First Order Analysis - New CAE Tools for Automotive Body Designers

Nishigaki, Hidekazu; Nishiwaki, Shinji; Amago, Tatsuyuki; Kojima, Yoshio; Kikuchi, Noboru

doi:10.4271/2001-01-0768

Cited by 47 publications

(10 citation statements)

References 9 publications

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“…Several specialized software tools have been developed to aid the BIW development phase. Toyota Central R&D Labs proposed a first-order analysis concept for the BIW designers and developed finite-element-analysis software which can give static stiffness, NVH (Noise, vibration, and harshness) and crashworthiness analyses [1][2][3][4][5]. Hou et al [6][7][8] developed an intelligent CAE system "ACD-ICAE" for auto-body concept design.…”

Section: Fig 1 the Biw Concept Modelmentioning

confidence: 99%

A Two-Level Cross-Sectional Optimization Approach for Automotive Body Concept Design

Qin

Liu

et al. 2018

Automot. Innov.

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Concept design is vital important in development of auto-body and it has great effects on later design work. In this paper, a twolevel cross-sectional optimization approach is presented to shorten concept design cycles. First, an exact structural analysis approach for spatial semi-rigid framed structures, i.e., the transfer stiffness matrix method proposed in our previous study, is adopted for both static and dynamic analyses of body-in-white (BIW) structure. A two-level cross-sectional optimization approach is then proposed for an automotive BIW lightweight design, and genetic algorithm is used to solve the optimization models. Afterward, an object-oriented MATLAB toolbox, using distributed parallel computing techniques, is developed to promote the concept design of the BIW structure. Finally, relevant numerical examples demonstrate the validity and accuracy of the proposed method.

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Section: Fig 1 the Biw Concept Modelmentioning

confidence: 99%

A Two-Level Cross-Sectional Optimization Approach for Automotive Body Concept Design

Qin

Liu

et al. 2018

Automot. Innov.

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“…It included a topology optimization method using function oriented elements and a joint analysis method considered nonlinear behavior using a simplified model. (Nishigaki et al, 2001) S. Dondersa suggested a reduced beam and joint modeling approach to analyze and optimize the global bending and torsion modes of a vehicle body. (Donders, Stijn et al, 2009) BMW proposed a concept modeling process which is based on the FE "Beams and Shells" concept model, with arbitrary beam cross sections, which is used for early concept phase car body structural optimization with a special focus on the NVH (Noise, Vibration, Harshness) performance.…”

Section: Investigation Of Documents Related To the Concept Design Promentioning

confidence: 99%

Development of a concept design process for an automotive body structure using a knowledge-based database

Heo

Kang³

et al. 2016

JAMDSM

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The purpose of this study is to propose a concept design process for an automotive body structure using technical information on the major joints and members of vehicles. First, in order to collect the technical information on major joints and members, 43 vehicles were selected using benchmark data. The collected technical information for the selected vehicles was the cross sectional shapes of each joint and member which were used for the analysis of joint stiffness, crashworthiness and static stiffness of the member to make a database along with cross section properties. This study applied a 'What If Study' technique to perform a concept design of an automotive body using the analyzed information and selected cross section meeting the design objectives. The criteria for the selection of the cross section were defined by subdividing the defined design objectives of an automotive body structure and constraints into members and joints. In order to configure an analysis model of an automotive body structure using the selected cross section, a shape parametric model was used and static stiffness, dynamic stiffness and crashworthiness were assessed to evaluate the configured automotive body structure. The evaluation result showed that the crashworthiness and static/dynamic stiffness were improved by 10% and 5% respectively compared to an existing body structure. In addition, the weight of the body structure was reduced by 4.2%. Through this study, the process that can rapidly and effectively derive and evaluate the concept design of an automotive body structure was defined. It is expected that, henceforth, this process will be helpful for the study of automotive body structures.

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“…An efficient way to find good lightweight designs for vehicle structures is to use different tools for structural optimization. 94,23,81,26,4 Structural optimization includes several approaches, e.g. material, 4 size, shape and topology optimization, where size and shape optimization are used for fixed topologies and for improvements of existing structures.…”

Section: E Vehicle System Design and Lightweight Structuresmentioning

confidence: 99%

A Critical Review of Optimization Methods for Road Vehicles Design

Gobbi

Haque

Papalambros³

et al. 2006

11th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference

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[Abstract] The paper deals with the optimal design of road vehicles and their subsystems. The highly competitive nature of the automotive industry demands constant product innovation and reduction in product development both in time and cost while satisfying performance and legal requirements. Optimization procedures provide a scientific approach to automatically determine the most efficient designs under the target operating environment. Particular attention is devoted to the class of methods pertaining to complex system design optimization, as well as the approaches for the optimal design of complex systems under uncertainty. A critical review of the optimization methods used for solving road vehicle system design problems is reported. Some examples of design optimization are given in the field of vehicle system dynamics, powertrain design, internal combustion engine design, active and passive safety, vehicle system design and lightweight structures, advanced automotive electronics.

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First Order Analysis - New CAE Tools for Automotive Body Designers

Cited by 47 publications

References 9 publications

A Two-Level Cross-Sectional Optimization Approach for Automotive Body Concept Design

A Two-Level Cross-Sectional Optimization Approach for Automotive Body Concept Design

Development of a concept design process for an automotive body structure using a knowledge-based database

A Critical Review of Optimization Methods for Road Vehicles Design

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