WP4: Modelling and validation

Through modelling, the data provided in WP2 and WP3 will be optimised, to develop the best solutions for the new eco-innovative materials for building envelopes and partitions. Mechanical, hygrothermal (heat and moisture transport) and acoustic properties of materials and elements will be tested, to predict and confirm a safe and energy-efficient performance of the new products in different climate conditions. The performance optimization of the building envelope as well as the partitions shall prove the concept of their eco-innovative properties.

Hygrothermal parameter study
Simulations will be based on dynamic modelling of a number of different building materials developed in WP2, in relation to their heat transfer behaviour and vapour/liquid transport characteristics applying PHYSIBEL and WUFI software, respectively. Thermal performance of components developed in WP3 will be done applying BISCO and TRISCO software to study the 2D and 3D steady-state heat transfer profiles, respectively. CAPSOL software will be used to perform the multi-zone transient heat transfer simulations while WUFI software will be applied to characterize heat and moisture transport in multi-layer components exposed to natural weather conditions.

Structural modelling
Structural modelling by means of FEM-calculations will be applied to analyse the mechanical performance of the new envelope and partition elements under different load scenarios. ABAQUS and DIANA software will be used to evaluate stresses, deformations, cracking, resistance, service life etc. The improved structural models will provide details about the façade elements behaviour and their interactions with the existing load bearing structure under different load conditions. Structural modelling will show the geometric design requirements for the façade elements and limitations concerning the thickness of the single components. It will also provide a base for the design of new connector systems and other connection details.

Acoustic analysis
The modelling will be applied to analyse and predict the acoustic performance and noise protection requirements of new building components, used in different building types with several different typical construction types. The calculations will be based on the European Standards series EN 12354. BASTIAN software will be used to evaluate and assess the airborne and impact sound insulation between rooms.

The numerical study on optimum configuration of the components used for building envelopes and partitions with regard to their mechanical, hygrothermal and acoustic performance will determine the output base for WP5.