Dynamic Analysis of Fracture in Thin-Walled Pipes

2011 ◽  
Vol 133 (6) ◽  
Author(s):  
C. Gato ◽  
Y. Shie
Keyword(s):  
Dynamic Analysis ◽  
Dynamic Fracture ◽  
Meshfree Method ◽  
Meshfree Methods ◽  
Shape Functions ◽  
Order Continuity ◽  
Cylindrical Structures ◽  
Thin Walled Structures ◽  
Ill Conditioning ◽  
Thin Walled

Dynamic fracture of thin-walled cylindrical structures is studied with a large deformation meshfree method. Due to the higher order continuity and smoothness of the shape functions, meshfree methods are well suited to simulate dynamic fracture of thin-walled structures since they avoid ill-conditioning as well as stiffening in numerical computations. Simulations of detonation driven fracture in thin pipes demonstrate the efficiency of the method.

Dynamic analysis of partially prismatic thin-walled structures

1987 ◽  
Vol 5 (1) ◽  
pp. 39-54 ◽  
Author(s):  
T.R.Graves Smith ◽  
B.D. Walker
Keyword(s):  
Dynamic Analysis ◽  
Thin Walled Structures ◽  
Thin Walled

Free Vibration Analysis of Thin-Walled Cylinders Reinforced With Longitudinal and Transversal Stiffeners

2013 ◽  
Vol 135 (1) ◽  
Author(s):  
E. Carrera ◽  
E. Zappino ◽  
M. Filippi
Keyword(s):  
Degrees Of Freedom ◽  
Free Vibration Analysis ◽  
The Finite Element Method ◽  
Cylindrical Structures ◽  
One Dimensional ◽  
Computational Costs ◽  
Thin Walled Structures ◽  
Carrera Unified Formulation ◽  
Thin Walled ◽  
Good Agreement

This paper deals with the dynamic analysis of reinforced thin-walled structures by means of refined one-dimensional models. Complex reinforced structures are considered which are built by using different components: skin, ribs, and stringers. Higher-order one-dimensional model based on the Carrera unified formulation (CUF) are used to model panels, stringer, and ribs by referring to a unique model. The finite element method (FEM) is used to provide a solution that deals with any boundary condition configuration. The structure is geometrically linear and the materials are isotropic and elastic. The dynamic behavior of a number of reinforced thin-walled cylindrical structures have been analyzed. The effects of the reinforcements (ribs and stringers) are investigated in terms of natural frequencies and modal-shapes. The results show a good agreement with those from commercial codes by reducing the computational costs in terms of degrees of freedom (DOFs).

The dynamic analysis of stochastic thin-walled structures under thermal–structural–acoustic coupling

2019 ◽  
Vol 65 (3) ◽  
pp. 609-634
Author(s):  
Juan Ma ◽  
Bei Liu ◽  
Peter Wriggers ◽  
Wei Gao ◽  
Bin Yan
Keyword(s):  
Dynamic Analysis ◽  
Acoustic Coupling ◽  
Thin Walled Structures ◽  
Thin Walled

scholarly journals Experimental and Numerical Analysis of a Composite Thin-Walled Cylindrical Structures with Different Variants of Stiffeners, Subjected to Torsion

Materials ◽  
2019 ◽  
Vol 12 (19) ◽  
pp. 3230 ◽  
Author(s):  
Tomasz Kopecki ◽  
Przemysław Mazurek ◽  
Tomasz Lis
Keyword(s):  
Numerical Analysis ◽  
Numerical Analyses ◽  
Modified Model ◽  
Cylindrical Structures ◽  
Local Loss ◽  
Thin Walled Structures ◽  
Non Linear ◽  
Thin Walled ◽  
Distribution Of Stress ◽  
The Impact

The aim of the study was to determine the impact of the use of isogrid stiffeners on the stress and displacement distribution of a thin-walled cylindrical shell made of layered composites subjected to torsion. It also strives to define criteria for assessing the results of non-linear numerical analysis of models of the examined structures by comparing them with the results of the model experiment. The study contains the results of experimental research using models made of glass–epoxy composites and the results of numerical analyses in non-linear terms. The experiment was carried out using a special test stand. The research involved two types of considered structures. The results of the research allowed to create the concept of an adequate numerical model in terms of the finite element method, allowing to determine the distribution of stress and strain in the components of the studied structures. Simultaneously, the obtained conformity between the results of non-linear numerical analyses and the experiment allows to consider the results of analyses of the modified model in order to determine the properties of different stiffening variants as reliable. The presented research allows to determine the nature of the deformation of composite thin-walled structures in which local loss of stability of the covering is acceptable in the area of post-critical loads.

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