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   Articles with "variable stiffness" as a keyword



Thermoset Shape Memory Polymer Variable Stiffness 4D Robotic Catheters.

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recommendations! Published in 2021 at "Advanced science"

DOI: 10.1002/advs.202103277

Abstract: Variable stiffness catheters are typically composed of an encapsulated core. The core is usually composed of a low melting point alloy (LMPA) or a thermoplastic polymer (TP). In both cases, there is a need to… read more here.

Keywords: stiffness; memory polymer; shape memory; thermoset shape ... See more keywords

Variable Stiffness Fibers Enabled Universal and Programmable Re‐Foldability Strategy for Modular Soft Robotics (Adv. Sci. 10/2024)

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recommendations! Published in 2024 at "Advanced Science"

DOI: 10.1002/advs.202470056

Abstract: Soft Actuators In article number 2307350, Zhongdong Jiao and co‐workers present a universal and programmable re‐foldability strategy to integrate multiple origami patterns into a single soft origami actuator. This strategy can selectively activate and deactivate… read more here.

Keywords: robotics; foldability strategy; universal programmable; variable stiffness ... See more keywords

Bending performance analysis of variable stiffness composite laminates

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recommendations! Published in 2024 at "Polymer Composites"

DOI: 10.1002/pc.28249

Abstract: For fiber‐reinforced polymer structures, the out‐of‐plane stiffness is much lower than the in‐plane stiffness and is extremely prone to damage and instability. The potential of variable stiffness (VS) laminates was explored to enhance the stiffness… read more here.

Keywords: laminates bending; bending performance; analysis variable; variable stiffness ... See more keywords

Compressive buckling of variable stiffness laminated beams with delamination defects

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recommendations! Published in 2024 at "Polymer Composites"

DOI: 10.1002/pc.29198

Abstract: Fiber reinforced polymer (FRP) structures in practical applications inevitably contain some micro‐defects, which are susceptible to result in the degradation of the mechanical properties, and even lead to structural instability. A series of variable stiffness… read more here.

Keywords: laminated beams; compressive buckling; flexural stiffness; variable stiffness ... See more keywords

Effect of Fiber Paths and Structural Parameters on the Buckling Resistance of Nonlinear Variable Stiffness Composites

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recommendations! Published in 2025 at "Polymer Composites"

DOI: 10.1002/pc.70071

Abstract: The buckling resistance is a fundamental design criterion for thin‐walled composite structures in aerospace applications. This resistance can be enhanced through variable stiffness (VS) design, achieved by automatic fiber placement (AFP) along curved paths. While… read more here.

Keywords: resistance; buckling resistance; variable stiffness; parameters buckling ... See more keywords

A lagrange parametrization for the design of variable stiffness laminates

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recommendations! Published in 2018 at "Structural and Multidisciplinary Optimization"

DOI: 10.1007/s00158-017-1882-2

Abstract: A Lagrange parameterization of lamination parameters which are used for optimization of variable stiffness laminates is presented. The advantages of the approach are: a) the design variables become independent of the finite element mesh and,… read more here.

Keywords: design variables; design; variable stiffness; lagrange parametrization ... See more keywords

Mixed-integer, multi-objective layerwise optimization of variable-stiffness composites with gaps and overlaps

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recommendations! Published in 2025 at "Structural and Multidisciplinary Optimization"

DOI: 10.1007/s00158-025-04043-6

Abstract: Automated fiber placement (AFP) has made it possible to vary the steering angle along curvilinear fiber paths, thus improving mechanical performance compared to traditional composite materials. Variable-angle tow (VAT) or variable-stiffness composites (VSC) have been… read more here.

Keywords: mixed integer; gaps overlaps; variable stiffness; stiffness composites ... See more keywords

A variable stiffness joint with superelastic material

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recommendations! Published in 2017 at "Meccanica"

DOI: 10.1007/s11012-016-0423-1

Abstract: The aim of this paper is to provide the design of a variable stiffness joint able to perform large rotations without undergoing plastic strain. The joint comprises two leaf springs of variable length, allowing to… read more here.

Keywords: joint superelastic; stiffness joint; variable stiffness; material ... See more keywords

Design of variable stiffness composite structures using lamination parameters with fiber steering constraint

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recommendations! Published in 2019 at "Composites Part B: Engineering"

DOI: 10.1016/j.compositesb.2019.02.004

Abstract: Abstract In this study, a lamination parameter based optimization algorithm is developed in a finite element framework using classical plate deformation theory. The optimization reveals lamination parameter distribution over the plate which are then converted… read more here.

Keywords: design variable; stiffness composite; lamination; constraint ... See more keywords
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Thermally induced multistable configurations of variable stiffness composite plates: Semi-analytical and finite element investigation

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recommendations! Published in 2018 at "Composite Structures"

DOI: 10.1016/j.compstruct.2017.02.014

Abstract: Abstract Multistable structures used in morphing applications are conventionally achieved by using unsymmetric laminates with straight fibers. An ideal morphing system always calls for a structure with highly anisotropic internal architecture. With the advancement of… read more here.

Keywords: induced multistable; semi analytical; finite element; thermally induced ... See more keywords

Static analysis of thin-walled laminated composite closed-section beams with variable stiffness

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recommendations! Published in 2017 at "Composite Structures"

DOI: 10.1016/j.compstruct.2017.08.092

Abstract: Abstract Static behavior of thin-walled laminated composite closed cross-section beams having variable stiffness is investigated in this study. The analytical model used accounts for flexural–torsional coupling and warping effects as well as the variable stiffness… read more here.

Keywords: walled laminated; thin walled; variable stiffness; laminated composite ... See more keywords