S3: Experimental Structures » Uncategorized

Shell/Geometry

sviatlanamatushko — Mon, 24 Mar 2014 17:46:30 +0000

ORIGINAL CONFIGURATION

Our base structure was arches joined in a zip-way. We created a surface between and got a vault structure in case of better understanding of structural behavior.

SELF LOAD-FIXED SUPPORTS

SELF LOAD-PINNED SUPPORTS

1 APEX PT LOAD-FIXED SUPPORTS

1 CENTRAL PT LOAD-FIXED SUPPORTS

1 APEX PT LOAD-PINNED SUPPORTS

1 CENTRAL PT LOAD-PINNED SUPPORT

Displacement:

Looking at the displacement grafs we can see where is structure’s deformation affected by load. In the diagrams we can understand that

the deformations of the structure are not only in the place where the load is placed, but also in places of arches tension according to

supports.

Stress Vector:

The stress vector lines show the movement of forces between the load and supports. In the diagrams we can see that the stress lines

gradually spreaded from the load to sopports and the most tension achieve closer to supports.

Utilization:

It shows the performance of the material. Looking at the diagrams we can see that material work in the placement of load and closer to

supports.

CHANGED SUPPORTS

SELF SUPPORTED-FIXED SUPPORTS

SELF SUPPORTED-PINNED SUPPORTS

Understanding of structural behavior by changing of supports place:

In diagrams you can see that moving the supports in different axes the most tension of structure is always closer to the base points of supports.

FOLDABLE STAIR.

marialaura — Sun, 23 Mar 2014 20:30:37 +0000

The first idea was to create a staircase which we could use as a cantilever from a middle support and creating the steps by folding the same element. From there we developed a new staircase using the folding where was needed as structure we tested several pieces made by hand until we found the best shape and structure.

We managed to find the right solution by experimenting with the physical model, letting us know how the structure worked and helping us identify more precisely where the moments of weakness and strength where working or not.

After designing and looking how it behaves in a physical way, we introduced the digital model to be analysed in karmba.

Looped Frames

nataliealima — Sun, 23 Mar 2014 14:46:04 +0000

Our aim was to create a minimal, wired framed structure comprised of individual components. These components where notched together in order to form a unified staircase.In order to ensure structural stability, the form was first physically tested. The structure was firstly laminated with a single layer of plastic and aluminium tape. When realising the materials rigidity, we when applied multiple layers of plastic and metal pieces placed in between each layer. This proved to be successful as the multiple layers of plastic stiffened the structure.

However, in order to strategically place the pieces of metal, we experimented with the model in Karamba.

This enabled us to examine the beam setup and test the cantilevers.

Finally, in order to connect each of the individual components, we used a notching system which proved to offer further stability to the overall form .

Beam Analyses comparing two structures

hristokovachev — Wed, 26 Feb 2014 17:39:00 +0000

We approach the problem comparing two different beam structures for the same 3D shape. Both structures have the same support points, loads and are made from the same size beams. After comparing the results form the two grids the conclusion is that moments and forces in grid 1 are smaller than grid 2 mainly because they (the forces) are shared between more elements. In conclusion Grid one will be the better static choice, however it will use more material ending with overall higher building expenses.

Pneumatic archetype part 2

Tobias Øhrstrøm — Mon, 10 Feb 2014 15:27:32 +0000

FOLDED SURFACES — 4 POINTS SUPPORT VS CANTILEVER

pongtidasantayanon — Mon, 10 Feb 2014 14:25:37 +0000

FOLDED SURFACES — 4 POINTS SUPPORT VS CANTILEVER

Defined Geometry Structural Assembly Structure Analysis

hristokovachev — Mon, 10 Feb 2014 14:18:12 +0000

For this exercise we created a semi complex shell and analysed it with the chosen four supports, gravity load and a specific chosen point load. In the structure analysis we compared that shell with two others using point loads in different positions in attempt to understand and see witch preforms better and why.

Experimental Structures

giacomofiorani — Mon, 03 Feb 2014 14:34:50 +0000

We found interesting the idea of taking paper or cardboard and increase its structural performance simply by folding the material. All experimental forms we built were all constructed by folding a single piece of paper. The inspiration of Origami and paper folding structures of Ren Resch led us to explore the structural capabilities of cardboard. We made different bending experiments with several patterns in cardboard and paper to understand the different opportunities and limits with triangular pasterns and also bending arches.

The component we are working was designed to form a larger structure through addition of the same repeated components and is a collapsible component which can have multiple structural behaviours.

The folds remove the problems of bending moments in the structure, and create a self bracing component and rather than force the cardboard to bend, the forces are redirected to the ground through the shortest path. As shown on the diagrams, due to the orientation of the fold, the component is stronger when a compressive force is applied through side A. The forces flow from upper part of component to lower part. If compressive force is applied to the other side, the loads will force the the component to bend and return to position as in first scenario. If forces are too large the component will bend in itself.

The design of component allows for multiple variations of structures. The next step to be taken with component would be to turn it into a spacial truss pipe system with members of varying thickness according to the load distribution along the members. It would be interesting to see on Karamba how are the forces being transferred to the ground and adapt and change and optimise thickness ofthe members of the triangulations accordingly .

“Triangles and nothing more”

Luis Leon Lopez — Sat, 01 Feb 2014 06:49:15 +0000

Our model is based on two simple structures , a triangle and a square this last devided in the half to make two triangles at the end. The triangle is one of the highest strenght structures because this does not deform unless we applied a big load compared to its size, the best part of this shape is that the three elements of the triangle can act in compression or tension, so doing an item almost perfect to build rigid structures.

Unlike the square is a weak member when it applies a load , when it happens is deformed in a rhomboid , the simplest solution for strengthening this type of element is putting an element dividing the square , forming two triangles , with this the element becomes very tough .

Our structures act as rigid members such as steel bridges, the idea was to have two surveyed points to change the normal condition of a Rigid Structure.
Based on these ideas we designed two different structures , where both elements behave differently.
Below you can see a structure where we use the combination of both elements to give strength and stability to the main structure , our goal was to have at least two points of support in order to be able to lift two opposite points to observe the deformation of the element, like we said before. The original prototype is a set of arcs mixed with triangles we are thinking to use 3d printing unions, to have the most close prototype to the design.

In the same way we show another design this time a dome made of only triangle elements in order to study the behavior of the elements in a different state , as we can see , the properties of the first structure is acting more in tension and compression but the most common force isthe tension .
Regarding the dome triangular elements the

behavior is quiet different because in this case the compressive force of the items shown here can appreciate the strength of the simple structure to a different tensile strength, which generally these elements act more .

We design the structures with pipes elements and with the help of rhino and grasshopper.

Deceptively Simple!!

adityakadabi — Sat, 01 Feb 2014 01:10:47 +0000

EXPERIMENTAL STRUCTURAL > ADITYA KADABI AND GEORGIOS ANGELOU