The Study of Acceleration Effect for Piezoresistive Micro Pressure Sensor

2013 ◽  
Vol 455 ◽  
pp. 455-459 ◽  
Author(s):  
Bian Tian ◽  
Yu Long Zhao ◽  
Zhe Niu
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Stress Distribution ◽  
Pressure Sensor ◽  
Pressure Measurement ◽  
The Finite Element Method ◽  
Piezoresistive Pressure Sensor ◽  
Traditional Structures ◽  
Acceleration Signals ◽  
Better Than

This paper reports the acceleration effect of a type of piezoresistive pressure sensor for micro-pressure measurement with a cross beam-membrane (CBM) structure. By using the finite element method (FEM) to analyze the stress distribution of the CBM structure and compared with the traditional structures under acceleration signals. Our results show that the sensitivity and linearity of the CBM is better than other structures, but also the acceleration disturb analysis indicating that the CBM structure offers low acceleration interference for micro-pressure measurement in vibration environments.

Improvements for a Hydraulic Excavator's Boom

2014 ◽  
Vol 490-491 ◽  
pp. 510-513
Author(s):  
Sheng Bin Wu ◽  
Xiao Bao Liu
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Stress Concentration ◽  
Stress Distribution ◽  
High Stress ◽  
The Finite Element Method ◽  
Element Method ◽  
Concentration Phenomenon

Focus on stress concentration and high stress area, four improvements were put forward through analyzed a hydraulic excavator's boom with the finite element method under the bucket digging condition. Compared the stress distribution graph, the results show that these schemes can improve the stress concentration phenomenon and the high stress distribution areas. The practices demonstrated the effectiveness to reduce the invalidation rate of hydraulic excavator's boom.

Performances of HSK Spindle/Toolholder Interface for HSM

2006 ◽  
Vol 532-533 ◽  
pp. 269-272
Author(s):  
Song Zhang ◽  
Xing Ai ◽  
Jian Feng Li ◽  
Xiu Li Fu
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Stress Distribution ◽  
Contact Stress ◽  
High Speed ◽  
Rapid Development ◽  
High Speed Machining ◽  
The Finite Element Method ◽  
Axial Movement ◽  
Contact Stress Distribution

With the rapid development of high-speed machining technology, more and more machining centers have been equipped with the HSK toolholders. In this paper, the performances of the HSK spindle/toolholder interface, such as the axial movement, the radial deflection and the contact stress distribution, were simulated by means of the finite element method and compared with the traditional BT interface. From the simulated results, it was pointed out that the performances of the HSK interface were obviously superior to that of the BT interface, and the HSK interface was much more suitable for high-speed machining.

scholarly journals Waveguide Structures with Improved Cut-off Frequency and Bandwidth

2019 ◽  
Vol 9 (2S3) ◽  
pp. 82-85
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Wave Transmission ◽  
The Finite Element Method ◽  
Transmission Characteristics ◽  
Ridge Waveguides ◽  
Ridge Structures ◽  
Double Ridge ◽  
Better Than ◽  
Element Method

The wave transmission characteristics of rectangular, double-ridge, trapezoidal-ridge and anti-trapezoidal ridge waveguides are analyzed using the finite-element method. The cut-off wavelength and attenuation of these waveguides are calculated. The result shows that anti-trapezoidal ridge waveguides perform better than rectangular, double-ridge and trapezoidal-ridge waveguides. The variation of bandwidth and attenuation with respect to change in the angle of physical ridge structures has been studied while migrating from rectangular to anti-trapezoidal ridge structures.

Modified Coronal Incision: Distribution of Stress in the Scalp and Cranium

1993 ◽  
Vol 30 (4) ◽  
pp. 382-386
Author(s):  
Sadanori Akita ◽  
Akiyoshi Hirano
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Stress Distribution ◽  
Fem Analysis ◽  
Craniofacial Surgery ◽  
The Finite Element Method ◽  
Modified Method ◽  
Distribution Of Stress ◽  
Scalp Incision ◽  
Coronal Incision

Coronal incision or bitemporal incision is useful for wider visualization in craniofacial surgery. In volume-expanding surgery such as fronto-orbital advancement, however, the incisional scar in the temporal scalp is often undesirably wide and conspicuous. We modified the coronal incision to avoid the widened scar. Further, we analyzed the resulting stress distribution using the finite element method (FEM) to determine whether or not the modification we adapted was effective. The modified method of coronal scalp incision that we used for craniofacial surgery is practical and technically easy. FEM analysis showed that our method was effective in terms of mechanical strength. The simulated surgical craft model is presented and is concluded to be beneficial for further analysis in craniofacial surgery.

The Simulated Calculation and Optimizing Experimental Research of the Residual Stress of the Heavy Rail Straightening

2011 ◽  
Vol 704-705 ◽  
pp. 296-301
Author(s):  
Lin Chen ◽  
Jian Guo Wang ◽  
Ge Li
Keyword(s):  
Finite Element Method ◽  
Residual Stress ◽  
Finite Element ◽  
Regression Analysis ◽  
3D Model ◽  
Real Field ◽  
The Finite Element Method ◽  
Simulated Calculation ◽  
Heavy Rail ◽  
Better Than

The finite element 3D model of heavy rail roller complex straightening is established by the finite element method in this paper.The straightening process is optimized by orthogonal experimentation and regression analysis. The formative mechanics and the regulation of the residual stress in the process of straightening are researched. The results of the simulation show that: whatever is on the basement of the residual stress or flatness, the new schedule is better than the real field one, residual stress is controlled within 250Mpa.

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