Tailoring snap-through loads in variable stiffness composites

A. Haldar, E. L. Jansen, R. Rolfes, P. M. Weaver

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Snap-through of multistable composites is a complex phenomenon that is difficult to characterize using simple analytical models. However, it is of paramount importance that the snap-through forces are accurately predicted if they are to be used in morphing structures. In this work, an accurate yet computationally fast model is proposed that computes the snap-through forces of variable stiffness (VS) laminates. The compatibility and the inplane equilibrium equations are first solved using differential quadrature method (DQM), and consequently, the in-plane stresses are written in terms of curvatures. The out-of-plane displacements are expressed in the form of Legendre functions, where the unknown coefficients of the displacement function are found using the Rayleigh-Ritz formulation. The calculated snap-through loads are then compared with Finite Element (FE) results.

Original languageEnglish
Title of host publicationAIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624105326
DOIs
Publication statusPublished - 2018
EventAIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 2018 - Kissimmee, United States
Duration: 8 Jan 201812 Jan 2018

Publication series

NameAIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 2018

Conference

ConferenceAIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 2018
Country/TerritoryUnited States
CityKissimmee
Period8/01/1812/01/18

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