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Nizar Bel Hadj Ali

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Related publications (21)

Page 1 of 2

Analysis of clustered tensegrity structures using a modified dynamic relaxation algorithm

Ian Smith, Nizar Bel Hadj Ali, Landolf-Giosef-Anastasios Rhode-Barbarigos

Tensegrities are spatial, reticulated and lightweight structures that are increasingly investigated as structural solutions for active and deployable structures. Tensegrity systems are composed only of axially loaded elements and this provides opportunitie ...

Elsevier2011

Deployment of a Pentagonal Hollow-Rope Tensegrity Module

Ian Smith, Nizar Bel Hadj Ali, Landolf-Giosef-Anastasios Rhode-Barbarigos, René Motro

Tensegrity structures are spatial reticulated structures composed of cables and struts. Tensegrity systems are good candidates for adaptive and deployable structures and thus have applications in various engineering fields. A “hollow-rope” tensegrity syste ...

2011

Configuration of control system for damage tolerance of a tensegrity bridge

Ian Smith, Nizar Bel Hadj Ali, Sinan Korkmaz

Tensegrity structures are spatial, discrete, and lightweight structures that are composed of struts in compression and pre-stressed cables. Stability is provided by the self-stress state between elements independently of external actions. Tensegrity struct ...

Elsevier2012

Designing tensegrity modules for pedestrian bridges

Ian Smith, Nizar Bel Hadj Ali, Landolf-Giosef-Anastasios Rhode-Barbarigos, René Motro

Tensegrity systems are spatial structures composed of tensile and compression components in a self-equilibrated state of prestress. The tensegrity concept has already been studied by researchers in various fields over the past decades. A family of tensegri ...

Elsevier2010

Determining Control Strategies for Damage Tolerance of an Active Tensegrity Structure

Ian Smith, Nizar Bel Hadj Ali, Sinan Korkmaz

Tensegrity structures are spatial, reticulate and lightweight systems composed of struts and cables. Stability is provided by a self-stress state between tensioned and compressed elements. Tensegrities have received interest among scientists and engineers ...

Elsevier2011

Design optimization and dynamic analysis of a tensegrity-based footbridge

Ian Smith, Nizar Bel Hadj Ali, Landolf-Giosef-Anastasios Rhode-Barbarigos

Tensegrity structures are spatial structural systems composed of struts and cables with pin-jointed connections. Their stability is provided by the self-stress state in tensioned and compressed members. Although much progress has been made in advancing res ...

Elsevier2010

Multi-stage production cost optimization of semi-rigid steel frames using genetic algorithms

Nizar Bel Hadj Ali

The response of a steel structure is closely related to the behavior of its joints. This means that it is necessary to take explicit account of joint properties in order to ensure a consistent approach to design optimization of steel frames. Semi-rigid des ...

2009

Measurement System Configuration for Damage Identification of Continuously Monitored Structures

Ian Smith, Nizar Bel Hadj Ali, Ngoc Thanh Trinh, Irwanda Laory

Measurement system configuration is an important task in structural health monitoring in that decisions influence the performance of monitoring systems. This task is generally performed using only engineering judgment and experience. Such approach may resu ...

American Society of Civil Engineers2012

Mechanism-Based Approach for the Deployment of a Tensegrity-Ring Module

Ian Smith, Nizar Bel Hadj Ali, Landolf-Giosef-Anastasios Rhode-Barbarigos, René Motro, Costanza Schulin

Tensegrity structures are spatial systems composed of tension and compression components in a self-equilibrated prestress stable state. Although the concept is over 60 years old, few tensegrity-based structures have been used for engineering purposes. Tens ...

2012

A dynamic-relaxation formulation for analysis of cable structures with sliding-induced friction

Ian Smith, Nizar Bel Hadj Ali, Ann Christine Sychterz

In many cable structures, special types of joints are designed to allow cables to slide freely along the joints. Thus, a number of discrete cable elements are substituted by a single continuous cable that slides over multiple nodes. Continuous cables are e ...

Elsevier2017

Measurement system design for damage detection using model-free data interpretation methods

Ian Smith, Nizar Bel Hadj Ali, Ngoc Thanh Trinh, Irwanda Laory

Designing a measurement system is usually performed using only engineering judgment and experience. Thus, it may result in either a large amount of redundant data or insufficient data leading to ambiguous results. This paper presents a systematic approach ...

2011

Design Aspects of a Deployable Tensegrity-Hollow-rope Footbridge

Ian Smith, Nizar Bel Hadj Ali, Landolf-Giosef-Anastasios Rhode-Barbarigos, René Motro

Tensegrity structures are composed of cables and struts in a prestressed self-equilibrium. Although tensegrity first appeared in the 1950s, it is seldom used in civil engineering. This paper focuses on the design aspects of a deployable tensegrity-hollow-r ...

2012

Configuration of Control System for an Adaptive Tensegrity Structure

Ian Smith, Nizar Bel Hadj Ali, Sinan Korkmaz

2010

Dynamic behavior and vibration control of a tensegrity structure

Ian Smith, Nizar Bel Hadj Ali

Tensegrities are lightweight space reticulated structures composed of cables and struts. Stability is provided by the self-stress state between tensioned and compressed elements. Tensegrity systems have in general low structural damping, leading to challen ...

Elsevier2010

Designing measurement systems for continuous monitoring of structures

Ian Smith, Nizar Bel Hadj Ali, Ngoc Thanh Trinh, Irwanda Laory

A good measurement system improves capability to identify the behavior of civil engineering structures. This paper presents a measurement-system design approach for continuous monitoring of structures. This approach performs two tasks: (1) determining the ...

2011

Nizar Bel Hadj Ali

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Analysis of clustered tensegrity structures using a modified dynamic relaxation algorithm

Deployment of a Pentagonal Hollow-Rope Tensegrity Module

Configuration of control system for damage tolerance of a tensegrity bridge

Designing tensegrity modules for pedestrian bridges

Determining Control Strategies for Damage Tolerance of an Active Tensegrity Structure

Design optimization and dynamic analysis of a tensegrity-based footbridge

Multi-stage production cost optimization of semi-rigid steel frames using genetic algorithms

Measurement System Configuration for Damage Identification of Continuously Monitored Structures

Mechanism-Based Approach for the Deployment of a Tensegrity-Ring Module

A dynamic-relaxation formulation for analysis of cable structures with sliding-induced friction

Measurement system design for damage detection using model-free data interpretation methods

Design Aspects of a Deployable Tensegrity-Hollow-rope Footbridge

Configuration of Control System for an Adaptive Tensegrity Structure

Dynamic behavior and vibration control of a tensegrity structure

Designing measurement systems for continuous monitoring of structures

Dynamic analysis and vibration control of an active tensegrity structure

Self-Repair of a Tensegrity Pedestrian Bridge through Grouped Actuation

Comparing two design strategies for tensegrity structures

Comparison of Two Active Control Strategies on a Tensegrity Structure

Dynamic analysis and vibration control of an active tensegrity structure