A coupled DQ-Heaviside-NURBS approach to investigate nonlinear dynamic response of GRE cylindrical shells under impulse loads

Heydarpour, Y.; Mohammadzaheri, Morteza; Ghodsi, Mojtaba; Soltani, Payam; Al-Jahwari, Farooq; Bahadur, Issam; Al-Amri, Badar

doi:10.1016/j.tws.2021.107958

Cited by 5 publications

(5 citation statements)

References 69 publications

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“…Study [19] investigates the nonlinear dynamic reaction of layered composite cylindrical shells made of epoxy resin reinforced with glass fiber (GRE) under pulsed load based on the first-order shear deformation theory (FSDT -the Timoshenko type theory) of shells. It is assumed that the Greene deformation and the von Kármán conjecture take into consideration geometric nonlinearity due to the large deformation in the model.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…The following conclusions can be drawn from the above literature review [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]:…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…-most papers [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24] contain solutions only to direct problems that are solved by numerical methods, often by special software systems based on FEM, for example, LS-DYNA;…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…-along with a large number of works [8][9][10][11][12][13][14][15][16][17][18][19] tackling layered, heterogeneous, or reinforced shells, composite cylindrical shells are considered extremely rarely, although they are used in practice;…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

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Identification of the pulse axisymmetric load acting on a composite cylindrical shell, inhomogeneous in length, made of different materials

Voropay

GNATENKO

Yehorov

et al. 2022

EEJET

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The problem of identifying the load acting on the elements of structures belongs to the class of inverse problems of the mechanics of a deformable solid, which are often incorrect. Solving such problems is associated with the instability of the calculation results, which requires the development of special methods for their research. This predetermines the relevance of this study. The object of the study is a single-pass cylindrical shell consisting of two rigidly fastened butt-fastened sections made of different materials. Each of the shells is assumed to be elastic isotropic, having a cross-section of medium thickness. The equations of axisymmetric deformation of shells are used within the framework of Timoshenko hypotheses. An approach to solving direct and inverse problems for such discretely heterogeneous objects is proposed, which implies the conditional separation of a discretely heterogeneous cylindrical shell along the length, followed by the addition of functions of fictitious loads. The main analytical relationships for building a system of integral Volterra equations are given, for which an analytic-numerical solution is derived. The final ratios have been obtained, which make it possible to calculate the kinematic and force parameters of the study object in the process of non-stationary deformation. The inverse problem of identifying arbitrary loads acting on a shell that is heterogeneous in length is solved in a general form. An algorithm for the restoration of pulse loads has been developed, which is robust to errors in the initial data (about 5 %). The material related to solving direct and inverse problems for shells that are discretely heterogeneous in length can significantly advance the methodology for identifying pulse loads acting on structural elements

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…The following conclusions can be drawn from the above literature review [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]:…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Section: Literature Review and Problem Statementmentioning

confidence: 99%

See 2 more Smart Citations

Identification of the pulse axisymmetric load acting on a composite cylindrical shell, inhomogeneous in length, made of different materials

Voropay

GNATENKO

Yehorov

et al. 2022

EEJET

View full text Add to dashboard Cite

show abstract

“…Non-Uniform Rational B-Spline (NURBS) is widely used in contemporary computer-aided design (CAD) systems and computer-aided geometric design because of its generality in the expression of curves and surfaces (Abbasnia and Ghiasi, 2014; Luu et al , 2015; Heydarpour et al , 2021; Juhász, 2021; Mishra and Barik, 2021; Du and Wang, 2022; Li et al , 2022). It is a powerful tool to create complex curves and surfaces while respecting usual constraints of industrial conception.…”

Section: Introductionmentioning

confidence: 99%

Robotic plasma cladding complex NURBS curve coating using the bisection inverse search bow height control interpolation method

Wang

Shi

Wang

2022

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Purpose The bisection inverse search bow height control interpolation (BIS-BHCI) method for nonuniform rational B-splines (NURBS) curve is proposed to accomplish the serial robotic plasma cladding of planar complex curve coating with high precision. Design/methodology/approach A plasma–computer integrated cladding system is constructed based on a Motoman-UP6 serial robot and a plasma power. Based on the BIS-BHCI method, combining the serial robotic kinematics with the NURBS curve model, an offline plasma cladding software is developed for Motoman-UP6. Before plasma cladding, a planar NURBS curve coating is designed and defined and its BIS-BHCI is carried out with proper parameters. Then, the cladding programs are generated using the BIS-BHCI results and the robotic kinematics and inputted into the serial robotic controller. After that, the plasma cladding of the planar NURBS curve coating is implemented based on the Motoman-UP6 serial robot. Findings The simulation and plasma cladding for the NURBS curve coating shows that the BIS-BHCI method is feasible and effective. Plasma cladding of complex NURBS curve coating based on serial robot is feasible and effective. Originality/value The complex NURBS curve coating is prepared based on a serial robot platform for the first time. It provides a theoretical and technical basis for plasma cladding to produce surface coatings of industrial complex parts. With the increasing application of complex parts, the plasma cladding process of complex NURBS curve coatings has a broad application prospect.

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Free Vibration Investigation of Single-Phase Porous FG Sandwich Cylindrical Shells: Analytical, Numerical and Experimental Study

Mouthanna,

Bakhy,

Al-Waily

et al. 2023

Iran J Sci Technol Trans Mech Eng

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A coupled DQ-Heaviside-NURBS approach to investigate nonlinear dynamic response of GRE cylindrical shells under impulse loads

Cited by 5 publications

References 69 publications

Identification of the pulse axisymmetric load acting on a composite cylindrical shell, inhomogeneous in length, made of different materials

Identification of the pulse axisymmetric load acting on a composite cylindrical shell, inhomogeneous in length, made of different materials

Robotic plasma cladding complex NURBS curve coating using the bisection inverse search bow height control interpolation method

Free Vibration Investigation of Single-Phase Porous FG Sandwich Cylindrical Shells: Analytical, Numerical and Experimental Study

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