Buckling analysis and design of anisogrid composite lattice conical shells

Морозов, Е.В.; Лопатин, А.В.; Нестеров, В. А.

doi:10.1016/j.compstruct.2011.06.015

Cited by 56 publications

(14 citation statements)

References 5 publications

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“…(6)(7)(8) are specified in correspondence to the load acting at the tip of the shell, namely, bending moment, torsional moment, and axial force.…”

Section: Membrane Stress Resultantsmentioning

confidence: 99%

“…The fundamental frequency of a cantilever anisogrid shell is also approached in [7], aiming at the fuselage of an unmanned space vehicle. The structural behaviour of anisogrid lattice conical shells under various loading condition is also studied by Morozov et al [8] via finite element analysis.…”

Section: Introductionmentioning

confidence: 99%

“…Calculation in accordance with foregoing Equations gives the flexural, torsional and axial stiffness as reported inTable 1. The finite-element counterpart is modelled with overall 11200 bar elements, and with a rigid element at the top, as earlier, Figs (6)(7)(8)…”

mentioning

confidence: 99%

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Flexural, torsional, and axial global stiffness properties of anisogrid lattice conical shells in composite material

Totaro

2016

Composite Structures

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“…(6)(7)(8) are specified in correspondence to the load acting at the tip of the shell, namely, bending moment, torsional moment, and axial force.…”

Section: Membrane Stress Resultantsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Flexural, torsional, and axial global stiffness properties of anisogrid lattice conical shells in composite material

Totaro

2016

Composite Structures

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“…This algorithm has been implemented in the form of a finiteelement model generator program specifically developed for the problem under consideration. The generator was created using an internal FEA package code and has been applied to the automated construction of the finite-element models of conical lattice shells having various structural parameters (Morozov et al (2011b)).…”

Section: Conical Lattice Shellsmentioning

confidence: 99%

Computer modelling and simulation of the mechanical response of composite lattice structures

2017

Syme, G., Hatton MacDonald, D., Fulton, B. And Piantadosi, J. (Eds) MODSIM2017, 22nd International Congress on Modelling and Si

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Composite lattice shells are highly efficient and extensively used in various structural applications, such as rocket interstages, payload adapters for spacecraft launchers, fuselage components for aerial vehicles, and components of the deployable space antennas. The aim of this paper is to present an analytical approach based on the finite element discrete modelling that is capable of predicting mechanical behaviour of composite lattice structures with sufficient accuracy and, at the same time, is affordable in terms of computational expenses. This allows the modelling approach proposed in this work to enable the efficient solution of relevant design and design optimisation problems. Structural analyses reported in the literature have been conventionally performed for composite cylindrical lattice shells. The paper investigates buckling behaviour of anisogrid composite lattice cylindrical, conical, and parabolic shells. The lattice shells are modelled as three-dimensional frame structures composed of curvilinear ribs subjected to the tension/compression, bending in two planes and torsion. The specialised finite-element model generation procedure (model generator/design modeller) is developed to control the orientation of the beam elements allowing the original twisted geometry of the curvilinear ribs to be closely approximated. The generation of discrete models are presented and explained in detail for cylindrical and conical lattice shells. Buckling analyses are performed for the cylindrical and conical shells subjected to axial compressive loading, and for the structure composed of parabolic lattice shell loaded by transverse concentrated external load. The effects of varying the length of the shells, the number of helical ribs and the angles of their orientation on the buckling behaviour of lattice structures are investigated. Critical buckling loads and corresponding buckling mode shapes are determined based on the modelling approach proposed in this work. The effects of parameters of the lattice structure on the values of critical buckling loads, mode shapes are examined using parametric analyses. Based on the computations, the angles of orientation of helical ribs delivering maximum critical loads for a number of particular structural designs are identified. The results of these studies indicate that the modelling approach presented in this work can be successfully applied to the solution of design problems formulated for composite lattice shells.

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“…The method implements and improves some previous results of the fully analytical approach that is currently adopted at the state of the art. Morozov et al [11,12] investigated the buckling behavior of anisogrid composite lattice cylindrical and conical shells under axial compression, transverse bending, pure bending, and torsion. In that study, modeling and numerical analyses have been carried out using the finite-element software package COSMOS/M.…”

Section: Introductionmentioning

confidence: 99%

Development of a new method for design of stiffened composite pressure vessels using lattice structures

Taghavian¹,

Jam²,

Zabihpoor³

et al. 2015

Science and Engineering of Composite Materials

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A new method to design composite pressure vessels under strain and strength constraints using lattice structures is described. A graphical analysis is presented to find the optimum geometrical parameters of the rib for given fiber orientations. Minimum pressure vessel mass is determined from active execution of two constraints. Composite lattice structures are suggested as a new way of strain suppression among the commonly used methods such as (1) addition of extra plies, (2) use of composite material with a higher stiffness and (3) replacement of the circumferential layer with a second helical layer made of different materials. The experimental and analytical results of application of the method indicate that the vessel covered with composite lattice structures presented considerable weight savings with respect to traditional stiffened vessels.

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Buckling analysis and design of anisogrid composite lattice conical shells

Cited by 56 publications

References 5 publications

Flexural, torsional, and axial global stiffness properties of anisogrid lattice conical shells in composite material

Flexural, torsional, and axial global stiffness properties of anisogrid lattice conical shells in composite material

Computer modelling and simulation of the mechanical response of composite lattice structures

Development of a new method for design of stiffened composite pressure vessels using lattice structures

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