The effect on raft foundation of a barrage due to varying stratum has been examined using finite element analysis. The raft foundation is completely resting on soil media and surrounded by soil and rock media. Eight noded brick elements have been used for three-dimensional modeling and meshing of the rock, soil, cut-off, pier, beam and abutment but raft foundation has been meshed using plate el...

An 8-node quadrilateral plane element US-QUAD8 is developed for linear isotropic hardening material in the framework of updated Lagrangian unsymmetric finite formulation where B L matrix constructed by classical shape function, and R higher-order basis function global coordinate system. The present eliminates influence Jacobian elemental stiffness guarantees quadratic completeness displacement ...

saccharomyces cerevisiae (baker’s yeast) can exhibit sustained oscillations during the operation in a continuous bioreactor that adversely affects its stability and productivity. because of heterogeneous nature of cell populations, the cell population balance equation (pbe) can be used to capture the dynamic behavior of such cultures. in this work, an unstructured-segregated model is used for d...

This paper discusses two approaches to modeling helical suspension springs for use in a dynamic finite element compressor model. The first approach represents the spring's stiffness characteristics with a simple spring element matrix. The appropriate spring constants are calculated using a separate finite element model of the spring. The spring modeling procedure is described and supplemented w...

Historically, nondestructive testing (NDT) has been used for detecting macroscopic and microscopic discontinuities in structures after they have been in service for some time or in new ones. The prominent role in nondestructive testing ultrasonic has won because of the application versatility, sensitivity and convenience. It has become evident that it is practical and cost effective to expand t...

The built up layer thickness in secondary deformation zone is one of the important parameters in metal cutting process. The built up layer (BUL) is formed in second deformation zone near the tool-chip interface in the back of the chip. This parameter influences the tool life and machined surface quality. This BUL should not be confused with the built up edge (BUE). The deformation of the BUL in...

Finite Element Analysis (FEA) is an important step for the design of structures or components formed by heterogeneous objects such as multi-materials, Functionally Graded Materials (FGMs), etc. The main objective of the FEA-based design of heterogeneous objects is to simultaneously optimize both geometry and material distribution over the design domain (e.g., Homogenization Design Method). Howe...

Reconstruction of images in Electrical Impedance Tomography (EIT) of brain function in the adult head benefits from the use of accurate numerical models, which may utilize meshes created by the Finite Element Method (FEM). Previously, these have been produced by manual segmentation and parametric representation of surfaces which were later meshed, but this was time consuming and required CAD sp...

Crystal plasticity finite element simulations require tremendous computation time and, accordingly, coarse mesh is generally used. To improve the texture prediction, Submodelling was applied to feature grains in this study. A simulation of Wholemodel (whole sample) firstly carried out obtain global texture, and then a smaller region from selected, reconstructed finely meshed Submodel. The movem...

A new instrument used for treating femoral head osteonecrosis was recently proposed: the umbrella-shaped, Ni-Ti memory femoral head support device. The device has an efficacy rate of 82.35%. Traditional radiographic study provides limited information about the mechanical behaviour of the support device during an implant operation. Thus, this study proposes a finite element analysis method, whic...