Study of the driving force for the self-assembly of heterojunction quantum dots (zero D molecules) using finite element analysis

2010 ◽  
Vol 28 (3) ◽  
pp. C3C33-C3C36 ◽  
Author(s):  
K. G. Eyink ◽  
L. Grazulis ◽  
M. Twyman ◽  
K. Mahalingam
Keyword(s):  
Finite Element Analysis ◽  
Quantum Dots ◽  
Finite Element ◽  
Self Assembly ◽  
Driving Force ◽  
The Self ◽  
Element Analysis

Estimation of Dynamic Mechanical Error for Evaluation of Machine Tool Structures

2012 ◽  
Vol 6 (2) ◽  
pp. 147-153 ◽  
Author(s):  
Daisuke Kono ◽  
◽  
Sascha Weikert ◽  
Atsushi Matsubara ◽  
Kazuo Yamazaki ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Machine Tool ◽  
Driving Force ◽  
Inertial Force ◽  
Element Analysis ◽  
Simple Method ◽  
Dynamic Mechanical ◽  
Machine Tool Structures ◽  
Multi Body

Dynamic motion errors of machine tools consist of errors in the mechanical system and the servo system. In this study, a simple method to estimate the dynamic mechanical error is proposed to evaluate machine tool structures. The dynamic mechanical error in the low frequency range is estimated from the static deformation due to the driving force, the counter force, and the inertial force. The error in a high-precision machine tool is estimated for comparison with measurements. Two calculation tools, finite element analysis and rigid multi-body simulation, are used for the estimation. Measured dynamic mechanical errors can be correctly estimated by the proposed method using finite element analysis. The tilt of driven bodies is the major reason for dynamic mechanical errors. When the reduction factor representing the structural deformation is properly determined, the rigid multi-body simulation is also an effective tool. Use of the proposed method for modification planning is demonstrated. Stiffness enhancement of the saddle was an effective modification candidate to reduce the dynamic mechanical error. If the error should be reduced to sub-micrometer level, the location of components should be modified because the Abbe offset and the offset of the driving force from the inertial force must be shortened.

Structure Design and Simulation of Lithium-Ion Battery Casing Machine

2014 ◽  
Vol 496-500 ◽  
pp. 683-687
Author(s):  
Qin Xiang Xia ◽  
Liang Bo Ji ◽  
You Xiang Li ◽  
Xiu Juan Liu ◽  
Zhi Wei Li ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Lithium Ion Battery ◽  
Lithium Ion ◽  
Structure Design ◽  
The Self ◽  
Motion Simulation ◽  
Element Analysis ◽  
Detailed Design

Considering the self-structure of lithium-ion battery and features of lithium-ion battery casing machine, the detailed design and analysis were carried on the components of lithium-ion battery casing machine. The motion simulation and finite element analysis were conducted by ADAMS and MARC software. The results show that the structure is practicable and the design is reasonable.

scholarly journals A Finite Element Analysis of a Crack Penetrating or Deflecting into an Interface in a Thin Laminate

2006 ◽  
Vol 312 ◽  
pp. 173-178 ◽  
Author(s):  
Sharon Kao-Walter ◽  
Per Ståhle ◽  
Shao Hua Chen
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Fracture Mechanics ◽  
Crack Growth ◽  
Driving Force ◽  
Crack Tip ◽  
Element Analysis ◽  
Linear Fracture ◽  
Finite Element Calculations ◽  
Straight Ahead

The crack tip driving force of a crack growing from a pre-crack that is perpendicular to and terminating at an interface between two materials is investigated using a linear fracture mechanics theory. The analysis is performed both for a crack penetrating the interface, growing straight ahead, and for a crack deflecting into the interface. The results from finite element calculations are compared with asymptotic solutions for infinitesimally small crack extensions. The solution is found to be accurate even for fairly large amounts of crack growth. Further, by comparing the crack tip driving force of the deflected crack with that of the penetrating crack, it is shown how to control the path of the crack by choosing the adhesion of the interface relative to the material toughness.

Flying Combustion Experiments and Numerical Simulation for Ti-B4C-C Agglomerated Particles during the Self-Reactive Spray Forming Process

2008 ◽  
Vol 368-372 ◽  
pp. 1686-1688 ◽  
Author(s):  
Jian Jiang Wang ◽  
Wen Bin Hu ◽  
Hong Wei Liu ◽  
Xin Kang Du
Keyword(s):  
Numerical Simulation ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Combustion Process ◽  
Spray Forming ◽  
The Self ◽  
Forming Process ◽  
Element Analysis ◽  
Short Time ◽  
Optimal Melting

With Ti-B4C-C as self-reactive spray forming system, the flying combustion process of the sprayed particles was studied by means of water-quenching experiments and numerical simulation. It was found that after the particles have been heated in the oxyacetylene flame for a short time, Ti in the particles melts first and then infiltrates B4C and C. The SHS reaction of the sprayed particles takes place subsequently. Then the liquid ceramic beads appear and crystallize into ceramic grains finally. By the ANSYS finite element analysis, it can be known that the SHS reaction of the sprayed particles starts after they have left the muzzle for about 9.5×10-4s and lasts about 1.45×10-3s before the ceramic beads solidify. The calculated optimal melting distance for the spray particles is about 116mm, which is consistent with the experimental results on the whole.

Finite Element Analysis on Green Grinding Ti6Al4V Alloy with Inner-Lubricating Wheel

2013 ◽  
Vol 860-863 ◽  
pp. 1600-1603
Author(s):  
Wen Guo Huo ◽  
Lan Rong Cai ◽  
Shao Juan ◽  
Feng Yang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Solid Lubricant ◽  
Cutting Temperature ◽  
The Self ◽  
Grinding Temperature ◽  
Element Analysis ◽  
Obvious Effect ◽  
Tc4 Alloy ◽  
Machining Properties

The objective of this work is to model the cutting properties generated during grinding with internal lubricating wheel. Grinding FEM was carried out with this internal lubricating wheel. The machining properties were assessed in terms of grinding temperature. The results showed that an obvious effect in decreasing the cutting temperature can be obtained by reducing the friction coefficient between the self-lubricating wheel and the TC4 alloy through delivering the solid lubricant directly to the surface of the wheel without the use of inner coolant conditions.

Sign in / Sign up

Export Citation Format

Share Document