Publications de Arka Prabhata Reksowardojo

Design of ultra-lightweight and energy-efficient civil structures through shape morphing

Arka Prabhata Reksowardojo, Gennaro Senatore

This paper gives a new formulation to synthesize load-responsive structures through shape morphing. The design method is based on the minimization of the whole-life energy, which comprises an embodied share in the material and an operational share for adap ...

Pergamon-Elsevier Science Ltd2023

Design and testing of a low-energy and -carbon prototype structure that adapts to loading through shape morphing

Ian Smith, Arka Prabhata Reksowardojo, Gennaro Senatore

This paper presents an experimental validation of a new design method for adaptive structures that counteract the effect of loading through shape morphing. The structure is designed to morph into target shapes that are optimal to take external loads throug ...

PERGAMON-ELSEVIER SCIENCE LTD2022

Force and Shape Control Strategies for Minimum Energy Adaptive Structures

Arka Prabhata Reksowardojo, Gennaro Senatore

This work presents force and shape control strategies for adaptive structures subjected to quasi-static loading. The adaptive structures are designed using an integrated structure-control optimization method developed in previous work, which produces minim ...

2020

A proof of equivalence of two force methods for active structural control

Arka Prabhata Reksowardojo, Gennaro Senatore

This paper gives a proof of equivalence between two existing force methods (FM) for structural analysis: The Integrated Force Method (IFM) and a force method based on singular value decomposition (SVD) of the equilibrium conditions here named as SVD-FM. Re ...

2020

Design of structures that adapt to loads through large shape changes

Ian Smith, Arka Prabhata Reksowardojo, Gennaro Senatore

Adaptive structures can modify their geometry and internal forces through sensing and mechanical actuation in order to maintain optimal performance under changing actions. Previous work has shown that well-conceived adaptive design strategies achieve subst ...

2020

Design and control of a prototype structure that adapts to loading through large shape changes

Ian Smith, Arka Prabhata Reksowardojo, Gennaro Senatore, Apoorv Srivastava

This paper reports on experimental testing that was carried out on a prototype adaptive structure designed to counteract the effect of loading through controlled large shape changes. The prototype is 6.6 m truss equipped with 12 linear actuators which has ...

ELSEVIER2020

Shape changes through geometric nonlinear control as a strategy for structural adaptation

Arka Prabhata Reksowardojo

Adaptive structures modify their geometry and internal forces through sensing and mechanical actuation in order to maintain optimal performance under changing actions. Previous work has shown that well-conceived adaptive design strategies achieve substanti ...

EPFL2020

Experimental Testing of a Small-Scale Truss Beam That Adapts to Loads Through Large Shape Changes

Ian Smith, Arka Prabhata Reksowardojo, Gennaro Senatore

Adaptive structures have the ability to modify their shape and internal forces through sensing and actuation in order to maintain optimal performance under changing actions. Previous studies have shown that substantial whole-life energy savings with respec ...

2019

Structures that adapt to loads through large shape changes: design and optimization

Ian Smith, Arka Prabhata Reksowardojo, Gennaro Senatore

The construction industry is a major contributor to the consumption of mined material resources and to the global energy demand. It is thus important to consider energy and material efficiency criteria for the design of civil structures. Through sensing an ...

Taylor & Francis2019

Experimental testing of a small-scale truss beam that adapts to loads through large shape changes

Ian Smith, Arka Prabhata Reksowardojo, Gennaro Senatore

Adaptive structures can modify their shape and internal forces through sensing and actuation in order to maintain optimal performance under changing actions. Substantial whole-life energy can be saved with respect to traditional passive designs through wel ...

2019

Actuator Layout Optimization for Adaptive Structures Performing Large Shape Changes, Advanced Computing Strategies for Engineering

Ian Smith, Arka Prabhata Reksowardojo, Gennaro Senatore

Adaptive structures are sensed and actuated to modify internal forces and shape to maintain optimal performance in response to loads. The use of large shape changes as a structural adaptation strategy to counteract the effect of loads has been investigated ...

2018

A new method to design structures that adapt to loads via large shape changes

Ian Smith, Arka Prabhata Reksowardojo, Gennaro Senatore

The construction industry contributes to more than a third of the global energy demand and consumes almost half of all mined material resources. It is thus important to include energy and material efficiency criteria for the design of civil structures. Ada ...

2018

Large and reversible shape changes as a strategy for structural adaptation

Ian Smith, Arka Prabhata Reksowardojo, Gennaro Senatore

Adaptive structures are sensed and actuated to perform tasks such as modifying their internal load-path in response to external actions to maintain optimal performance. Shape control and load-path redirection have been investigated to counteract the effect ...

2017