Strength Analysis of Epoxy Molding Compound Module Using Automated FEA System

2014 ◽  
Vol 670-671 ◽  
pp. 852-855
Author(s):  
Joon Seong Lee ◽  
Hee Rok Hong ◽  
Gye Hyun Jo ◽  
Dong Keun Park
Keyword(s):  
Lithium Ion ◽  
Rechargeable Batteries ◽  
Strength Analysis ◽  
Battery Life ◽  
Thin Wall ◽  
Element Analysis ◽  
Epoxy Molding Compound ◽  
Molding Compound ◽  
Finite Element Analysis Simulation ◽  
Analysis System

Recently, consumers are often dissatisfied with the battery life from even the most advanced lithium-ion rechargeable batteries in mobile phone. A mobile battery was chosen in this study because it is the flat plate of small thin wall which is expected to have some flexing. It is required to be evaluated and designed considering the coupled phenomena. Especially, this paper describes finite element analysis simulation of strength evaluation for epoxy molding compound module using automated FE analysis system.

Finite Element Analysis Using Free Mesh Method

2016 ◽  
Vol 835 ◽  
pp. 661-664
Author(s):  
Joon Seong Lee
Keyword(s):  
Smart Phone ◽  
Lithium Ion ◽  
Rechargeable Batteries ◽  
Battery Life ◽  
Thin Wall ◽  
Element Analysis ◽  
Mesh Method ◽  
Practical Performance ◽  
Element Free Method ◽  
Element Free

Recently, consumers are often dissatisfied with the battery life from even the most advanced lithium-ion rechargeable batteries in mobile phone. A mobile battery was chosen in this study because it is the flat plate of small thin wall which is expected to have some flexing. It is required to be evaluated and designed considering the coupled phenomena. Especially, this paper describes a meshless of element-free method based on fuzzy knowledge processing for battery of smart phone. Practical performance of the present method is demonstrated through heat conduction analysis.

scholarly journals Strength Analysis of the Truck Wheel Rim Robot Gripper

2021 ◽  
Vol 51 (1) ◽  
pp. 104-110
Author(s):  
Mindaugas Tiknis ◽  
Arturas Sabaliauskas
Keyword(s):  
Simulation System ◽  
Strength Analysis ◽  
Cad Model ◽  
Element Analysis ◽  
Robot Gripper ◽  
Wheel Rim ◽  
The Finite Element Analysis ◽  
Strength And Stiffness ◽  
Analysis System ◽  
Construction Optimization

This paper presents a study of the strength of the truck rim robot gripper structure using the finite element analysis system Solidworks Simulation. The developed CAD model of the gripper was adapted to the research by Solidworks Simulation system, which was used to evaluate the strength and stiffness of the structure. Construction optimization was performed, the obtained results were compared.

scholarly journals Calculation justification for replacing the strengtheing agent of the composite hull of the catamaran type vessel

2020 ◽  
pp. 49-55
Author(s):  
М.В. Ховайко ◽  
А.О. Осипова ◽  
А.С. Немов
Keyword(s):  
Finite Element ◽  
Strength Analysis ◽  
Structural Elements ◽  
Element Analysis ◽  
Composite Body ◽  
Ship Hulls ◽  
Stiffness Characteristics ◽  
Strength And Stiffness ◽  
Analysis System ◽  
The Cost

Статья посвящена вопросам проектирования корпусов судов из полимерных композиционных материалов. В качестве объекта исследования рассматривается прототип судна-катамарана. Целью работы является модификация композитного корпуса прототипа, предполагающая замену армирующего элемента в композиционном материале с углеродных волокон на стеклянные в целях снижения стоимости конструкции. Основными задачами работы являются разработка модифицированной структуры элементов конструкции корпуса на основе анализа прочности, а также анализ экономической эффективности выполненной модификации. Анализ прочности композитных конструкций корпуса выполняется с помощью прямого конечно-элементного (КЭ) моделирования с применением системы КЭ анализа ANSYS Mechanical APDL. Расчётная методика основана на требованиях классификационных сообществ DNV GL и Российского морского регистра судоходства (РМРС). В результате работы на основе многовариантного конечно-элементного анализа выполнена модификация существующего проекта судна под материал с существенно отличающимися прочностными и жесткостными характеристиками при минимальном изменении геометрии корпусных элементов. Обоснована возможность уменьшения затрат на материал корпуса в 1.5-2- раза при незначительном увеличении водоизмещения и с условием обеспечения прочности корпуса в соответствии с требованиями международных и российских классификационных сообществ. The article is devoted to the issues of designing ship hulls from polymer composite materials. A prototype of a catamaran ship is considered as an object of research. The aim of the work is to modify the composite body of the prototype, which involves replacing the strengthening element in the composite material from carbon fibers to glass ones in order to reduce the cost of the structure. The main tasks of the work are the development of a modified structure of the hull structural elements based on the strength analysis, as well as the analysis of the economic efficiency of the modification. Strength analysis of composite hull structures is performed using direct finite element (FE) modeling using the ANSYS Mechanical APDL FE analysis system. The calculation method is based on the requirements of the classification associations (DNV GL) and the Russian Maritime Register of Shipping (RMRS). As a result of the work, on the basis of multivariate finite element analysis, the existing ship design has been modified for material with significantly different strength and stiffness characteristics with minimal changes in the geometry of the hull members. The possibility of reducing the cost of the hull material by 1.5-2 times with a slight increase in displacement and with the condition of ensuring the strength of the hull in accordance with the requirements of international and Russian classification associations has been substantiated.

Numerical and Experimental Study of Interface Delamination in Flip Chip BGA Package

2010 ◽  
Vol 132 (1) ◽  
Author(s):  
Hu Guojun ◽  
Andrew A. O. Tay ◽  
Luan Jing-En ◽  
Ma Yiyi
Keyword(s):  
Thermal Expansion ◽  
Material Properties ◽  
Flip Chip ◽  
Coefficient Of Thermal Expansion ◽  
Element Analysis ◽  
Epoxy Molding Compound ◽  
Molding Compound ◽  
Interface Delamination ◽  
Underfill Material ◽  
Die Thickness

The reliability of the flip chip package is strongly influenced by underfill, which has a much higher coefficient of thermal expansion (CTE) compared with other packaging materials and leads to large thermomechanical stresses developed during the assembly processes. Thermal expansion mismatch between different materials causes interface delamination between epoxy molding compound and silicon die as well as interface delamination between underfill and silicon die. The main objective of this study is to investigate the effects of underfill material properties, fillet height, and silicon die thickness on the interface delamination between epoxy molding compound and silicon die during a lead-free solder reflow process based on the modified virtual crack closure method. Based on finite element analysis and experiment study, it can be concluded that the energy release rates at reflow temperature are the suitable criteria for the estimation of interface delamination. Furthermore, it is found that underfill material properties (elastic modulus, CTE, and chemical cure shrinkage), fillet height, and silicon die thickness can be optimized to reduce the risk of interface delamination between epoxy molding compound and silicon die in the flip chip ball grid array package.

Warpage Control Method in Epoxy Molding Compound

2020 ◽  
Author(s):  
Wei Tan ◽  
Cheng Cheng ◽  
Hongjie Liu ◽  
Yangyang Duan ◽  
Linlin Liu ◽  
...  
Keyword(s):  
Control Method ◽  
Epoxy Molding Compound ◽  
Molding Compound

Recent advances in ferromagnetic metal sulfides and selenides as anodes for sodium- and potassium-ion batteries

2021 ◽  
Author(s):  
Yuhan Wu ◽  
Chenglin Zhang ◽  
Huaping Zhao ◽  
Yong Lei
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Rechargeable Batteries ◽  
Potassium Ion ◽  
Sodium Ion ◽  
Metal Sulfides ◽  
Sodium Ion Batteries ◽  
Next Generation ◽  
Cost Competitiveness ◽  
Sodium And Potassium

In next-generation rechargeable batteries, sodium-ion batteries (SIBs) and potassium-ion batteries (PIBs) have been considered as attractive alternatives to lithium-ion batteries due to their cost competitiveness. Anodes with complicated electrochemical mechanisms...

scholarly journals Separation and Efficient Recovery of Lithium from Spent Lithium-Ion Batteries

Metals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1091
Author(s):  
Eva Gerold ◽  
Stefan Luidold ◽  
Helmut Antrekowitsch
Keyword(s):  
Lithium Ion Batteries ◽  
Electric Vehicles ◽  
Sodium Phosphate ◽  
Room Temperature ◽  
State Of The Art ◽  
Potassium Phosphate ◽  
Lithium Ion ◽  
Rechargeable Batteries ◽  
Raw Material ◽  
Efficient Recovery

The consumption of lithium has increased dramatically in recent years. This can be primarily attributed to its use in lithium-ion batteries for the operation of hybrid and electric vehicles. Due to its specific properties, lithium will also continue to be an indispensable key component for rechargeable batteries in the next decades. An average lithium-ion battery contains 5–7% of lithium. These values indicate that used rechargeable batteries are a high-quality raw material for lithium recovery. Currently, the feasibility and reasonability of the hydrometallurgical recycling of lithium from spent lithium-ion batteries is still a field of research. This work is intended to compare the classic method of the precipitation of lithium from synthetic and real pregnant leaching liquors gained from spent lithium-ion batteries with sodium carbonate (state of the art) with alternative precipitation agents such as sodium phosphate and potassium phosphate. Furthermore, the correlation of the obtained product to the used type of phosphate is comprised. In addition, the influence of the process temperature (room temperature to boiling point), as well as the stoichiometric factor of the precipitant, is investigated in order to finally enable a statement about an efficient process, its parameter and the main dependencies.

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