scholarly journals Design Study for a New Spanner

2021 ◽  
Vol 11 (19) ◽  
pp. 8878
Author(s):  
Ming-Che Lin ◽  
Tsung-Han Ho
Keyword(s):  
Numerical Analysis ◽  
Parameter Design ◽  
Piping System ◽  
Outer Diameter ◽  
Ansys Software ◽  
Bend Radius ◽  
Optimization Analysis ◽  
Control Factors ◽  
Operational Safety ◽  
Computer Aided

A replacement for the original F-spanner is designed using computer-aided engineering (CAE) and the Taguchi method. In the design process, the L9(34) orthogonal table was used for parameter design. Four control factors are used: outer diameter, bend radius, angle, and connected fillet. Each factor is set to three levels with numerical analysis using ANSYS software. After performing an optimization analysis for the combination parameters, the prototype is created by rapid-prototyping (RP) and is found to improve operational safety in a piping system.

scholarly journals Numerical Analysis of Bearing Capacity of a Ring Footing on Geogrid Reinforced Sand

Buildings ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 68
Author(s):  
Haidar Hosamo ◽  
Iyad Sliteen ◽  
Songxiong Ding
Keyword(s):  
Numerical Analysis ◽  
Bearing Capacity ◽  
Double Layer ◽  
Practical Importance ◽  
Single Layer ◽  
Outer Diameter ◽  
Storage Container ◽  
Reinforced Sand ◽  
Oil Storage ◽  
Ring Footing

A ring footing is found to be of practical importance in supporting symmetrical constructions for example silos, oil storage container etc. In the present paper, numerical analysis was carried out with explicit code FLAC3D 7.0 to investigate bearing capacity of a ring footing on geogrid reinforced sand. Effects of the ratio n of its inner/outer diameter (Di/D) of a ring footing, an optimum depth to lay the geogrid layer were examined. It was found that an intersection zone was developed in soil under inner-side (aisle) of ring footing, contributing to its bearing capacity. Substantial increase of bearing capacities could be realized if ratio n of a ring footing was around 0.6. Numerical results also showed that, bearing capacity of a ring footing could increase significantly if a single-layer geogrid was laid at a proper depth under the footing. Similar contribution was found if a double-layer geogrid was implemented. However, such increases appeared to be rather limited if a triple-layer geogrid or a four-layer geogrid was used. A double-layer geogrid was recommended to increase the bearing capacity of a ring footing; the depth to lay this double-layer geogrid was also discussed.

An Investigation of Cavitation and Suction Vortices Behavior in Pump Sump

2011 ◽  
Author(s):  
Won-Tae Kang ◽  
Ki Han Yu ◽  
Seung Yeob Lee ◽  
Byeong Rog Shin
Keyword(s):  
Experimental Investigation ◽  
Numerical Analysis ◽  
Test Procedure ◽  
Three Dimensional ◽  
Water Levels ◽  
National Standard ◽  
Piping System ◽  
Test Model ◽  
Grid Systems ◽  
Volume Method

A numerical and an experimental investigation on a suction vortices including cavitation, free vortices and subsurface vortices behavior in the model sump system with multi-intakes is performed at several flow rates and water levels. A test model sump and piping system were designed based on Froude similitude for the prototype of the recommended structure layout by HI-9.8 American National Standard for Pump Intake Design of the Hydraulic Institute. An experiment is performed according to the sump model test procedure of Hyosung Goodsprings, Inc. A numerical analysis of three dimensional multiphase flows through the model sump is performed by using the finite volume method of the CFX code with multi-block structured grid systems. A k-ω Shear Stress Transport turbulence model and the Rayleigh-Plesset cavitation model are used for solving turbulence cavitating flow. Several types of free surface and submerged vortex which occurs with each different water level are identified through the experimental investigation. From the numerical analysis, the vortices are reproduced and their formation, growing, shedding and detailed vortex structures are investigated. To reduce abnormal vortices, an anti-vortex device is considered and its effect is investigated and discussed.

Computer Aided Piping System at Engineers India

1983 ◽  
pp. 656-665
Author(s):  
S. Krishnamurti ◽  
G. M. Deshpande ◽  
V. K. Gupta
Keyword(s):  
Piping System ◽  
Computer Aided

scholarly journals Experimental and Numerical Testing of Ambient Temperature Impact on Lifespans of Cuffs of Vehicles’ Steering Systems

2020 ◽  
Vol 10 (12) ◽  
pp. 4371
Author(s):  
Radoje Vujadinović ◽  
Vladimir Pajković ◽  
Sreten Simović ◽  
Milanko Damjanović ◽  
Petar Nikčević
Keyword(s):  
Numerical Analysis ◽  
Ambient Temperature ◽  
Steering System ◽  
Ansys Software ◽  
Software Environment ◽  
Numerical Testing ◽  
Northern Areas ◽  
Protective Element ◽  
Temperature Impact ◽  
The Impact

The steering system represents one of the most important systems of active safety in vehicles. The process of a steering system failure usually starts with the failure of its protective element (cuff). Numerous factors influence a cuff’s lifespan, but the research subject of this paper is the impact of ambient temperature. The goal of this research is the experimental verification of the finding that vehicles used in northern areas require more frequent interventions in their steering systems than vehicles used in the south. A simulator performing a motion similar to the work of a cuff during a vehicle’s motion was made for the purpose of the research. A refrigerating chamber where cuffs were tested at temperatures from −4 °C to −20 °C was also made. A numerical analysis, with the ANSYS software environment, was also carried out. The numerical analysis shows that the failure of a cuff could be expected at almost the same point at which it was experimentally proven. Therefore, the failure, namely the breaking of a cuff, is not only a consequence of the material’s fatigue due to a big number of oscillations, but it also depends upon the impact of ambient temperature where the vehicle is used.

Numerical Analysis and Optimization on Dynamic Performance of Large Turbo Generator Frame Foundation

2012 ◽  
Vol 166-169 ◽  
pp. 720-724
Author(s):  
Bai Sheng Wang ◽  
Dong Hui Cao ◽  
Ying Wu Yang ◽  
Chun Xiao Xu ◽  
Hua Jun Qian
Keyword(s):  
Numerical Analysis ◽  
Power Plant ◽  
Numerical Model ◽  
Working Conditions ◽  
Structural Design ◽  
Dynamic Performance ◽  
Linear Displacement ◽  
Ansys Software ◽  
Amplitude Control ◽  
Turbo Generator

A space numerical model about 1000MW turbo generator foundation of a power plant is established by ANSYS software, meanwhile analyzing the model’s vibration characteristics and response under the turbo generator working conditions. According to the existing norms, optimizing the foundation based on the linear displacement amplitude control, furthermore researching the corresponding dynamic on the optimized foundation for guidance to structural design.

An approach to the classification of lactobacilli using computer-aided numerical analysis

1968 ◽  
Vol 14 (4) ◽  
pp. 313-318 ◽  
Author(s):  
Patricia L. Seyfried
Keyword(s):  
Numerical Analysis ◽  
Electronic Computer ◽  
Computer Aided ◽  
Genus Lactobacillus ◽  
Taxonomic Groups

An electronic computer was used to analyze the data obtained for 82 strains of streptococci, lactobacilli, and propionibacteria. The lactobacilli were divided into three major taxonomic groups which correspond to the subgenera Thermobacterium, Streptobacterium, and Betabacterium described by Orla-Jensen (14). Three clusters observed among the streptococcal strains also correlate with Sherman's (19) classification of pyogenic, fecal, and lactic groups of streptococci. The results are in agreement with present classifications. No justification for including the genus Lactobacillus in the same family as genus Propionibacterium was found.

An Adaptive One-Factor-at-a-Time Method for Robust Parameter Design: Comparison With Crossed Arrays via Case Studies

2007 ◽  
Vol 130 (2) ◽  
Author(s):  
Daniel D. Frey ◽  
Nandan Sudarsanam
Keyword(s):  
Case Studies ◽  
Experimental Error ◽  
Fractional Factorial ◽  
Parameter Design ◽  
Robust Parameter Design ◽  
Control Factors ◽  
Starting Point ◽  
Robust Parameter ◽  
Crossed Arrays ◽  
Noise Factors

This paper presents a conceptually simple and resource efficient method for robust parameter design. The proposed method varies control factors according to an adaptive one-factor-at-a-time plan while varying noise factors using a two-level resolution III fractional factorial array. This method is compared with crossed arrays by analyzing a set of four case studies to which both approaches were applied. The proposed method improves system robustness effectively, attaining more than 80% of the potential improvement on average if experimental error is low. This figure improves to about 90% if prior knowledge of the system is used to define a promising starting point for the search. The results vary across the case studies, but, in general, both the average amount of improvement and the consistency of the results are better than those provided by crossed arrays if experimental error is low or if the system contains some large interactions involving two or more control factors. This is true despite the fact that the proposed method generally uses fewer experiments than crossed arrays. The case studies reveal that the proposed method provides these benefits by exploiting, with high probability, both control by noise interactions and also higher order effects involving two control factors and a noise factor. The overall conclusion is that adaptive one-factor-at-a-time, used in concert with factorial outer arrays, is demonstrated to be an effective approach to robust parameter design providing significant practical advantages as compared to commonly used alternatives.

scholarly journals Optimization Analysis of Knowledge Label Personalized Dynamic Recommendation System Based on Artificial Intelligence Algorithm

2022 ◽  
Vol 2146 (1) ◽  
pp. 012027
Author(s):  
Yang Sun
Keyword(s):  
3D Modeling ◽  
Recommendation System ◽  
Environmental Design ◽  
Reconstruction Method ◽  
Environment Design ◽  
Optimization Analysis ◽  
Interactive Environment ◽  
Computer Aided ◽  
Artificial Intelligence Algorithm ◽  
Analysis Of Knowledge

Abstract There are many p roblems and shortcomings in traditional 3D modeling tech of environment design, and there is a great room for amelioration in reconstruction method and reconstruction precision. As an intelligent means integrating computer, info network and big data, CAD can create a more experiential and interactive environment design atmosphere. Based on this, this paper first analyses the concept and connotation of 3D modeling of environmental design, then studies the computer-aided environment design, and finally gives the 3D modeling tech of computer-aided environmental design.

Developing and Using Computational Frameworks to Conduct Numerical Analysis and Calculate Temperature Profiles and to Classify Breast Abnormalities

2021 ◽  
pp. 230-249
Author(s):  
Kamila Fernanda F. da C. Queiroz ◽  
Marcus Costa de Araújo ◽  
Nadja Accioly Espíndola ◽  
Ladjane C. Santos ◽  
Francisco G. S. Santos ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
Texture Mapping ◽  
Computational Framework ◽  
Classification Framework ◽  
Graphical Interfaces ◽  
Computer Aided ◽  
Framework Approach ◽  
Cad Tool ◽  
User Friendly ◽  
Aided Diagnosis

In this chapter, computational tools that have been designed to analyze and classify infrared (IR) images will be presented. The function of such tools is to interconnect in a user-friendly way the algorithms that are used to map temperatures and to classify some breast pathologies. One of these performs texture mapping using IR breast images to relate temperatures measured to the points over the substitute tridimensional geometry mesh. Another computer-aided diagnosis (CAD) tool was adapted so that it could be used to evaluate individual patients. This methodology will be used when the computational framework approach for classification is described. Finally, graphical interfaces and their functionalities will be presented and explained. Some case studies will be presented in order to verify whether or not the computational classification framework is effective.

Sign in / Sign up

Export Citation Format

Share Document