Development of satisfaction models for passenger car interior materials considering statistical and engineering aspects of design variables

Development of Satisfaction Models for Passenger Car Interior Materials considering Statistical and Engineering Aspects of Design Variables

Proceedings of the Human Factors and Ergonomics Society Annual Meeting ◽

10.1177/154193120304700507 ◽

2003 ◽

Vol 47 (5) ◽

pp. 821-825 ◽

Cited By ~ 1

Author(s):

Taebeum Ryu ◽

Kyunghee Oh ◽

Heecheon You ◽

Myung Hwan Yun

Keyword(s):

Passenger Car ◽

Design Variables

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Decomposition-Based Assembly Synthesis Based on Structural Stiffness Considerations

Volume 2: 28th Design Automation Conference ◽

10.1115/detc2002/dac-34083 ◽

2002 ◽

Cited By ~ 1

Author(s):

Naesung Lyu ◽

Kazuhiro Saitou

Keyword(s):

Genetic Algorithm ◽

Welded Joints ◽

Joint Stiffness ◽

Structural Stiffness ◽

Passenger Car ◽

Front Door ◽

Design Variables ◽

Door Panel ◽

Minimum Distortion

This paper presents a method for systematically decomposes product geometry into a set of components considering the structural stiffness of the end product. A structure is represented a graph of its topology, and the optimal decomposition is obtained by combining FEM analyses with a Genetic Algorithm. As a case study, the side frame of a passenger car is decomposed for the minimum distortion of the front door panel geometry, where spot-welded joints are modeled as torsional springs. First, the rates of the torsional springs are treated as constant values obtained in the literature. Second, they are treated as design variables within realistic bounds. By allowing the change in the joint rates, it is demonstrated that the optimal decomposition can achieve the smaller distortion with less amount of joint stiffness (hence less welding spots), than the optimal decomposition with the typical joint rates available in the literature.

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Decomposition-Based Assembly Synthesis for Structural Stiffness

Journal of Mechanical Design ◽

10.1115/1.1582879 ◽

2003 ◽

Vol 125 (3) ◽

pp. 452-463 ◽

Cited By ~ 18

Author(s):

Naesung Lyu ◽

Kazuhiro Saitou

Keyword(s):

Joint Stiffness ◽

Structural Stiffness ◽

Body Frame ◽

Passenger Car ◽

Weld Joints ◽

First Case ◽

Design Variables ◽

Door Panel ◽

Minimum Distortion

This paper presents a method that systematically decomposes product geometry into a set of components considering the structural stiffness of the end product. A structure is represented as a graph of its topology, and the optimal decomposition is obtained by combining FEM analyses with a Genetic Algorithm. As the first case study, the side frame of a passenger car is decomposed for the minimum distortion of the front door panel geometry. As the second case study, the under body frame of a passenger car is decomposed for the minimum frame distortion. In both case studies, spot-weld joints are considered as joining methods, where each joint, which may contain multiple weld spots, is modeled as a torsional spring. First, the rates of the torsional springs are treated as constant values obtained in the literature. Second, they are treated as design variables within realistic bounds. By allowing the change in the joint rates, it is demonstrated that the optimal decomposition can achieve the smaller distortion with less amount of joint stiffness (hence less welding spots), than the optimal decomposition with the typical joint rates available in the literature.

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Optimization of Passenger Car Door Impact Beam using Quasi Static CAE Analysis

International Journal of Vehicle Structures and Systems ◽

10.4273/ijvss.11.1.05 ◽

2019 ◽

Vol 11 (1) ◽

Cited By ~ 9

Author(s):

S.P. Sundar Singh Sivam ◽

Ganesh Babu Loganathan ◽

K. Saravanan ◽

V.G. Umasekar ◽

T.P. Mohammed Rameez

Keyword(s):

Computational Cost ◽

Static Problem ◽

Side Impact ◽

Component Level ◽

Passenger Car ◽

Vehicle Simulation ◽

Side Impacts ◽

Beam Design ◽

Design Variables ◽

The Impact

Automotive side impacts are particularly dangerous as location of impact is very close to the passenger, who can be immediately reached by the impacting vehicle. FMVSS 214 static is a US safety regulation for occupant safety during side impacts, in which the vehicle is tested at static loading conditions to measure its load baring capacity and integrity of side closures. The CAE load case, virtually simulating the test, was handled as a quasi-static problem in this study. Impact beam is a component that helps in improving vehicle passive safety performance during side impacts by minimizing door intrusion to the occupant cabin. It plays an important role in achieving side impact regulatory norms. Through this study, a mass optimized front door impact beam design was developed for a passenger car with the help of CAE simulations; FMVSS 214S regulation norms are met. Component thickness, material and cross section shape were the design variables considered for the study. A methodology to perform the component level simulation of the impact beam loading such that it replicates component behaviour during full vehicle simulation was developed. This has helped in reducing the total problem calculation time in solver. This also has minimized the computational cost for the project. CAE simulations required for the study were done using LS-DYNA. ANSA and PRIMER were used as pre-processors and hyper-graph and meta-post were used for post processing.

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