Computational elastodynamics of functionally graded thick-walled cylinders and annular coatings subjected to pressure shocks

Date

2022-12-01

Author

Abeidi, Abdelrahim
Dağ, Serkan

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

138
views

0
downloads

A computational technique based on domain-boundary element method (D-BEM) is developed for elastodynamic analysis of functionally graded thick-walled cylinders and annular coatings subjected to pressure shock type of loadings. The formulation is built on the wave equation, which is derived in accordance with plane elastody-namics. Weighted residual statement for the wave equation is expressed by using the static fundamental solution as the weight function. Applying integration by parts and incorporating the boundary conditions, the problem is reduced to an integral equation. Problem domain is discretized by quadratic cells to transform the integral equation into a system of ordinary differential equations in time. Equation system is solved numerically applying Houbolt's method. Developed procedure is verified through comparisons to the analytical results available in the literature. Parametric analyses are carried out considering short-time ramp and exponential variation types of pressure shocks. Presented numerical results illustrate the influence of material property gradation on time histories and spatial distributions of displacement and stress components in FGM thick-walled cylinders and annular coatings.

Subject Keywords

Thick-walled cylinders, Annular coatings, Functionally graded materials, Elastodynamics, Domain-boundary element method, Pressure shock, STRESS INTENSITY FACTORS, BOUNDARY-ELEMENT METHOD, DYNAMIC-ANALYSIS, HOLLOW CYLINDERS, WAVE-PROPAGATION, BEAMS, VIBRATION, BEHAVIOR, SURFACE

URI

https://hdl.handle.net/11511/99978

Journal

INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING

DOI

https://doi.org/10.1016/j.ijpvp.2022.104824

Collections

Department of Mechanical Engineering, Article

Suggestions

OpenMETU
Core

Computational Methods for Inclined Cracks in Orthotropic Functionally Graded Materials Under Thermal Stresses Dağ, Serkan; TOPAL, SERRA (2013-10-03) This article sets forth two different computational methods developed to evaluate fracture parameters for inclined cracks lying in orthotropic functionally graded materials, that are under the effect of thermal stresses. The first method is based on the J(k)-integral, whereas the second entails the use of the J(1)-integral and the asymptotic displacement fields. The procedures introduced are implemented by means of the finite element method and integrated into a general purpose finite element analysis softw...
Thermal fracture analysis of orthotropic functionally graded materials using an equivalent domain integral approach Dağ, Serkan (2006-12-01) A new computational method based on the equivalent domain integral (EDI) is developed for mode I fracture analysis of orthotropic functionally graded materials (FGMs) subjected to thermal stresses. By using the constitutive relations of plane orthotropic thermoelasticity, generalized definition of the J-integral is converted to an equivalent domain integral to calculate the thermal stress intensity factor. In the formulation of the EDI approach, all the required thermomechanical properties are assumed to ha...
Numerical analysis of thermo-mechanical behavior in flow forming Günay, Enes; Fenercioglu, Tevfik Ozan; Yalçınkaya, Tuncay (2021-01-01) Flow forming is a metal forming process for cylindrical workpieces where high velocity deformation leads to radial thinning and axial extension. In the current study, a thermomechanical, dynamic and explicit finite element model of a flow forming process is developed on ABAQUS software. The model is validated through the comparison of reaction forces and geometry obtained from the experiments. Coolant convection effect is analyzed in conjunction with roller and mandrel conduction cooling to study the therma...
Dynamic analysis of beams with breathing crack using finite element method Özkan, Berkay; Kadıoğlu, Fevzi Suat; Department of Mechanical Engineering (2017) Non-linear dynamic characteristics of a beam with a breathing crack are investigated using finite element method. This thesis has two main objectives: (1) to obtain a foresight for the vibration based crack detection by using finite element method (2) to investigate the effects of crack location, crack depth, excitation frequency, excitation amplitude and boundary conditions on the indications of crack presence. Two dimensional finite element approach is used to model a square cross sectional beam subjected...
Computational modelling of carbon nanotube reinforced polymer composites Zuberi, Muhammad Jibran Shahzad; Esat, Volkan; Electrical and Electronics Engineering (2014-7) This thesis investigates the effects of chirality and size of single-walled carbon nanotubes (SWNTs) on the mechanical properties of both SWNTs and carbon nanotube reinforced epoxy composites (CNTRPs). First, a novel 3D beam element finite element model is developed based on equivalent-continuum mechanics approach and used for replacing C-C chemical bond for modelling SWNTs. The effects of diameter and chirality on the Young’s moduli, shear moduli, shear strains and Poisson’s ratios of SWNTs are studied. Fo...

Citation Formats

A. Abeidi and S. Dağ, “Computational elastodynamics of functionally graded thick-walled cylinders and annular coatings subjected to pressure shocks,” INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING, vol. 200, pp. 0–0, 2022, Accessed: 00, 2022. [Online]. Available: https://hdl.handle.net/11511/99978.