th September 2015

13.30–14.00    Welcome
14.00-15.30    Introduction
14.00-14.30    Overview of the framework (Marijke Mollaert)
14.30-15.30    Philosophy of partial safety factors calibration (Jean-Armand Calgaro)
15.30-16.00     Pause
16.00-18.00     Basis of reliability analysis
16.00-17.00    Risk analysis (Franck Schoefs)
17.00-18.00    Reliability computation (Maurice Lemaire)
19.00          Dinner

Wednesday 30th September 2015

08.00-09.30     Calibration
08.00-09.30     Calibration of partial safety factors (Franck Schoefs)
09.30-10.00     Pause
10.00-12.00     Key design rules for tensile and inflatable structures
10.00-11.00     Tensile membranes (Peter Gosling)
11.00-12.00     Inflatable structures (Jean-Christophe Thomas)
12.00-14.00      Lunch
14.00-15.00       Involved uncertainties
Materials (Peter Gosling)
Loading (wind, snow …) (Jimmy Coliers, Alexis …)
Models (Jean-Christophe Thomas)
15.00 -17.00     Reliability of tensile membranes and inflatable structures
15.00-16.00    Tensile membranes (Peter Gosling)
16.00-17.00    Inflatable structures (Jean-Christophe Thomas)
17.00-17.30     Pause
17.30-22.00       Round table
17.30-19.00      COST Action TU1303 WG4 and WG5 Meeting: Round table for research actions
20.00         Dinner

Thursday 1st October 2015

08.30-10.30     Software tools
08.30-10.30     PHIMECA and others (to be confirmed)
10.30-11.00        Pause
11.00-14.00     Conclusion
11.00-12.00      Further works, conclusion of the training school