In this paper, an alternative meshfree approach is presented for transient heat conduction analysis of nonlinear functionally graded materials (FGMs). The main idea behind the introduced to use collocation in local domains containing sets regular or scattered nodes and approximating solution by B-spline basis functions. It combines favorable properties functions having arbitrary degree better resolution solution, partition unity Kronecker delta with low computational effort collocation....

The study of interaction between microwave radiation and minerals is gaining increasing interest in the field material processing. Further studies are, however, still required to deepen understanding such heating mechanisms order develop innovative techniques for mineral treatment using heating. In this paper, effects sample shapes thickness on distribution temperature inside ilmenite (FeTiO3) due were numerically studied finite element (FE) method. analysis was carried out a way that flux...

This paper presents a new approach of meshless local B-spline based finite difference (FD) method for transient 2D heat conduction problems with nonhomogenous and time-dependent sources. In this method, any governing equations are discretized by approximation which is implemented as generalized FD technique using collocation scheme. The key aspect the that derivative stated neighboring nodal values on interpolants. set nodes allowed to be randomly distributed. allows enhanced flexibility...

Purpose – The purpose of this paper is to present a new approach meshless local B-spline based finite difference (FD) method for solving two dimensional transient heat conduction problems. Design/methodology/approach In the method, any governing equations are discretized by approximation which implemented in spirit FD technique using collocation scheme. key aspect that derivative stated as neighbouring nodal values on interpolants. set nodes allowed be randomly distributed thus enhanced...

In this paper, an over-determined, global collocation method based upon B-spline basis functions is presented for solving boundary value problems in complex domains. The was truly meshless approach, hence simple and efficient to programme. the method, any governing equations were discretised by approximation as interpolants. As interpolating chosen, present also posed Kronecker delta property allowing conditions be incorporated efficiently. showed high accuracy elliptic partial differential...

In this paper, a meshfree approach based on moving kriging interpolation is presented for numerical solution of coupled reaction-diffusion problems. The proposed developed upon local collocation using Kriging shape function. It truly meshless and having the Kronecker delta property accurate imposition boundary conditions. model, weight function used with correlation parameter treated as model internal length factor. This produces method improved accuracy together an ease to choose can hence...

Delamination or interlaminar fracture often occurs in composite laminate due to several factors such as high stress, stress concentration, impact well imperfections manufacturing processes. In this study, finite element (FE) simulation of mode I delamination double cantilever beam (DCB) specimen carbon fiber/epoxy HTA/6376C is investigated using cohesive zone model (CZM). 3D geometry DCB developed ANSYS Mechanical software and 8-node interface elements with bi-linear formulation are employed...

Neural networks (NN) have been widely used in application of fatigue life prediction. In the use prediction for polymeric-base composite, development NN model is necessary with respect to limited data and applicable be predict under varying stress amplitudes different ratios. present paper, Multilayer-Perceptrons (MLP) neural network developed, Genetic Algorithm was employed optimize respective weights composite materials variable amplitude loading. From simulation result obtained two...

Welding sequence is one important factor which affects the residual stresses and distortions produced during welding, thus determines welding quality performance. In this paper, 3D numerical simulation of temperature distribution, T-joint fillet weld with respect to variation presented. The finite element involved thermo-mechanical analyses. Four sequences (WS) considered are direction (WS-1), contrary (WS-2), from centre side (WS-3) centres two sides (WS-4). results revealed that peak...

The composite based Zinc-doped in Chitosan/Hydroxyapatite was successfully prepared by wet mixing method through the addition of 10, 15, and 20wt% chitosan. Chitosan increased compressive strength modulus elasticity. However, it decreased density surface hardness HA-Zn. Mechanical characterization revealed that these composites are suitable as a candidate cancellous bone substitute. Composite with 10% chitosan has elasticity 57.03 MPa 0.15 GPa, respectively. Hence, physical mechanical...

Degradation of the casing strength in relation with thermal cycles steam injection process is still less explored literature. In this paper, three-dimensional finite element (FE) analysis degradation environment wells presented. 3D FE models consisting casing-cement-formation system are developed study. Grade N80 employed length 3.048 m. analysis, cyclic stresses induced on from 25 °C to 360 first examined verify feasibility models. subsequently investigated by applying an external pressure...

In the present paper, neural networks (NN) with non-linear auto-regressive exogenous inputs (NARX) structure is developed and further applied for material lifetime assessment application. Rational of use NARX in application was emphasized linked to concept constant life diagram (CLD), well known fatigue analysis design. Fatigue then performed realized as one-step ahead prediction respect each stress level corresponding ratio values arranged such a way that transition took place from region...

Low pressure boiler feed pump (LPBFP) merupakan salah satu komponen penting dalam sistem Heat Recovery Steam Generator (HRSG), pada pengoperasiannya sering terjadi permasalahan yaitu patahnya poros yang dapat 8-10 kali setahun mungkin disebabkan oleh faktor getaran. Untuk itu penelitian ini dilakukan perhitungan dengan pemodelan metode elemen hingga menggunakan software ANSYS untuk menghitung frekuensi natural dan modus getaran 10 pertama LPBFP. Dari hasil simulasi didapatkan nilai orde...

research in the field of biomechanics related to orthopedic implants is rapidly growing world, especially for fixation fractured bone. Fixation a surgery locate and attach plate pressed by screws at Most fracture bones sited femur. This focuses on modeling simulation screw made SS316L material femur using finite element method (FEM). with good biocompatibility, cheap, ductile enough. Modeling done ANSYS 15.0 software. Simulation results are stress, strain, total deformation. It obtained that...