Finite element analysis of some factors affecting piezocone penetration test (CPTU) in clays

2010 ◽  
pp. 781-788
Author(s):  
Guojun Cai ◽  
Songyu Liu ◽  
Anand Puppala ◽  
Liyuan Tong ◽  
Guangyin Du
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Penetration Test ◽  
Element Analysis ◽  
Factors Affecting ◽  
Piezocone Penetration Test

scholarly journals Effects of Nozzle Die Angle on Extruding Polymethylmethacrylate in Open-Source 3D Printing

2018 ◽  
Vol 15 (2) ◽  
pp. 663-665 ◽  
Author(s):  
Nor Aiman Sukindar ◽  
Mohd Khairol Anuar Mohd Ariffin ◽  
B.T. Hang Tuah Baharudin ◽  
Che Nor Aiza Jaafar ◽  
Mohd Idris Shah Ismail
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Pressure Drop ◽  
3D Printing ◽  
Open Source ◽  
Flow Behavior ◽  
Three Dimensional ◽  
3D Printer ◽  
Element Analysis ◽  
Factors Affecting

Open-source 3D printer has been widely used for fabricating three dimensional products. However, this technology has some drawbacks that need to be improved such as accuracy of the finished parts. One of the factors affecting the final product is the ability of the machine to extrude the material consistently, which is related to the flow behavior of the material inside the liquefier. This paper observes the pressure drop along the liquefier by manipulating the nozzle die angle from 80° to 170° using finite element analysis (FEA) for polymethylmethacrylate (PMMA) material. When the pressure drop along the liquefier is varied, the printed product also varies, thus providing less accuracy in the finished parts. Based on the FEA, it was found that 130° was the optimum die angle (convergent angle) for extruding PMMA material using open-source 3D printing.

Effects of Ultrasonic Motor Stator Teeth Height on Start Reliability

2015 ◽  
Vol 0 (0) ◽  
Author(s):  
Wei Zheng ◽  
Jing-Liang Zhou ◽  
Yu-Zhen Ruan
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Traveling Wave ◽  
Ultrasonic Motor ◽  
Wave Type ◽  
Element Analysis ◽  
Factors Affecting ◽  
Ultrasonic Motors ◽  
Wide Range ◽  
New Type

AbstractAs a new type of motor, the traveling wave type rotary ultrasonic motors (TRUM) have a wide range of applications. However, the friction between stator and rotor leads to its poor start reliability, which retards the progress of application of ultrasonic motors. Sometimes TRUMs which are widely used cannot start after storage. Height of tooth of the ultrasonic motor’s stator is one of the factors affecting TRUM’s start stabilizing. In this paper, combined with the ultrasonic motor running mechanism, the factors that affect TRUM’s start reliability are studied. Model of ultrasonic motor stator tooth height is analyzed by finite element analysis (FEA). Five TRUMs with different tooth heights are fabricated and measured. A TRUM with 1.85 mm tooth height can start properly in humidity 90%, but ultrasonic motors with 1.8–1.9 mm tooth height cannot start properly under the same conditions.

Finite element analysis on the factors affecting die crack propagation in BGA under thermo-mechanical loading

2020 ◽  
Vol 116 ◽  
pp. 104717
Author(s):  
Niño Rigo Emil G. Lim ◽  
Aristotle T. Ubando ◽  
Jeremias A. Gonzaga ◽  
Richard Raymond N. Dimagiba
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Crack Propagation ◽  
Mechanical Loading ◽  
Element Analysis ◽  
Factors Affecting

Finite Element Analysis of Multi-Function Chassis Underframe

2013 ◽  
Vol 753-755 ◽  
pp. 1587-1590
Author(s):  
Xiao Rong Lv ◽  
Wei Min Ding ◽  
Huai Feng Yang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Service Life ◽  
Weak Link ◽  
Structure Design ◽  
Virtual Model ◽  
Element Analysis ◽  
Factors Affecting ◽  
Optimal Scheme ◽  
3D Software

The failure of the underframe is one of the most important factors affecting the service life of the multi-function chassis. This paper established a virtual model of multi-function chassis by UGNX 3D software; The use of the finite element analyzed model, find the weak link of underframe, and effectively reduce the underframe weight, determine the optimal scheme. Based on the underframe structure design to create the underframe prototype, and passed the test to prove the prototype running smoothly, safe and reliable.

scholarly journals Finite Element Analysis of Stress in Bone and Abutment-Implant Interface under Static and Cyclic Loadings

2020 ◽  
Author(s):  
Saeed Nokar ◽  
Hamid Jalali ◽  
Farideh Nozari ◽  
Mahnaz Arshad
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Stress Concentration ◽  
Stress Distribution ◽  
Maximum Stress ◽  
Von Mises Stress ◽  
Element Analysis ◽  
Bone Implant ◽  
Factors Affecting ◽  
Von Mises

Objectives: The success of implant treatment depends on many factors affecting the bone-implant, implant-abutment, and abutment-prosthesis interfaces. Stress distribution in bone plays a major role in success/failure of dental implants. This study aimed to assess the pattern of stress distribution in bone and abutment-implant interface under static and cyclic loadings using finite element analysis (FEA). Materials and Methods: In this study, ITI implants (4.1×12 mm) placed at the second premolar site with Synocta abutments and metal-ceramic crowns were simulated using SolidWorks 2007 and ABAQUS software. The bone-implant contact was assumed to be 100%. The abutments were tightened with 35 Ncm preload torque according to the manufacturer’s instructions. Static and cyclic loads were applied in axial (116 Ncm), lingual (18 Ncm), and mesiodistal (24 Ncm) directions. The maximum von Mises stress and strain values ​​were recorded. Results: The maximum stress concentration was at the abutment neck during both static and cyclic loadings. Also, maximum stress concentration was observed in the cortical bone. The loading stress was higher in cyclic than static loading. Conclusion: Within the limitations of this study, it can be concluded that the level of stress in single-unit implant restorations is within the tolerable range by bone.

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