Engineering Computations: Volume 32 Issue 5

Optimizing parameters of support vector machines using team-search-based particle swarm optimization

Long Zhang, Jianhua Wang

It is greatly important to select the parameters for support vector machines (SVM), which is usually determined by cross-validation. However, the cross-validation is very…

An ensemble evolutionary approach in evaluation of surface finish reduction of vibratory finishing process

Akhil Garg, Venkatesh Vijayaraghavan, Kang Tai, Pravin M Singru, Liang Gao, K S Sangwan

The functioning of multi-gene genetic programming (MGGP) algorithm suffers from the problem of difficulty in model selection. During the preliminary analysis, it is observed that…

Modeling creep in a variable thickness rotating FGM disc under varying thermal gradient

Manish Garg, B S Salaria, V K Gupta

– The purpose of this paper is to investigate steady state creep behavior of a functionally graded rotating disc under varying thermal gradient (TG).

A locking-free coupled polynomial Timoshenko piezoelectric beam finite element

Litesh N Sulbhewar, P. Raveendranath

Piezoelectric extension mode smart beams are vital part of modern control technology and their numerical analysis is an important step in the design process. Finite elements based…

Numerical solutions of two-dimensional Burgers’ equations using modified Bi-cubic B-spline finite elements

R C Mittal, Amit Tripathi

The purpose of this paper is to develop an efficient numerical scheme for non-linear two-dimensional (2D) parabolic partial differential equations using modified bi-cubic B-spline…

Thermomechanical effect of vertical well drilling in salt rocks in selected cases

William Wagner Matos Lira, Giancarlo de Gusmão Gonçalves, Catarina Nogueira Araujo, Adeildo Soares Ramos Junior, Alejandro César Frery

– The purpose of this paper is to present an analysis of the effect of the temperature on the creep deformation during vertical well drilling in salt rocks in selected cases.

CFD investigation of inlet pressure effects on the energy separation in a vortex tube with convergent nozzles

Nader Pourmahmoud, Masoud Rashidzadeh, Amir Hassanzadeh

The purpose of this paper is to investigate the effect of convergent nozzles on the thermal separation inside a vortex tube, using a three-dimensional (3D) computational fluid…

Recursive parameter estimation for load sensing proportional valve based on polynomial chaos expansion

Zeyu Ma, Jinglai Wu, Yunqing Zhang, Ming Jiang

The purpose of this paper is to provide a new computational method based on the polynomial chaos (PC) expansion to identify the uncertain parameters of load sensing proportional…

Numerical simulation of EPS geofoam behaviour in triaxial tests

Sanka Dilshan Ekanayake, D.S. Liyanapathirana, Chin Jian Leo

EPS geofoam has been widely used in embankment construction, slope stabilisation, retaining walls, bridge approaches and abutments. Nevertheless, the potential of EPS geofoam as…

A polygonal-FEM technique in modeling large sliding contact on non-conformal meshes: A study on polygonal shape functions

Amir R. Khoei, R. Yasbolaghi, S.O.R. Biabanaki

In this paper, the polygonal-FEM technique is presented in modeling large deformation – large sliding contact on non-conformal meshes. The purpose of this paper is to present a…

Some modifications for ES-FEM and its application for vehicle design

Guanxin Huang, Hu Wang, Guangyao Li

– The purpose of this paper is to enhance the feasibility of the edge-based smoothed triangular (EST) element, some modifications are made in this study.

Quick finite volume solver for incompressible Navier-Stokes equation by parallel Gram-Schmidt process based GMRES and HSS

Di Zhao

The purpose of this paper is to develop Triple Finite Volume Method (tFVM), the author discretizes incompressible Navier-Stokes equation by tFVM, which leads to a special linear…

A simplified and efficient hybrid finite element model (HYMOD) for non-linear 3D simulation of RC structures

George Markou, Manolis Papadrakakis

The purpose of this paper is to present a simplified hybrid modeling (HYMOD) approach which overcomes limitations regarding computational cost and permits the simulation and…