Standard

Design and characterization of variable stiffness structural joints. / Wang, Qinyu; Senatore, Gennaro; Jansen, Kaspar; Habraken, Arjan; Teuffel, Patrick.

In: Materials and Design, Vol. 187, 108353, 2020.

Research output: Contribution to journalArticleScientificpeer-review

Harvard

Wang, Q, Senatore, G, Jansen, K, Habraken, A & Teuffel, P 2020, 'Design and characterization of variable stiffness structural joints' Materials and Design, vol. 187, 108353. https://doi.org/10.1016/j.matdes.2019.108353

APA

Wang, Q., Senatore, G., Jansen, K., Habraken, A., & Teuffel, P. (2020). Design and characterization of variable stiffness structural joints. Materials and Design, 187, [108353]. https://doi.org/10.1016/j.matdes.2019.108353

Vancouver

Wang Q, Senatore G, Jansen K, Habraken A, Teuffel P. Design and characterization of variable stiffness structural joints. Materials and Design. 2020;187. 108353. https://doi.org/10.1016/j.matdes.2019.108353

Author

Wang, Qinyu ; Senatore, Gennaro ; Jansen, Kaspar ; Habraken, Arjan ; Teuffel, Patrick. / Design and characterization of variable stiffness structural joints. In: Materials and Design. 2020 ; Vol. 187.

BibTeX

@article{d44c8340335e4759822ee50b38f66c1c,
title = "Design and characterization of variable stiffness structural joints",
abstract = "This paper presents design and characterization of a new type of structural joint which can vary its stiffness through actuation. Stiffness variation is employed to control the dynamic response of frame structures equipped with such joints. The joint is made of a shape memory polymer (SMP) core which is reinforced by an SMP-aramid composite skin. A controlled stiffness reduction of the joint core material, induced by resistive heating, results in a shift of the structure natural frequencies. This work comprises two main parts: 1) characterization of material thermomechanical properties and viscoelastic behavior; 2) numerical simulations of the dynamic response of a one-story planar frame equipped with two such variable stiffness joints. The experimental material model obtained through Dynamic Mechanical Analysis has been used to carry out modal and non-linear transient analysis. However, control time delays due to heating and cooling as well as fatigue are not considered in the numerical simulations. Results have shown that through joint stiffness control, the fundamental frequency shifts up to 8.72{\%} causing a drastic reduction of the dynamic response under resonance loading. The SMP-aramid skin is effective to restrain the joint deformation in the activated state while maintaining viscoelastic damping properties.",
keywords = "Adaptive structures, Control, Natural frequency shift, Structural dynamics, Variable stiffness joint, Viscoelastic material",
author = "Qinyu Wang and Gennaro Senatore and Kaspar Jansen and Arjan Habraken and Patrick Teuffel",
year = "2020",
doi = "10.1016/j.matdes.2019.108353",
language = "English",
volume = "187",
journal = "Materials & Design",
issn = "0264-1275",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Design and characterization of variable stiffness structural joints

AU - Wang, Qinyu

AU - Senatore, Gennaro

AU - Jansen, Kaspar

AU - Habraken, Arjan

AU - Teuffel, Patrick

PY - 2020

Y1 - 2020

N2 - This paper presents design and characterization of a new type of structural joint which can vary its stiffness through actuation. Stiffness variation is employed to control the dynamic response of frame structures equipped with such joints. The joint is made of a shape memory polymer (SMP) core which is reinforced by an SMP-aramid composite skin. A controlled stiffness reduction of the joint core material, induced by resistive heating, results in a shift of the structure natural frequencies. This work comprises two main parts: 1) characterization of material thermomechanical properties and viscoelastic behavior; 2) numerical simulations of the dynamic response of a one-story planar frame equipped with two such variable stiffness joints. The experimental material model obtained through Dynamic Mechanical Analysis has been used to carry out modal and non-linear transient analysis. However, control time delays due to heating and cooling as well as fatigue are not considered in the numerical simulations. Results have shown that through joint stiffness control, the fundamental frequency shifts up to 8.72% causing a drastic reduction of the dynamic response under resonance loading. The SMP-aramid skin is effective to restrain the joint deformation in the activated state while maintaining viscoelastic damping properties.

AB - This paper presents design and characterization of a new type of structural joint which can vary its stiffness through actuation. Stiffness variation is employed to control the dynamic response of frame structures equipped with such joints. The joint is made of a shape memory polymer (SMP) core which is reinforced by an SMP-aramid composite skin. A controlled stiffness reduction of the joint core material, induced by resistive heating, results in a shift of the structure natural frequencies. This work comprises two main parts: 1) characterization of material thermomechanical properties and viscoelastic behavior; 2) numerical simulations of the dynamic response of a one-story planar frame equipped with two such variable stiffness joints. The experimental material model obtained through Dynamic Mechanical Analysis has been used to carry out modal and non-linear transient analysis. However, control time delays due to heating and cooling as well as fatigue are not considered in the numerical simulations. Results have shown that through joint stiffness control, the fundamental frequency shifts up to 8.72% causing a drastic reduction of the dynamic response under resonance loading. The SMP-aramid skin is effective to restrain the joint deformation in the activated state while maintaining viscoelastic damping properties.

KW - Adaptive structures

KW - Control

KW - Natural frequency shift

KW - Structural dynamics

KW - Variable stiffness joint

KW - Viscoelastic material

UR - http://www.scopus.com/inward/record.url?scp=85075533908&partnerID=8YFLogxK

U2 - 10.1016/j.matdes.2019.108353

DO - 10.1016/j.matdes.2019.108353

M3 - Article

VL - 187

JO - Materials & Design

T2 - Materials & Design

JF - Materials & Design

SN - 0264-1275

M1 - 108353

ER -

ID: 68383441