Category Archives: videos

Presentation at the Blender conference 2015

First we thought we would attend the Blender conference only as audience, but then got invited at short notice to present our research on our simulation tool to the community . The conference was streamed live over the internet, twitter messages were cast on the theater walls in minute cycles. We admit this was all quite exciting for us. The feedback and the interest after the talk was very encouraging. Now our talk is stored on youtube.

Quick fun

This model was import as an IFC file into Blender using the ifcopenshell add-on.
The complete model with 1276 elements, was imported into Blender 2.73 successfully. Each element was represented as an individual mesh object. The elements had all triangulated faces which could be in most cases fixed to quad faces for better handling.
By attributing a physically active state and automatic calculation of the concrete masses. The model could then be used in a rough physical simulation. No constraints where applied. The process from importing to the final simulation took ca 5 minutes. The elevator shaft however needed to be taken off because of overlapping geometries.

The simulation does not have any scientific significance, however it is important to point at this procedure, because it illustrates that an external model can indeed directly be used for simulations in Blender.

Simulation of the first test case

This video shows the first „Backbone“-configuration test case: A
residential high-rise building with 17 upper floors and 3 under-
ground floors. The dimensions of the building is 23.5 x 23.5 m
with a height of 62.1 m over ground. The main supporting
structure of the building is a reinforced concrete framework that
consists of peripheral facade columns and a central shear core
stabilizing the structure against horizontal forces.

The simulation scenario is an explosion under ground which
eliminates the 3 lowest columns at one building corner.

All the constraints between the rigid bodies were placed by the
“Bullet Constraints builder” script v1.51.
The script automatically calculates breaking thresholds as well
as element mass.

The first 5 Sequences in this video show that the building stands
upright without collapsing, while changing the pillar joints from
rigid to hinges and different concrete strengths: C60, C30, C20.
The reason for the resistance might lay in the massive
Girders between ground floor and underground floor.

Only if the core and slabs are changed to C10 concrete the building collapses.

The high-rise building concept is designed and provided by Schüßler-Plan GmbH.