Thermoset Shape Memory Polymer Variable Stiffness 4D Robotic Catheters.
Sign Up to like & getrecommendations! 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
A lagrange parametrization for the design of variable stiffness laminates
Sign Up to like & getrecommendations! 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
A variable stiffness joint with superelastic material
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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
Sign Up to like & getrecommendations! 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
Thermally induced multistable configurations of variable stiffness composite plates: Semi-analytical and finite element investigation
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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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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
Three-dimensional free vibration analysis of variable stiffness laminated composite rectangular plates
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DOI: 10.1016/j.compstruct.2018.04.028
Abstract: Abstract The free vibration of variable stiffness laminated composite rectangular plates is studied for the first time on the basis of three-dimensional elasticity theory combined with the p -version of the finite element method. Each… read more here.
Keywords: three dimensional; stiffness laminated; variable stiffness; laminated composite ... See more keywords
Nonlinear buckling analysis of variable stiffness composite plates based on the reduced order model
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DOI: 10.1016/j.compstruct.2018.08.092
Abstract: Abstract The variable-stiffness fiber composite plates which have an enhanced design flexibility, largely rely on laminate optimizations to maximize the buckling performance. The corresponding computational efficiency becomes a key issue, in particular when the nonlinear… read more here.
Keywords: reduced order; analysis; order model; variable stiffness ... See more keywords
Modeling crack propagation in variable stiffness composite laminates using the phase field method
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DOI: 10.1016/j.compstruct.2018.10.083
Abstract: Abstract The fracture processes of the constant/variable stiffness composite laminate (CSCL/VSCL) subjected to uni-axial tension is investigated using the phase-field method. The main objectives of this work are: (a) to study the crack propagation path… read more here.
Keywords: stiffness composite; field method; phase field; variable stiffness ... See more keywords
Buckling optimization of variable stiffness cylindrical shells through artificial intelligence techniques
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DOI: 10.1016/j.compstruct.2019.111513
Abstract: Abstract Thin-walled cylindrical shells are nowadays widely used for principal structures in the aerospace field. Despite the capacity to sustain high levels of axial compressive loads they are also easily prone to fall into buckling.… read more here.
Keywords: stiffness cylindrical; variable stiffness; optimization; artificial intelligence ... See more keywords
Curvature-controlled trajectory planning for variable stiffness composite laminates
Sign Up to like & getrecommendations! Published in 2020 at "Composite Structures"
DOI: 10.1016/j.compstruct.2020.111986
Abstract: Abstract Variable-stiffness laminates can redistribute the applied load and increase critical buckling loads compared to traditional straight fiber laminates. To take full advantage of fiber reinforced composite materials, a practical trajectory planning method is generated… read more here.
Keywords: composite laminates; trajectory planning; variable stiffness; stiffness composite ... See more keywords