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Torsion links are components which couple inner and outer cylinders of a landing gear mechanism. They prevent torsion or twisting between the cylinder and piston components in the structure. The integrity of this component is essential to prevent shimmy vibrations in an aircraft landing gear. Failure of this component is thus catastrophic for the aircraft. The typical geometry of torsion link of a...
This presents a methodology to determine detail design directions of an 150kW-class IPMSM and its detail design. The basic design of the stator and rotor was conducted. After dividing the designed models into the best cases and the worst cases based on rotor shape parameters, Sensitivity Analysis and 3D Voltage-Inductance Map parameters were analyzed. Then, the design direction for the final model...
Car industry is moving fast and design optimization is becoming more and more important for manufacturers to be able to bring out their best products. After a part of the car is designed using 3D Modeling software, it will be delivered to finite element analysis (FEA) software to do simulation in order to understand if the model is ready for mass production or not. This is a persistence job because...
Nowadays, the methods and tools of the 3D technology and human body modeling are developed rapidly, learning and analyzing 3D body scans will accelerate the development of 3D modeling. In this research, a novel algorithm using intersection views is proposed for retrieving 3D body scans. An Asian Female Body Scan (AFBS) database is established by analyzing various 3D body scan data at first, and then,...
Free form surface modeling is one of the most advanced procedures of creating digital models in CAD. Use of free surface for creating solid models has become increasingly relevant in terms of technological possibilities of production in the subsequent phases of the product lifecycle. Multi-axis computer-controlled machines are standard even in small workshops and rapid prototyping is undergoing progressive...
In early stage of the design process, modelling is a crucial phase because it allows the designer estimating the device performance before fabrication. Very often, this phase is performed with use of FEM simulator that is usually time consuming. In many cases, especially when simple structures are used, the use of analytical model is more convenient. In this paper we present an analytical model of...
Key markets, such as automotive, wearables, and internet-of-things (IoT) are spearheading the drive to realize more sophisticated packaging technologies that include the growing use of interposers and 3D ICs. With the goal of improving processing performance, increasing clock speeds, and reducing power consumption, design teams are challenged with ensuring signal quality, power delivery, and thermal...
The present paper is concerned with study of the effects of different characteristics of the corneoscleral shell of the human eye on intraocular pressure (IOP) changes after intravitreal injections. Sensitivity analysis was performed to quantify the relative importance of material and geometrical parameters of the eyeball on the IOP elevation.
Liquid epoxy resin is used in various types of mobile information equipment and devices and expected to be a key material for flip chip packaging [1-2]. The flip chip connection process is a thermo-compression molding process. In this process, air voids may remain behind due to the bump shape and resin properties; therefore, an appropriate molding condition is necessary. We developed a computer-aided...
The design and development of small scale aerial robots has been currently hindered by the lack of applicability of conventional aerodynamics equations/principles to the small size vehicles flying at extremely low Reynolds number. Also conventional optimization techniques and algorithms have shown very limited success in these applications. Trial and error has been the most effective design tool in...
This paper presents the structure design and analysis of a novel compliant gripper based on the Scott-Russell (SR) mechanism. An SR mechanism in combination with a parallelogram mechanism enables the achievement of a pure translation of the gripper tips, which is attractive for practical micromanipulation and microassembly applications. As compared with traditional pure-translation grippers, the reported...
Scientific analysis of the scanned model can enhance interpretation of heritage. Visualization methods that use various rendering algorithm can reveal geometric features of the model clearly, which may not be recognized in pictures or even on the site. Thus it helps to overcome the subjectivity or restriction in first-hand interpretation. In this paper, visualization of scanned model for interpretation...
The grate bar is one of the important parts of the inertia resonance probability screen system, which is the main component of coal unloading system in the power plant. Therefore, the dynamic characteristic of the grate bar is studied in this paper. Based on the 3D model, the theory modal analysis of the inertia resonance probability screen grate bar was conducted with ANSYS software and the experimental...
In a previous 2D parametric study, it was found that the die size appear to have no significant effect on the likelihood of delamination at the pad-encapsulant interface in a plastic-encapsulated IC package. This trend appears to be counter intuitive since in practice, it is known that larger dies are more likely to delaminate in comparison with smaller ones. The authors had speculated that this could...
Applications such as robotics and augmented reality (AR) require 3D tracking of rigid objects. In robotic applications, the availability of accurate and robust pose estimates increases reliability, whereas in AR scenarios reliable pose estimates decrease jitter. Pure vision sensor based 3D trackers require either manual initializations of pose or off-line training stages. On the other hand, trackers...
Purpose of this research is to find correlations between Indonesian Traditional 'Wayang Kulit' Puppet shapes and their roles in the story. However, the information needed to achieve this purpose is not digitally archived yet. Consequently the research to find the way of archiving the regarding information needs to be carried out. The methodology proposed here is using the 3D model to recognize the...
Based on the analysis of geometrical characteristic, material composition and load characteristics of the optical fiber dispenser, a template based method to implement three dimensional parametric design of optical fiber dispenser was put forward. The template is created by interactive way firstly. Then a set of design parameters which completely control the shape and dimensions of optical fiber dispenser...
Within the modeling design in discrete element method, there is always the modeling problem of complex particle which can not meet the needs of design requirements through approximation modeling of CAD primitive. This paper will explore a method to design an algorithm by filling equal radius balls inside the complex particle along their outer boundary and use simple geometrical shape in modeling instead...
High level requirements that describe the various objectives to be met by a system may not always be fully comprehensible, especially when expressed in textual form. The possibilities of misinterpreting requirements, and missing out on grasping the contextual information associated with requirements increase with several factors. Some of these causes include the volume of interaction between related...
In order to investigate the performance of the high-speed electric spindle, the static and dynamic characteristics of the spindle are analyzed by using the finite element analysis method in this paper. For obtaining the static deformation and static stiffness of the spindle, static analysis of the spindle is carried out based on a simpLified static analysis model through using the software of ANSYS...
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