Finite Element Modeling of a Microdroplet Generator With Integrated Sensing

2011 ◽  
Author(s):  
William S. Rone ◽  
Pinhas Ben-Tzvi
Keyword(s):  
Finite Element ◽  
Large Scale ◽  
Open Loop ◽  
Liquid Droplets ◽  
Gas Reservoir ◽  
Element Simulation ◽  
Droplet Liquid ◽  
Pressure Changes ◽  
Dominant Paradigm ◽  
Compressible Gas

This paper describes the analysis of a novel microdroplet generator’s integrated sensing capability using finite element simulation. The dominant paradigm for utilizing droplet generation is with either open-loop or externally-sensed closed-loop methods, each with significant disadvantages in terms of reliability and large-scale implementation, respectively. This work utilizes a system designed with a compressible gas reservoir adjacent to the incompressible droplet liquid reservoir. The compressible gas pressure changes as liquid droplets are dispensed from the constant volume fluid reservoir. This change was found to be linearly dependent on the size of the droplet that was ejected, validating this gas reservoir pressure as a useful means of indirectly measuring droplet size internally within the system.

Research on Thermally Induced Deformation of Reinforcing Plate Based on Finite Element Simulation

2012 ◽  
Vol 197 ◽  
pp. 139-143
Author(s):  
Hua Bai ◽  
Yi Du Zhang
Keyword(s):  
Finite Element ◽  
Ambient Temperature ◽  
Finite Element Simulation ◽  
Temperature Change ◽  
Large Scale ◽  
Machining Process ◽  
Reinforcement Structure ◽  
Thermally Induced ◽  
Finite Element Software ◽  
Element Simulation

The change of ambient temperature will cause deformation during the machining process of large-scale aerospace monolithic component. Based on finite element simulation, thermally induced deformation of reinforcing plate is studied in such aspects as reinforcement structure, clamping method and temperature change, and contact function in finite element software is used to simulate the unilateral constraint between workpiece and worktable. The results indicate that reinforcing plate will produce warping deformation due to the change of ambient temperature. Different reinforcement structures and clamping methods have important influence on the deformation positions and degrees, and the deformation is proportional to the temperature change.

Finite Element Simulation of Cartilage Mechanics During Diarthrodial Joint Motion Using Physiological Data

2000 ◽  
Author(s):  
Kerem Ün ◽  
Peter S. Donzelli ◽  
Robert L. Spilker
Keyword(s):  
Finite Element ◽  
Large Scale ◽  
Glenohumeral Joint ◽  
Three Dimensional ◽  
Physiological Data ◽  
Cartilage Mechanics ◽  
Moving Contact ◽  
Diarthrodial Joint ◽  
Element Simulation ◽  
Diarthrodial Joints

Abstract Moving contact is fundamental to understanding the mechanical environment of articular cartilage in diarthrodial joints. This study presents a method for approximating three-dimensional (3D) moving contact of biphasic tissue layers using a time-dependent penetration method. This technique has been implemented in a custom finite element solution framework for large-scale simulation that includes a graphical user interface, automatic meshing, and visualization tools. Thus, physiological geometry and load levels can be simulated by this approximate technique. The method is illustrated for canonical and physiological problems representing the glenohumeral joint (GHJ) of the shoulder.

Finite element simulation of deployment of large-scale confined inflatable structures

2016 ◽  
Vol 104 ◽  
pp. 152-167 ◽  
Author(s):  
Eduardo M. Sosa ◽  
Jerry Choo-Siang Wong ◽  
Adi Adumitroaie ◽  
Ever J. Barbero ◽  
Gregory J. Thompson
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Large Scale ◽  
Inflatable Structures ◽  
Element Simulation

Finite Element Simulation and Experimental Research on Micro-Milling Process of Titanium Alloy

2012 ◽  
Vol 522 ◽  
pp. 245-248 ◽  
Author(s):  
Hai Tao Liu ◽  
Ya Zhou Sun ◽  
De Bin Shan ◽  
Yan Quan Geng
Keyword(s):  
Finite Element ◽  
Titanium Alloy ◽  
Finite Element Simulation ◽  
Large Scale ◽  
Simulation Analysis ◽  
Cutting Speed ◽  
Micro Milling ◽  
Element Analysis ◽  
Element Simulation ◽  
Cutting Heat

There are lots of titanium alloy parts which have large-scale micro-structures in astronautic structure and medical implants, so the micro milling becomes one of the effective processing methods in getting the surface micro-structure. Because the titanium alloy has high caking property in processing, it needs a research on the cutting heat and force in order to get better machining precision and surface quality. According to the finite element theory in elastic and plasticity, the influence of cutting speed to the cutting heat and force is got by finite element simulation analysis to the titanium material TC4 in cutting process. It can get the simulation results of cutting heat and force in the micro milling processing by finite element analysis, and then compared, the basic influence which the cutting speed to the cutting heat and force is got. The correctness of the result is checked through cutting experiments.

Research on Deformation Model of Welding Material Based on Inherent Strain Finite Element Prediction Method

2020 ◽  
Vol 980 ◽  
pp. 58-69
Author(s):  
Wen Cheng Wang ◽  
Lisong Tang ◽  
Feng Wang
Keyword(s):  
Finite Element ◽  
Large Scale ◽  
Plate Thickness ◽  
Prediction Method ◽  
Simulation Software ◽  
Deformation Model ◽  
Welding Deformation ◽  
Element Simulation ◽  
Inherent Strain ◽  
Finite Element Prediction

The paper first introduces the concept of inherent strain and the theory and method of predicting welding deformation by the inherent strain finite element method. Studies have shown that the inherent strain exists in the weld and the near seam area, and it is also related to factors such as welding heat input and plate thickness. Through the use of large-scale finite element simulation software ANSYS, the inherent strain finite element prediction method is applied to the welding deformation of the outer gantry assembly material of forklift, which provides effective reference data for future welding work of forklift gantry materials.

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