# Short Bio

I'm an architect/engineer trying to bridge the gap between design and engineering.
I'm also interested in purely geometric problems found in architectural design.
I received a PhD from the University of Tokyo for my research about Dynamic Relaxation method and constraint conditions.
After that I worked for a Tokyo-based Computer Graphics and User Interface research group led by Takeo Igarashi, and had my work about Airy stress function-based form-finding approach accepted from SIGGRAPH (2015).
I worked for SOM in the US from 2015 to 2020 as an architect.

### Contact

masaaki[at]mikity.jp.net

# Projects

### King Ghidorah

A novel NURBS-based form finding method for tension-compression hybrid shells.
Instead of touting Airy stress functions, stress tensors are computed from continuous force diagram.

### Mothra

A NURBS-based form-finding method for compression-only shells. This work was presented at SIGGRAPH 2015.
Piecewise smooth Airy stress functions are computed using a second-order conic optimization solver and used to calculate stress tensors.

### Sprout

To make curves and surfaces 3d-printable

### geodesicFractal

A simple algorithm to generate geodesics and its application to architectural design

### Ricecooker (Suspended)

A set of custom components of Grasshopper that supports computational mechanics.

### Tensors, static Mechanics, and differential geometry (Japanese only but slowly translated to English.)

Remind that there are two types of multiplications between vectors; row vector $\times$ column vector = scalar, and column vector $\times$ row vector = matrix.
The former is called inner product. The latter is called…, there is no name.
The good start point of learning tensors is to find out the name of this product.

--

### Awards

• 8th Hangai Prize / IASS, Oct. 2010

### Publications in Japanese, Reviewed

##### 日本建築学会構造系論文集 (Journal of Structural and Construction Engineering)
• 三木優彰, 川口健一, 三項法と双対推定, 日本建築学会構造系論文集, Vol. 77, No. 674, 2012, pp. 611-618.
• 川口健一, 柯宛伶, 三木優彰, 付帯条件付き極小曲面と一般化最急降下法に関する研究, 日本建築学会構造系論文集, Vol. 73, No. 632, 2008, pp. 1773-1777.

### Publications, Japanese, without Review

##### Awards
• コロキウム構造形態の解析と創生2011優秀講演、2011年10月
• 日本建築学会大会シェル・空間構造部門優秀発表賞、2010年12月
• コロキウム構造形態の解析と創生2010形態創生コンテスト佳作、 2010年10月
• 東京大学大学院工学系研究科長賞、 2009年3月
page revision: 230, last edited: 10 Sep 2020 12:51