Ninety Nine Failures

Ninety Nine Failures | Digital Fabrication Lab Pavilion 2013 from T—ADS (Advanced Design Studies on Vimeo.

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Overview

This pavilion was designed by collaboration between the laboratory of University of Tokyo and Obayashi corporation.

The purpose of this pavilion was to evaluate the construction process, design process and fabrication process which cannot be done by school education, and to present a new problem.

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design

The overall shape of the pavilion was determined based on the results of the digital simulation using the Rhinoceros and the scale model test.

The constraints is that it is a curved surface that can be developed on a plane and that it is structurally constructable when assembled into a target shape. It is necessary to be able to be developed in a plane because when constructing this pavilion, the curved surface developed on the plane is lifted by a crane and the target shape is assembled. From there they further examined the structure and the behavior when deploying from both aspects of digital and analog.The shape was determined from 50 variations. The shape furthermore created a high-quality space both inside and outside.

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Each element used a very thin stainless steel sheet to make ultra light structure. Each element was composed of three layers of sheets, and crimped edges. It was inflated hydraulically to act as a compression structural element.

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The three dimensional shape of each element is formed during expansion.The shape of each element was confirmed by a series of mockups, and reflected in digital simulation. There are 225 elements in total, all of them networked.

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The shape of each element was determined by the following constraints.

・Geometric constraints

・Adjustment to avoid collision between elements

・Ease of makeing by robot arm

・Safety when inflating by hydraulic pressure

・Relationship with daylighting and wind load

In order to connect the elements, holes were drilled at each corner of each element, and a double cable made of stainless steel was fixed with aluminum crimp and stainless steel bolts.

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In the design process, a program was created by digital simulation using physical computation. Although each element was controlled by a complicated parameter, it was able to output data to the robot arm and efficiently cut and weld the member.

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