For the design of widespan, light-weight structures subject to wind ow, the dynamic structural behaviour can be decisive. The transient effects caused by wind ow can be evaluated using different approaches with significant difference in level of complexity and computational cost. The high-end modelling is represented by a fully coupled approach, considering all effects of the fluid-structure interaction. For preliminary investigations and calibration of damping devices this is very often too expensive. On the other hand the quasi-static approach that has low complexity and low computational costs most of the time lead to underestimation of dynamic response. Reason for that is that despite research done in the field of tensile membrane structures there are still a lot of unknowns. An alternative approach is the assessment of the dynamic response by using one-sided fluid-structure coupling disregarding the effect of changed ow fields on the pressure distribution. Within this thesis, this concept should be applied to tensile structures with surrounding wind ow. To judge about the efficiency and applicability of this method for this specific type of structures, the following steps have to be performed: 1. Modelling in detail the numerical model of two different widespan umbrella structures. 2. Computation of the final shape of the prestressed membranes and cables by form finding procedures, considering realistic prestress scenarios. 3. Computation of eigen-frequencies and mode shapes of the prototype umbrellas to determine the representative dynamic properties and calibrate the structural models against realistic dynamic parameters. 4. Create spatially and time-wise varying pressure distributions on the structural surface based on the data from wind tunnel experiments. 5. Perform static analysis to determine the quasi-static results. 6. Perform geometrically nonlinear dynamic analyses considering the spatially and time-wise varying loads. . Evaluate the results of the dynamic simulations. 8. Derive dynamic amplification factors for the umbrella structures and observe the dependency of this value with respect to different factors.     «

For the design of widespan, light-weight structures subject to wind ow, the dynamic structural behaviour can be decisive. The transient effects caused by wind ow can be evaluated using different approaches with significant difference in level of complexity and computational cost. The high-end modelling is represented by a fully coupled approach, considering all effects of the fluid-structure interaction. For preliminary investigations and calibration of damping devices this is very often too exp...     »