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Observational analysis of twentieth century summer climate over North America
(Massachusetts Institute of Technology, 2016)
How did the climate of the central United States change over the course of the twentieth century? In this study, multiple complementary statistical analyses were carried out on weather and agricultural production data in ...
Geometrical optimization of arched structures under stochastic loading
(Massachusetts Institute of Technology, 2016)
This thesis presents a method for determining the moment-optimized shape y(x) for arched structures under unpredictable loading scenarios. A frame geometry optimization derivation is presented that demonstrates the ...
Shore-parallel sediment transport by waves and tides in inner shelf waters
(Massachusetts Institute of Technology, 2016)
In shallow waters the combined action of waves and currents significantly affects the motion of sediment on the bottom, and hence the nature and phase of their interactions with each other contribute to the shaping of the ...
A strain tensor method for three-dimensional optimal Michell structures
(Massachusetts Institute of Technology, 2016)
In the design of discrete structures such as trusses and frames, important quantitative goals such as minimal weight or minimal compliance often dominate. Many numerical techniques exist to address these needs. However, ...
High performance curtain wall mullion section design with various densities of gyroid
(Massachusetts Institute of Technology, 2016)
The thermal bridge problem in building fagades has become a topic of interest as the energy performance of building enclosure design required improvements with a global lead in sustainable building design. Curtain wall ...
Quantifying and integrating constructability into multi-objective steel floor framing design
(Massachusetts Institute of Technology, 2016)
This thesis explores the benefits and tradeoffs of two significant constructability considerations in structural steel floor framing design. A new constructability strategy combining both standardization and steel availability ...
Strength characterization of wood to wood connections using stress field analysis
(Massachusetts Institute of Technology, 2016)
Minimizing construction cost and material usage are two dominant aspects in structural design. As a building material, timber presents a cheap, renewable option. However, current practice favors steel connections for wood ...
Volumetric topology optimization under redundancy constraints
(Massachusetts Institute of Technology, 2016)
With ever-increasing pollution and scarcity of resources, structural optimization, the science of finding the optimal structural arrangements under equilibrium constraints, is becoming an increasing necessity in engineering ...
Form-finding of elastic gridshells
(Massachusetts Institute of Technology, 2016)
Elastic gridshells are obtained by elastic deformation of an initially flat grid into a three-dimensional shell-like geometry and were first implemented in architecture in the 1970's. Their mechanical behaviour, which ...
Material quantities of foundation systems in building structures
(Massachusetts Institute of Technology, 2016)
There are three major areas in which buildings consume energy: (1) energy consumption from operational processes, such as heating and electricity, (2) energy from building material production and supply, and (3) energy ...