 There are increasing demands for measuring mechanical properties of small volumes of metal or smallsized materials used for Micro-Electro-Mechanical-Systems (MEMS). This is basically because such mechanical properties are closely related to the strength and reliability of the metal or systems. In this work, a nanoindentation technique with a spherical-tip is applied to the evaluation of elast...

This paper mainly studies the performance of axisymmetric radial interaction between soil and structure under stress. One key points is research on mechanical properties interface. The latter now frontier field, also focus this paper's theoretical analysis. Based FEM, a large-scale international finite element software, attempts to establish general comprehensive model with comparative function...

In order to study the damage evolution law of coal under seepage-stress coupling, this paper adopted rock servo triaxial test system conduct permeability for full stress-strain process on 10 sets specimens using steady-state method different confining pressure and osmotic pressure. The results show that has a small fluctuation before stress peak, increases substantially after peak. relationship...

The aim of the present study is the prediction of critical conditions (including critical strain and flow stress) for the initiation of dynamic recrystallization during thermo-mechanical processing of plain carbon steels. For this propose, torsion tests were conducted at different temperature (1050, 1100 and 1150˚C) and strain rates (0.002, 0.02 and 0.2/s). All flow curves showed a peak st...

The ductile performance of high strength steel (HSS) from different grades, producers, manufacturing processes varies a lot. It is also difficult to conduct all kinds reliable experiments generate stress status through initial specimen geometries or by applying load combinations in the civil engineering sector. One common issues for HSS structures identify parameters fracture model conveniently...

Background and Aim: Dental implants with angled abutments are often inserted in the anterior maxillary region due to the status of the residual ridge and aesthetic considerations. The purpose of this study was to assess stress and strain distributions in the premaxillary bone around dental implants by means of finite element analysis (FEA). Materials and Methods: Four three-dimensional (3D) fi...

background: cervical spine sustains most of thevertebral column injuries, among other injuries, the disc degeneration and damage that lead to replacement of the damaged disc with cage or artificial disc. methods: the c4 to c6 vertebrae of a normal subject and a person with interbody fusion cage were 3d modelled and then analyzed using finite element method. the results of maximum stress and str...

BACKGROUND To obtain a more detailed description of the stress-free state of the intestinal wall, longitudinal residual strain measurements are needed. Furthermore, data on longitudinal stress-strain relations in visceral organs are scarce. The present study aims to investigate the longitudinal residual strain and the longitudinal stress-strain relationship in the rat small intestine. METHODS...

Constitutive modeling of clay is an important research in geotechnical engineering. It is difficult to use precise mathematical expressions to approximate stress-strain relationship of clay. Artificial neural network (ANN) and support vector machine (SVM) have been successfully used in constitutive modeling of clay. However, generalization ability of ANN has some limitations, and application of...

On the basis of the representative samples of silty clay found in Wuhan, China, the lateral unloading of soil’s stress path produced by excavating foundation pit engineering, was simulated by triaxial experiment. A series of consolidated-drained true triaxial test and normal triaxial test were conducted. According to the results of tests, the parameter of the Duncan-Chang Model was determined. ...