Abstract
AbstractThis paper proposes an approach for multicriterial optimization of modular structures with respect to their structural and geometrical properties. The approach is tested using the quickly deployable and reconfigurable modular ramp system Truss‐Z intended for pedestrian traffic. The focus is on modular structures composed of a moderate number of relatively complex modules, which feature an irregular, noncuboidal geometry. Such modules can be assembled into a variety of geometrically different configurations which do not adhere to any predefined spatial grid; their global geometry can be treated as free‐form and determined in situ during construction. The optimization variables represent local‐level geometrical and structural properties of a single module. The Pareto front is used to balance between two kinds of objectives. The geometrical objective quantifies the ability of the modules to generate geometrically versatile global structures that are well‐suited to comply with spatial constraints of real construction sites. The structural objective is formalized in analogy to the minimum weight problem with upper bound constraints imposed on the von Mises stress and the Euler buckling load ratio. A two‐level optimization scheme is employed with NSGA‐II at the top level and a simulated annealing with adaptive neighborhood at the lower level.
Highlights
Mass prefabrication and modularity are the common ways to minimize the cost and time of construction (Smith, 2011).they substantially limit the diversity of attainable forms, so that the resulting structures are suboptimal
This paper focuses on optimization of modular structures, which—in contrast to the structures periodic at the microand mesoscales—are composed of a relatively low number of relatively large and complex modules
Note that divisors of the full angle, such as 30◦ and 36◦, are discouraged, which is due to the increased overlapping and clustering of the TZ exit points
Summary
Some of the authors of this publication are working on these related projects: Innovative Extremely Modular Systems for temporary and permanent deployable structures and habitats: development, modeling, evaluation & optimization View project. All content following this page was uploaded by Machi Zawidzki on 10 October 2019. The user has requested enhancement of the downloaded file
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