The scientific importance of nanocomposites are being increased due to their improvedproperties. This paper is divided into two parts. First, Al-Al2O3 nanocomposite wasproduced by using ball milling technique followed by cold compaction and sintering.Microstructure and morphology studies were done through SEM, TEM, and EDX anal-ysis on the produced powder. The mechanical properties of the produ...

The development of automotive safety systems is moving towards an integration of systems that are active before and during an impact. Consequently, there is a need to make a combined analysis of both the pre-crash and the in-crash phases, which leads to new requirements for Human Body Models (HBMs) that today are used for crash simulations. In the pre-crash phase the extended duration makes the...

There are many kinds of deformable objects in our living life. Some of them demonstrate rheological behaviors, such as human tissues, food, and clay. Comparing with elastic or viscoelastic objects, rheological objects have not been studied intensively. Especially, effective methods for parameter identification have not been established until now. In this paper, we summarize two FE dynamic model...

A way to manage the information needed during the FE simulation model preparation is by means of attributes linked to the adopted models. This paper presents the design and implementation of an attribute management system that supports the representation of all the information and data related to the simulation domain definition, needed to qualify an engineering analysis. The main objective of ...

The measurement and numerical modelling of ultrasonic wave scattering is essential for detecting complex defects in safety critical components for engineering structures across a range of industries. Fast and accurate numerical modelling to simulate candidate set ups for Non-Destructive Evaluation (NDE) is attractive as it both improves confidence in the inspection results and reduces the cost ...

This paper is concerned with the thermal models which can physically reflect the heat-flow paths in a lightweight three-phase half bridge, two-level SiC power module with 6 MOSFETs and can be used for coupled electro-thermal simulation. The finite element (FE) model was first evaluated and calibrated to provide the raw data for establishing the physical RC network model. It was experimentally ...

Laser bending is an advanced process in sheet metal forming in which a laser heat source is used to shape the metal sheet. In this paper, temperature distribution in a mild steel sheet metal is investigated numerically and experimentally. Laser heat source is applied through curved paths in square sheet metal parts. Finite element (FE) simulation is performed with the ABAQUS/CAE standard softwa...

kinetic monte carlo simulation was applied to investigation of kinetics and mechanism of oxalic acid degradation by direct and heterogeneous catalytic ozonation. la-containing perovskites including lafeo3, lanio3, lacoo3 and lamno3 was studied as catalyst for oxalic acid ozonation. the reaction kinetic mechanisms of each abovementioned catalytic systems has been achieved. the rate constants val...

We use atomistic computer simulation techniques to investigate the site partitioning of iron in (Mg,Fe)SiO 3 perovskites. Our calculations predict that the most energetically favourable reaction for iron substitution will be a direct exchange ofFe 2+ for Mg 2+. Substitution f Fe into the octahedral site and Si into the 8-12 fold coordinated site, as proposed by Jackson et al. [1987], is predict...

A finite element methodology has been developed for predicting the behaviour of honeycomb structures. Dynamic analysis of hexagonal aluminium honeycomb structures is carried out using PAM-CRASH, an explicit FE analysis code, and the result are verified against experimental data. Relationship between the crushing behaviour of honeycomb and simulation parameters has been established. The simulati...