Готові списки джерел за темами / Thin-walled open-section

Добірка наукової літератури з теми "Thin-walled open-section"

Автор: Grafiati
Опубліковано: 14 березня 2023

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Статті в журналах з теми "Thin-walled open-section"

1

Chen, Zhewu, Zhanda Huang, Yong Guo, and Guibing Li. "Prediction of Mechanical Properties of Thin-Walled Bar with Open Cross-Section under Restrained Torsion." Coatings 12, no. 5 (April 21, 2022): 562. http://dx.doi.org/10.3390/coatings12050562.

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Thin-walled bars with an open cross-section are widely used in mechanical structures where weight and size control are particularly required. Thus, this paper attempts to propose a theoretical model for predicting the mechanical properties of a thin-walled bar with an open cross-section under restrained torsion. Firstly, a theoretical model with predictions of shear stress, buckling normal stress, and secondary shear stress of the thin-walled bar with open cross-section under the condition of restrained torsion was developed based on torsion theory. Then, physical test and finite element modeling data were employed to validate the theoretical predictions. The results indicate that the theoretical predictions show good agreements with data of finite element modeling and experiments. Therefore, the proposed theoretical model could be used for the prediction of the mechanical response of a thin-walled bar with an open annular section under restrained torsion.
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2

Šimić Penava, Diana, and Maja Baniček. "Critical Force Analysis of Thin-Walled Symmetrical Open-Section Beams." Applied Mechanics and Materials 827 (February 2016): 283–86. http://dx.doi.org/10.4028/www.scientific.net/amm.827.283.

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This paper analyzes critical forces and stability of steel thin-walled C-cross-section beams without lateral restraints. Mechanical properties of the rods material are determined by testing standard specimens in a laboratory. Based on the obtained data, the stability analysis of rods is carried out and critical forces are determined: analytically by using the theory of thin-walled rods, numerically by using the finite element method (FEM), and experimentally by testing the C-cross-section beams. The analysis of critical forces and stability shows that the calculation according to the theory of thin-walled rods does not take the effect of local buckling into account, and that the resulting critical global forces do not correspond to the actual behaviour of the rod. The FEM analysis and experimental test show that the simplifications, which have been introduced into the theory of thin-walled rods with open cross-sections, significantly affect final results of the level of the critical force.
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3

HEMATIYAN, M. R., and E. ESTAKHRIAN. "TORSION OF FUNCTIONALLY GRADED OPEN-SECTION MEMBERS." International Journal of Applied Mechanics 04, no. 02 (June 2012): 1250020. http://dx.doi.org/10.1142/s1758825112500202.

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There exist some approximate analytical methods for torsion analysis of homogeneous open cross-section members; however, no analytical formulation has been presented for solving a torsion problem of inhomogeneous open cross-section members yet. In this paper, an approximate analytical method for the torsion analysis of thin- to moderately thick-walled functionally graded open-section members with uniform thickness is presented. The shear modulus of rigidity is assumed to have a variation across the thickness. The cross-section is decomposed into some straight, curved and end segments. The torsion problem is then solved in each segment considering some appropriate approximations. By presenting three examples, accuracy of the presented method with respect to thickness, corner radius, and material parameters are investigated. The results show that the proposed method is useful for torsion analysis of thin- to moderately thick-walled functionally graded open-section members.
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4

Ecsedi, István, Ákos József Lengyel, Attila Baksa, and Dávid Gönczi. "Saint-Venant’s torsion of thin-walled nonhomogeneous open elliptical cross section." Multidiszciplináris tudományok 11, no. 5 (2021): 151–58. http://dx.doi.org/10.35925/j.multi.2021.5.15.

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This paper deals with the Saint-Venant’s torsion of thin-walled isotropic nonhomogeneous open elliptical cross section whose shear modulus depends on the one of the curvilinear coordinates which define the cross-sectional area of the beam. The approximate solution of torsion problem is obtained by variational method. The usual simplification assumptions are used to solve the uniform torsion problem of bars with thin-walled elliptical cross-sections. An example illustrates the application of the derived formulae of shearing stress and torsional rigidity.
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5

Gupta, R. K., and K. P. Rao. "Instability of laminated composite thin-walled open-section beams." Composite Structures 4, no. 4 (January 1985): 299–313. http://dx.doi.org/10.1016/0263-8223(85)90030-3.

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6

Sun, De Fa. "Overall Stability of Open Cold-Formed Thin-Walled Steel Members with Hat Sections and Batten Plates under Axial Loads." Advanced Materials Research 368-373 (October 2011): 89–93. http://dx.doi.org/10.4028/www.scientific.net/amr.368-373.89.

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Batten plates can play a significant role in reducing the bearing capacity of the entire component and preventing the upward warpage deformation in the opening section. The specific number of batten plates should be calculated for the open cold-formed thin-walled steel structure. By theoretical analysis, this study develops the flexural-torsional buckling formula for the open hat-section cold-formed thin-walled axially compressed members with batten plates. The calculating results show that, according to the configuration rule with 40 iy space between batten plates along the opening direction in the open thin-walled steel members, the warpage deformation will be effectively prevented in the opening direction. Besides, the bearing capacity of the entire member will be increased. The proposed calculation methods can actively complement the existing code.
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7

Sun, De Fa. "Overall Stability of Cold-Formed Steel Lipped Channel Axially Compressed Members with Batten Plates." Applied Mechanics and Materials 94-96 (September 2011): 953–57. http://dx.doi.org/10.4028/www.scientific.net/amm.94-96.953.

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Анотація:
Batten plates can play a significant role in reducing the bearing capacity of the entire component and preventing the upward warpage deformation in the opening section. The specific number of batten plates should be calculated for the open cold-formed thin-walled steel structure. By theoretical analysis, this study develops the flexural-torsional buckling formula for the open lipped-channel section cold-formed thin-walled axially compressed members with batten plates. The calculating results show that, according to the configuration rule with 80 iy space between batten plates along the opening direction in the open thin-walled steel members, the warpage deformation will be effectively prevented in the opening direction. Besides, the bearing capacity of the entire member will be increased. The proposed calculation methods can actively complement the existing code.
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8

Andjelic, Nina, and Vesna Milosevic-Mitic. "An approach to the optimization of thin-walled cantilever open section beams." Theoretical and Applied Mechanics 34, no. 4 (2007): 323–40. http://dx.doi.org/10.2298/tam0704323a.

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An approach to the optimization of the thin-walled cantilever open section beams subjected to the bending and to the constrained torsion is considered. The problem is reduced to the determination of minimum mass, i.e. minimum cross-sectional area of structural thin-walled I-beam and channel-section beam elements for given loads, material and geometrical characteristics. The area of the cross-section is assumed to be the objective function. The stress constraints are introduced. Applying the Lagrange multiplier method the equations, whose solutions represent the optimal values of the ratios of the parts of the chosen cross-section, are formed. The obtained results are used for numerical calculation.
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9

Kreja, Ireneusz, Tomasz Mikulski, and Czeslaw Szymczak. "ADJOINT APPROACH SENSITIVITY ANALYSIS OF THIN‐WALLED BEAMS AND FRAMES." JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT 11, no. 1 (March 31, 2005): 57–64. http://dx.doi.org/10.3846/13923730.2005.9636333.

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Sensitivity analysis of beams and frames assembled of thin‐walled members is presented within the adjoint approach. Static loads and structures composed of thin‐walled members with the bisymmetrical open cross‐section are considered. The analysed structure is represented by the one‐dimensional model consisting of thin‐walled beam elements based on the classical assumptions of the theory of thin‐walled beams of non‐deformable cross‐section together with superelements applied in place of location of structure nodes, restraints and stiffeners. The results of sensitivity analysis, obtained for the structure model described above, are compared with the results of the detailed FEM model, where the whole structure is discretised with the use of QUAD4 shell elements of the system MSC/NASTRAN.
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10

Omidvar, B., and A. Ghorbanpoor. "Nonlinear FE Solution for Thin-Walled Open-Section Composite Beams." Journal of Structural Engineering 122, no. 11 (November 1996): 1369–78. http://dx.doi.org/10.1061/(asce)0733-9445(1996)122:11(1369).

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Дисертації з теми "Thin-walled open-section"

1

Hamid, A. B. A. "Bending of thin-walled beams of shallow open section." Thesis, University of Strathclyde, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.303260.

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2

King, Simon Alexander. "Nonlinear and chaotic dynamics of thin-walled open-section deployable structures." Thesis, University of Cambridge, 1998. https://www.repository.cam.ac.uk/handle/1810/272155.

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3

NINA, JULIO CESAR COAQUIRA. "NONLINEAR OSCILLATIONS AND DYNAMIC INSTABILITY OF THIN-WALLED BEAMS WITH OPEN CROSS-SECTION." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2016. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=33893@1.

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Анотація:
PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO
COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
PROGRAMA DE EXCELENCIA ACADEMICA
Estruturas com elementos de seção aberta e paredes delgadas são amplamente utilizados em estruturas metálicas. Estes elementos têm, em geral, baixa rigidez a torção. Para seções monosimétricas e assimétricas, quando o centro de cisalhamento não coincide com o centro de gravidade, pode ocorrer acoplamento entre flexão e torção. Devido à baixa rigidez à torção, podem ocorrer grandes rotações das seções transversais da viga. Assim, uma análise do comportamento de tais elementos estruturais, levando em consideração a não linearidade geométrica, é desejável. Com este objetivo, equações diferenciais parciais de movimento que descrevem o acoplamento flexão-flexão-torção são utilizadas, em conjunto com o método de Galerkin, para se obter um conjunto de equações discretizadas de movimentos, que é resolvido pelo método Runge-Kutta. A partir das equações linearizadas, obtêm-se as frequências naturais, cargas críticas axiais e a relação entre carga axial e frequência para vigas com diferentes condições de contorno. A seguir, estudam-se as oscilações não lineares e bifurcações de uma viga engastada-livre submetida a cargas laterais harmônicas. Uma análise paramétrica detalhada, usando várias ferramentas de dinâmica não linear, investiga o comportamento dinâmico não linear e não planar da viga nas três primeiras regiões de ressonância e a influência da não linearidade, posição do carregamento, restrições à torção e parâmetros de controle do carregamento na estabilidade dinâmica da estrutura.
Structural elements with open and thin-walled section are widely used in metal structures. These elements have, in general, low torsional stiffness. For monosymmetric and asymmetric sections, when the shear center does not coincide with the center of gravity coupling between bending and torsion may occur. Due to the low torsional stiffness, large twist beam cross sections may arise. Thus, an analysis of the behavior of such structural elements, taking into account the geometric nonlinearity, is desirable. For this purpose, partial differential equations describing the flexural-flexural-torsional coupling are used in conjunction with the Galerkin method to obtain a set of discretized equations of motion, which is solved by the Runge-Kutta method. From the linearized equations, we obtain the natural frequencies, axial critical loads, and the axial load and frequency relationship for beams with different boundary conditions. Next, we study the nonlinear oscillations and bifurcations of a clamped-free beam subjected to harmonic lateral loads. A detailed parametric analysis, using various nonlinear dynamics tools, investigates the nonlinear dynamic behavior and nonplanar motions of the beam for the first three regions of resonance and the influence of the non-linearity, loading position, torsional restraints and load control parameters on the dynamic stability of the structure.
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4

Akman, Mehmet Nazim. "Analysis Of Thin Walled Open Section Tapered Beams Using Hybrid Stress Finite Element Method." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/2/12609246/index.pdf.

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In this thesis, hybrid stress finite element is formulated for the analysis of the isotropic, thin walled, open section beams with variable cross sections. The beam element has two nodes each having seven degrees of freedom. Assumption of stress field is sufficient to determine the element stiffness matrix. Axial, flexural and torsional effects are taken into account in the analysis. The methodology can be applied both to the tapered and the uniform beams. Throughout this study, firstly element cross-sectional properties are computed using the flow analogy of the inter-connected elements which may have different thicknesses. Then another computer program calculates the displacements and stresses at the nodes along the beam. The results obtained are compared to the results taken from literature and commercial FEM program Nastran.
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5

Nanayakkara, Masarachige A. "Finite element analysis for the elastic stability of thin walled open section columns under generalized loading." Thesis, Loughborough University, 1986. https://dspace.lboro.ac.uk/2134/7501.

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The current interest in collapse characteristics brought about by crashworthiness requirements ýas shown the need for a better understanding and predictive capability for the thin walled open section structures. In general three possible modes exist in which a loaded thin walled open section column can buckle: 1) they can bend in the plane of one of the principal axes; 2) they can twist about the shear. centre; 3) or they can bend and twist simultaneously. The following study was undertaken to investigate the general failure of thin walled open section structures. A literature survey was conducted and it prevailed that a basic fundamental theoretical study was vital in describing the behaviour of thin walled structural members. The following stages of theoretical study have been completed: 1) Formulation of the stiffness matrix to predict the generalised force-displacement relationships assuming the small displacement theory in the linear elastic range. 2) Formulation of the geometric stiffness matrix to predict the buckling criteria under generalised loading and end constraints in the linear elastic range. 3) Formulation of the compound coordinate transformation matrix to relate local and global displacements or forces. 4) Preparation of the associated finite element computer program to solve general thin walled open sections structural problems.
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6

Jrad, Wassim. "Dynamic behavior of thin-walled beams : Analytical, numerical and experimental approaches." Electronic Thesis or Diss., Université de Lorraine, 2019. http://www.theses.fr/2019LORR0271.

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Les poutres à parois minces à sections ouvertes sont des éléments de base des ouvrages courants en génie civil, de l'automobile et de l'aéronautique. En raison de leur élancement et la forme des sections, elles sont très sensibles à la torsion et aux instabilités aussi bien en statique qu’en dynamique. En dynamique, les modes de vibration en torsion sont plus dominants par rapport au modes de flexion classiques. Pour ces raisons, les défaillances planaires de telles structures sont connues pour être une exception plutôt qu'une règle. Dans ce travail de thèse, on s’intéresse au comportement dynamique de poutres à parois minces et à section ouvertes arbitraires. En se basant sur le modèle de Vlasov qui prend en compte de la torsion et du gauchissement, les équations de mouvement 3D sont dérivées à partir du principe d’Hamilton. Des solutions analytiques originales pour différentes conditions aux limites sont dérivées pour des modes supérieurs en vibrations libres. Dans ces solutions, les effets des termes de rotation inertiels en flexion et torsion sont pris en compte. Pour des cas généraux, un modèle élément fini de poutre 3D est décrit et implémenté. Dans le modèle, un degré de liberté (ddl) est affecté au gauchissement. Toutes les matrices de rigidité masse de base sont calculées par intégration numérique (intégration de Gauss). Dans le modèle, les calculs en vibrations libres et forcées sont possibles. Le modèle est validé par comparaison aux solutions numériques et expérimentaux de la littérature. Une comparaison aux simulations des codes commerciaux est aussi suivie. Afin de valider le modèle théorique et numérique utilisé, une campagne d’essais a été suivie au LEM3 à Metz. Des essais de vibration libre et forcée sont effectués sur des poutres à parois minces avec différentes conditions aux limites. Les solutions analytiques, numériques et les mesures expérimentales sont comparées et validées. Un bon accord entre les différentes solutions est constaté. Le modèle est étendu aux poutres 3D retenues latéralement par des entretoises. Des ressorts élastiques et visqueux 3D sont ajoutés dans le modèle numérique. L'effet des entretoises est étudié dans le but d’améliorer le comportement des poutres à parois minces vis-à-vis des modes indésirables de type flexion latérale et torsion
Thin-walled beams with open section constitute main elements in engineering applications fields as in civil engineering, automotive and aerospace construction. Due to slenderness and cross section shapes, these elements are very sensitive to torsion and instabilities in both statics and dynamics. In dynamics, the torsional and flexural-torsional modes of vibration are often lower frequencies compared to the classical plane pure bending modes. Thus, planar failures of such structures are known to be an exception rather than a rule. In torsion, warping is important and governs the behavior. In this thesis work, we are interested with the dynamic behavior of thin-walled beams with arbitrary open cross sections. Based on the Vlasov’s model accounting for warping, the 3D motion equations are derived from the Hamilton’s principle. Original analytical solutions for different boundary conditions are derived for higher free vibration modes. In these solutions, the effects of the inertial rotation terms in bending and torsion are taken into consideration. For more general cases, a 3D beam finite element model is described and implemented. Compared to conventional 3D beams, warping is considered as an additional Degree Of Freedom (DOF). The mass and stiffness matrices are obtained by numerical integration (Gauss method). In the model, free and forced vibration analyses are possible. The model is validated by comparison with benchmark solutions available in the literature and other numerical results obtained from simulation on commercial codes. In order to validate the present model, laboratory test campaign is undertaken at the LEM3 laboratory in Metz. Tests are carried out on thin-walled beams with different boundary conditions. Free and forced vibration tests are performed using impact hammer and shaker machine. In the presence of arbitrary sections, flexural-torsional vibration modes are observed. The analytical, the numerical and the experimental solutions are compared and validated. Moreover, the numerical and experimental dynamic response spectra are compared. A good agreement between the various solutions is remarked. The model is extended to 3D beams in presence of lateral braces. 3D elastic and viscous springs are added in the finite element model. The effect of the springs is studied in order to improve the behavior of thin-walled beams against undesirable lateral bending and torsion modes
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7

NITTI, GIUSEPPE. "Static, Dynamic, and Stability Analysis of High-rise Buildings." Doctoral thesis, Politecnico di Torino, 2020. http://hdl.handle.net/11583/2847156.

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8

Geara, Fadi. "Contribution à l'étude de la torsion des poutres en voiles minces et des poutres à profil dissymétrique." Châtenay-Malabry, Ecole centrale de Paris, 1998. http://www.theses.fr/1998ECAP0598.

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Анотація:
Cette recherche est une contribution à l'étude de la torsion des poutres en voiles minces ouverts et des poutres à sections transversales non symétriques. En effet, dans le cas des poutres en voiles minces ouverts, on a développé la statique de la torsion suivant la théorie de Vlassov, c'est-à-dire en tenant compte du gauchissement qui accompagne en général la torsion, et ses effets sur les éléments de structure. Notre travail commence par la résolution de l'équation différentielle de la torsion gênée pour diverses conditions aux limites et différents chargements. Des exemples numériques ont concrétisé l'importance de la prise en compte du gauchissement dans le cas des éléments minces. L'étude a été complétée par la formulation de la poutre continue soumise à la torsion et par une étude numérique comparative avec la méthode des éléments finis en utilisant une modélisation en éléments coques et montrant la concordance entre les deux méthodes. D'autre part, dans le cas des poutres a profil dissymétrique, le centre de torsion n'est pas en général confondu avec le centre de gravité. Notre travail était de prendre en compte cette excentricité et d'introduire son effet dans la matrice de rigidité d'un élément de poutre droite, ainsi que ses effets sur les sollicitations et les déplacements des éléments de structure. L'étude a été complétée par plusieurs exemples schématisant l'intérêt de l'utilisation de la matrice de rigidité modifiée.
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9

Chuang, Shih-Wei, and 莊士緯. "Nonlinear analysis of bisymmetric thin-walled open-section Timoshenko beam." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/12221150682211743504.

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Анотація:
碩士
國立交通大學
機械工程系所
102
A consistent co-rotational total Lagrangian finite element formulation for the geometric nonlinear buckling and postbuckling analysis of bisymmetric thin-walled Timoshenko beams is presented. The element developed here has two nodes with seven degrees of freedom per node. The element nodes are chosen to be located at the centroid of the end cross-sections of the beam element and the axis of centroid is chosen to be the reference axis. The deformations of the beam element are described in the current element coordinate system constructed at the current configuration of the beam element. The exact kinematics of the Timoshenko beam is considered. The element nodal forces are derived using the virtual work principle with the consideration of the shear correction factor. The virtual rigid body motion corresponding to the virtual nodal displacements is excluded in the derivation of the element nodal forces. A procedure is proposed to determine the virtual rigid body motion. A consistent second-order linearization of the element nodal forces is used here. Thus, all coupling among bending, shearing, twisting, and stretching deformations of the beam element is retained. In the derivation of the element tangent stiffness matrix, the change of element nodal forces induced by the element rigid body rotations should be considered for the present method. Thus, a stability matrix is included in the element tangent stiffness matrix. An incremental-iterative method based on the Newton–Raphson method combined with constant arc length of incremental displacement vector is employed for the solution of nonlinear equilibrium equations. The zero value of the tangent stiffness matrix determinant of the structure is used as the criterion of the buckling state. A bisection method of the arc length is used to find the buckling load. Numerical examples are studied and compared with the results obtained by using Euler beam element to demonstrate the accuracy and efficiency of the proposed method and to investigate the effect of the shear deformation on the loading–deflection curves and buckling load of the bisymmetric thin-walled beams.
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10

Lin, Chun-Li, and 林群禮. "Nonlinear dynamic analysis of bisymmetric thin-walled open-section Timoshenko beam." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/30446213549429090991.

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Анотація:
碩士
國立交通大學
機械工程系所
103
A co-rotational finite element formulation for the nonlinear dynamic analysis of bisymmetric thin-walled Timoshenko beams is presented. The element deformation nodal force and tangent stiffness matrix are derived by consistent co-rotational formulation. The element inertia nodal force and inertia matrix are derived by co-rotational total Lagrangian formulation. The element developed here has two nodes with seven degrees of freedom per node. The element nodes are chosen to be located at the centroid of the end cross-sections of the beam element and the axis of centroid is chosen to be the reference axis. A rotation vector is used to represent the finite rotation of coordinate systems rigidly tied to each node of the discretized structure. The incremental nodal displacement vectors and rotation vectors in global coordinates are used to update the node locations and orientation of the element. The deformations of the beam element are described in the current element coordinate system constructed at the current configuration of the beam element. Three rotation parameters are defined to describe the relative orientation between the element cross section coordinate system rigidly tied to the unwrapped cross section and the current element coordinate system. The exact kinematics of the Timoshenko beam is considered. The element deformation nodal forces and inertia nodal forces are derived using the nonlinear beam theory, d’Alembert principle, virtual work principle, and consistent second degree linearization at the current coordinate of the beam element. The terms up to the second order of spatial derivatives of deformation parameters are retained in the element deformation nodal forces, and the terms up to the second order of time derivatives of deformation parameters are retained in the element inertia nodal forces. However, the coupling between deformation parameters and their time derivatives are not considered in the element inertia nodal forces. The element tangent stiffness matrix is derived using the relations between the variation of the element nodal displacement vectors and rotation vectors and the corresponding variation of element nodal forces. The element inertia matrices may be obtained by differentiating the element inertia nodal forces with respect to the first and second time derivatives of the element nodal parameters. An incremental-iterative method based on the Newmark direct integration method and the Newton-Raphson method are employed here for the solution of the nonlinear equations of motion. Numerical examples are presented to demonstrate the accuracy and efficiency of the proposed method.
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Книги з теми "Thin-walled open-section"

1

Nanayakkara, M. A. Finite element analysis for the elastic stability of thin walled open section columns under generalized loading. 1986.

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Частини книг з теми "Thin-walled open-section"

1

Rossikhin, Yury A., and Marina V. Shitikova. "Engineering Theories of Thin-Walled Beams of Open Section." In SpringerBriefs in Applied Sciences and Technology, 3–17. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-20969-7_2.

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2

Rossikhin, Yury A., and Marina V. Shitikova. "Peculiarities of Transient Wave Propagation in Thin-Walled Beams of Open Section." In SpringerBriefs in Applied Sciences and Technology, 81–86. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-20969-7_6.

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3

Cammarano, Sandro, Giuseppe Lacidogna, Bartolomeo Montrucchio, and Alberto Carpinteri. "Experimental Evaluation of the Warping Deformation in Thin-Walled Open Section Profiles." In Advancement of Optical Methods in Experimental Mechanics, Volume 3, 231–42. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-06986-9_26.

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4

Malinowski, M. "Lateral Buckling of Sandwich Beams of Arbitrary Open Cross Section." In Thin-Walled Structures, 687–92. CRC Press, 2018. http://dx.doi.org/10.1201/9781351077309-78.

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5

PIGNATARO, M., N. RIZZI, and A. LUONGO. "THIN-WALLED BEAMS WITH OPEN CROSS-SECTION." In Stability, Bifurcation and Postcritical Behaviour of Elastic Structures, 217–73. Elsevier, 1991. http://dx.doi.org/10.1016/b978-0-444-88140-3.50013-0.

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6

"Thin-walled structures with an open cross section." In Crush Mechanics of Thin-Walled Tubes, 255–82. CRC Press, 2015. http://dx.doi.org/10.1201/b19257-6.

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7

Magnucka-Blandzi, E., R. Krupa, and K. Magnucki. "Shaping of open cross section of the thin-walled beam with flat web and multiplate flange." In Thin-Walled Structures - Advances and Developments, 567–73. Elsevier, 2001. http://dx.doi.org/10.1016/b978-008043955-6/50062-8.

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8

Bamonte, Patrick, Roberto Felicetti, Pietro G. Gambarova, and Ezio Giuriani. "Thin-walled open-section P/C beams in fire: a case study." In fib Bulletin 57. Shear and punching shear in RC and FRC elements Technical report, 173–94. fib. The International Federation for Structural Concrete, 2010. http://dx.doi.org/10.35789/fib.bull.0057.ch11.

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9

"Transient Dynamic Response of Spatially Curved Thermoelastic Thin-Walled Beam of Open Section." In Encyclopedia of Thermal Stresses, 6164. Dordrecht: Springer Netherlands, 2014. http://dx.doi.org/10.1007/978-94-007-2739-7_100773.

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10

Kolakowski, Z., R. J. Mania, and A. Teter. "Influence of elements of coupling stiffness sub-matrix on nonlinear stability FGM-FML thin-walled columns with open cross-section." In Shell Structures: Theory and Applications Volume 4, 247–50. CRC Press, 2017. http://dx.doi.org/10.1201/9781315166605-54.

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Тези доповідей конференцій з теми "Thin-walled open-section"

1

Li, Yang, and Zhong You. "Thin-Walled Open-Section Origami Beams for Energy Absorption." In ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/detc2014-35204.

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Анотація:
Thin-walled beams with open-section are extensively employed as energy absorption structures in transportation system, e.g., automobile bumper beams and guardrails. However, during the crushing process of these traditional open-section structures, local section flattening and lateral buckling of the webs always occur, which lead to a reduction on section-height, resulting in a significantly smaller bending resistance at the later stage of deformation and the formation of localized plastic hinges. This paper presents a novel design of high performance energy absorption beams using developable origami patterns. The origami beams overcome the problems associated with traditional open-section structures and they give nearly constant bending resistance during crushing process. Numerical analysis shows that the specific energy absorption (energy absorption per unit mass) of the origami beam is at least 20% higher in large deformation than that of the traditional thrie-beam which often used as guardrail. Our research finding demonstrates that utilising origami patterns to open-section beams can effectively alter their collapse modes, attain nearly constant bending resistance and achieve higher specific energy absorption.
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2

REHFIELD, LAWRENCE, and ALI ATILGAN. "On the buckling behavior of thin walled laminated composite open section beams." In 30th Structures, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1989. http://dx.doi.org/10.2514/6.1989-1171.

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3

Rozylo, Patryk, and Hubert Debski. "Progressive failure analysis of thin-walled composite structure with open cross-section." In COMPUTATIONAL TECHNOLOGIES IN ENGINEERING (TKI’2018): Proceedings of the 15th Conference on Computational Technologies in Engineering. Author(s), 2019. http://dx.doi.org/10.1063/1.5092010.

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4

Duan, Jin, and Yun-Gui Li. "About the Torsional Constant for thin-walled rod with open cross-section." In 2017 3rd International Forum on Energy, Environment Science and Materials (IFEESM 2017). Paris, France: Atlantis Press, 2018. http://dx.doi.org/10.2991/ifeesm-17.2018.43.

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5

Harursampath, Dineshkumar, Dewey Hodges, and Ajay Harish. "Non-Classical Non-Linear Effects in Thin Walled Open Section Composite Beams." In 49th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference
16th AIAA/ASME/AHS Adaptive Structures Conference
10t. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2008. http://dx.doi.org/10.2514/6.2008-2306.

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6

Harish, Ajay, and Dineshkumar Harursampath. "Analytical Solutions for Dynamic Behavior of Thin-Walled Open-Section Composite Beams." In 53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
20th AIAA/ASME/AHS Adaptive Structures Conference
14th AIAA. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2012. http://dx.doi.org/10.2514/6.2012-1872.

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7

Yu, Dianlong, Yaozong Liu, Jing Qiu, Gang Wang, and Jihong Wen. "Triply Coupled Vibration Band Gaps in Periodic Thin-Walled Open Cross Section Beams." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-79880.

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Анотація:
Triply coupled vibration through periodic thin-walled open cross section nonsymmetrical beams composed of two kinds of material is studied in this paper. Based on the triply coupled vibration equation, plane wave expansion method for the thin-walled beams is provided. If the filling fraction keeps constant, the lattice is one of the factors that affect the normalized gap width. If the lattice and filling fraction keep constant, the Young’s modulus contrast plays a fundamental role for the band gap width, but not density contrast. Finally, the frequency response of a finite periodic binary beam is simulated with finite element method, which provides an attenuation of over 20dB in the frequency range of the band gaps. The findings will be significant in the application of phononic crystals.
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8

Ogi, Yoshiro, and Ken Higuchi. "Dynamics of a Spin-Axis Extending Shaft of Thin-Walled Open Cross-Section." In 49th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference
16th AIAA/ASME/AHS Adaptive Structures Conference
10t. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2008. http://dx.doi.org/10.2514/6.2008-1955.

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9

Coaquira, Júlio C., Paulo B. Gonçalves, and Eulher C. Carvalho. "Dynamic Instability of Cantilever Beams With Open Cross-Section." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-65674.

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Анотація:
Structural elements with thin-walled open cross-sections are common in metal and composite structures. These thin-walled beams have generally a good flexural strength with respect to the axis of greatest inertia, but a low flexural stiffness in relation to the second principal axis and a low torsional stiffness. These elements generally have an instability, which leads to a flexural-flexural-torsional coupling. The same applies to the vibration modes. Many of these structures work in a nonlinear regime, and a nonlinear formulation that takes into account large displacements and the flexural-flexural-torsional coupling is required. In this work a nonlinear beam theory that takes into account large displacements, warping and shortening effects, as well as flexural-flexural-torsional coupling is adopted. The governing nonlinear equations of motion are discretized in space using the Galerkin method and the discretized equations of motion are solved by the Runge-Kutta method. Special attention is given to the nonlinear oscillations of beams with low torsional stiffness and its influence on the bifurcations and instabilities of the structure, a problem not tackled in the previous literature on this subject. Time responses, phase portraits and bifurcation diagrams are used to unveil the complex dynamic.
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10

CHEN, XIAOQIN, RAM MOHAN, and KUMAR TAMMA. "Instantaneous response of elastic thin-walled structures with arbitrary open cross section to rapid heating." In 33rd Structures, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1992. http://dx.doi.org/10.2514/6.1992-2544.

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