An effective design procedure for A-Sandwich radome

2010 ◽  
Author(s):  
Kyung-Won Lee ◽  
Yeong-Chul Chung ◽  
Ic-Pyo Hong ◽  
Jong-Gwan Yook
Keyword(s):  
Design Procedure ◽  
Effective Design

scholarly journals 3D Heat transfer Simulation of an injection mold: comparison between ANSYS Workbench and ANSYS Mechanical APDL

2021 ◽  
Author(s):  
Hugo Miguel Silva ◽  
Leandro Fernandes ◽  
Hugo Luís Rodrigues ◽  
João Tiago Noversa ◽  
António José Pontes
Keyword(s):  
Design Procedure ◽  
Cost Effective ◽  
Injection Molding Process ◽  
Machining Processes ◽  
Molding Process ◽  
Cooling Channels ◽  
Fine Mesh ◽  
Conformal Cooling Channels ◽  
Heat Transfer Simulation ◽  
Effective Design

Abstract Because of recent advancements in additive manufacturing, fabricating conformal cooling channels (CCCs) has become easier and more economical. In the injection molding process, CCCs provide higher cooling performance than standard (straight drilled) channels. The major reason for this is that CCCs may follow the courses of the molded geometry, whereas typical channels created using traditional machining processes cannot. Using CCCs can reduce thermal strains and warpage while also improving cycle time and achieving a more uniform temperature distribution. CCC, on the other hand, has a more complicated design procedure than traditional channels. Simulations using computer-aided engineering (CAE) are critical for achieving an effective and cost-effective design. This article compares two ANSYS modules for the purpose of validating results. It can be inferred that the two modules produce similar results for models with fine mesh. As a result, the ANSYS module to work on should be chosen depending on the job's goal as well as the CAD geometry's complexity.

scholarly journals Design of Shaped Beam Planar Arrays of Waveguide Longitudinal Slots

2013 ◽  
Vol 2013 ◽  
pp. 1-12 ◽  
Author(s):  
Giovanni Andrea Casula ◽  
Giuseppe Mazzarella ◽  
Giorgio Montisci
Keyword(s):  
Design Procedure ◽  
Pencil Beam ◽  
Shaped Beam ◽  
Planar Arrays ◽  
Slot Arrays ◽  
Synthesis Procedure ◽  
Set Up ◽  
Aperture Distribution ◽  
Longitudinal Slot ◽  
Effective Design

The Elliott’s procedure for the design of a pencil beam waveguide longitudinal slot array has been generalized to encompass the design of shaped beam planar slot arrays. An extended set of design equations, taking into account in an operative way the feeding part of the array, has been devised. From this set of equations, a general and effective design procedure has been set up, shedding light on the constraints posed by a complex aperture distribution. The results of the proposed synthesis procedure have been validated through comparison with a commercial FEM software.

scholarly journals Design of Multilayer Dielectric Cover to Enhance Gain and Efficiency of Slot Arrays

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Giorgio Montisci ◽  
Zusheng Jin ◽  
Mingchao Li ◽  
Hu Yang ◽  
Giovanni Andrea Casula ◽  
...  
Keyword(s):  
Free Space ◽  
Production Cost ◽  
Synthesis Method ◽  
Design Procedure ◽  
Optimal Choice ◽  
Slot Arrays ◽  
Consequent Reduction ◽  
Effective Design ◽  
Array Gain ◽  
Multilayer Dielectric

An effective design procedure, based on the Elliot synthesis method, is proposed to investigate the properties of waveguide slot arrays with multilayer dielectric cover. Then, the features of the designed arrays are analyzed by means of a FEM commercial software, namely, Ansys HFSS 13. We show how a proper choice of the dielectric cover configuration allows increasing the array gain and aperture efficiency, while taking advantage of the properties of the radome structure, in terms of insulation, protection, and pressurization of the radiating waveguides. Therefore, a significant outcome of the optimal choice of the multilayer dielectric cover is the reduction of the number of slots with respect to an array radiating into free space with the same gain and efficiency, with a consequent reduction of the production cost.

Application of Computational Mechanics to Tire Design—Yesterday, Today, and Tomorrow

2011 ◽  
Vol 39 (4) ◽  
pp. 223-244 ◽  
Author(s):  
Y. Nakajima
Keyword(s):  
Finite Element ◽  
New Technologies ◽  
Computational Mechanics ◽  
Design Procedure ◽  
Side Wall ◽  
Rolling Resistance ◽  
Optimization Techniques ◽  
Stress Strain ◽  
Element Analysis ◽  
Crown Shape

Abstract The tire technology related with the computational mechanics is reviewed from the standpoint of yesterday, today, and tomorrow. Yesterday: A finite element method was developed in the 1950s as a tool of computational mechanics. In the tire manufacturers, finite element analysis (FEA) was started applying to a tire analysis in the beginning of 1970s and this was much earlier than the vehicle industry, electric industry, and others. The main reason was that construction and configurations of a tire were so complicated that analytical approach could not solve many problems related with tire mechanics. Since commercial software was not so popular in 1970s, in-house axisymmetric codes were developed for three kinds of application such as stress/strain, heat conduction, and modal analysis. Since FEA could make the stress/strain visible in a tire, the application area was mainly tire durability. Today: combining FEA with optimization techniques, the tire design procedure is drastically changed in side wall shape, tire crown shape, pitch variation, tire pattern, etc. So the computational mechanics becomes an indispensable tool for tire industry. Furthermore, an insight to improve tire performance is obtained from the optimized solution and the new technologies were created from the insight. Then, FEA is applied to various areas such as hydroplaning and snow traction based on the formulation of fluid–tire interaction. Since the computational mechanics enables us to see what we could not see, new tire patterns were developed by seeing the streamline in tire contact area and shear stress in snow in traction.Tomorrow: The computational mechanics will be applied in multidisciplinary areas and nano-scale areas to create new technologies. The environmental subjects will be more important such as rolling resistance, noise and wear.

Issues on Design of Piled Raft Foundation

2018 ◽  
Vol 14 (1) ◽  
pp. 6057-6061 ◽  
Author(s):  
Padmanaban M S ◽  
J Sreerambabu
Keyword(s):  
Contact Area ◽  
Concrete Slab ◽  
Design Procedure ◽  
Bending Moment ◽  
Foundation Design ◽  
Detailed Review ◽  
Piled Raft ◽  
Piled Raft Foundation ◽  
Raft Foundation ◽  
Influencing Parameters

A piled raft foundation consists of a thick concrete slab reinforced with steel which covers the entire contact area of the structure, in which the raft is supported by a group of piles or a number of individual piles. Bending moment on raft, differential and average settlement, pile and raft geometries are the influencing parameters of the piled raft foundation system. In this paper, a detailed review has been carried out on the issues on the raft foundation design. Also, the existing design procedure was explained.

Brand Power Through Effective Design

2009 ◽  
Vol 4 (1) ◽  
pp. 11-25 ◽  
Author(s):  
Thomas Page ◽  
◽  
Gisli Thorsteinsson ◽  
Keyword(s):  
Effective Design
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