Establishment Of Highly Precise CAE Analysis Model Using Automotive Bolts

2013

CBR

The manufacturing industry today due to worldwide competition is focused on shorter development cycle. In this situation, computer aided education (CAE) technology as a tool for simultaneous achievement of quality, cost and delivery (QCD) plays an important role. The hardware-software environment surrounding CAE has evolved.Though technological problems have been understood and general solutions have been derived and reflected in the CAE analysis software, research findings that boost the credibility of CAE have still not been incorporated fully enough into the development of design process. The real technical mechanism issue is not precisely capture.Therefore, it is important to clarify the real cause in CAE results through CAE simulation in order to assure product reliability and assurance. It is the aim of this study to realize the prediction of design analysis process through understanding of unclear technical mechanism in abnormal occurrences with the utilization of CAE simulation. In other words, it is the aim of this study to focus on issue in automotive transaxle oil seal leakage to understand, grasp, and visualize the main cause through usage of CAE analysis process. It is understood that the point of contact and pump volume was related and this could contribute towards seals quality design. Plus, the utilization of CAE analysis in prediction phase to realized design development is also possible.

Section: Visualization Of the Automotive Transaxle Oil Seal Leakage Pmentioning

confidence: 99%

High Precision CAE Analysis of Automotive Transaxle Oil Seal Leakage

Nozawa¹,

Ito²,

2013

CBR

“…In this section, the authors take prior research on bolted parts (Ueno, Yamaji, & Amasaka, 2009;Takahashi, Ueno, Yamaji, & Amasaka, 2010;Yamada & Amasaka, 2011;Fukuoka, Nomura, & Morimoto, 2006;Zhang & Jiang, 2004;Izumi, Yokohama, Iwasaki, & Sasaki, 2005;Onodera & Amasaka, 2011) to a new level by analyzing nut-bearing surfaces and then verifying the effectiveness of the highly precise technology component model that is created as a result of that analysis.…”

Section: Applying the Highly Precise Cae Technology Component Model Tmentioning

confidence: 99%

Applying a Highly Precise CAE Technology Component Model Automotive Bolt-Loosening Mechanism

Onodera¹,

Kozaki²,

2013

CUBR

In this study, the authors apply their highly precise Computer Aided Education (CAE) technology component model to explain the bolt-loosening mechanism in automotive parts that are secured with nuts and bolts-a problem that plagues manufacturers. This was accomplished by first visualizing the situation during prototype testing and then using CAE to accurately describe the problem. Specifically, three types of bolted pieces, each with a different pitch, were subjected to a prototype test in order to visualize their dynamic behavior along with changes in the amount of axial force applied to the bolted parts. And then, in conducting a high quality CAE analysis, the first step is to define the problem that needs to be solved and then model it using some kind of numerical formula. Acomputer is then used to analyze the model using an algorithm (calculation procedure). The appropriateness, applicable scope, and performance of the algorithm itself are developed based on theory, and the computer technology (calculation technique) is able to actually perform the calculations. The analysis verified that uneven stress on nut-bearing surfaces in particular was a primary cause of loosening on parts secured with nuts and bolts.In conclusion, this study applied the highly precise CAE technology component model to explain the problems associated with the loosening of parts tightened with nuts and bolts as well as to clarify the mechanism involved in similar types of technical problems affecting the auto industry. The desired results were obtained.

“…The simulation makes it possible to match results obtained through prototype testing and CAE analysis using absolute values, values for which there is no discrepancy between the two methods [1]- [3], [7]- [9].…”

Section: Step3: Aligning Prototype Testing and Caementioning

confidence: 99%

A study on a High Quality CAE Analysis Approach Model

Onodera

2011 IEEE/SICE International Symposium on System Integration (SII)

2011

Self Cite

In recent years, enhancing computer-aided engineering (CAE) analysis is the most pressing issue facing companies seeking to implement development design that results in high quality and shortened delivery times. This paper presents a "High Quality CAE Analysis Approach Model" that can be used to reform the business processes associated with development design. The model consists of the following steps: (1) defining the problem, (2) conducting prototype testing, (3) visualizing the problem, (4) employing the CAE technological element analysis model, (5) conducting a two-dimensional CAE analysis, (6) conducting a three-dimensional CAE analysis, (7) carrying out a predictive evaluation, (8) optimizing the design, and (9) verifying the results. As a specific application for this process, the authors focused on the ongoing problem of bolt loosening at automakers, using the model to explain the loosening mechanism by analyzing the contact stress at the bearing surfaces in bolted parts and gain new knowledge.I.