fem1 - FEM in Automotive Body Structures FEM Applications...

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1 FEM in Automotive Body Structures FEM Applications • Around 1982, FEM application becomes popular in Automotive Industry – 60s and 70s : Beam/Frame Models (First Order Analysis Type) – 80s : MSC/NASTRAN (1983 MacNeal’s QUAD4 element , and its Improvement) made shell description of automotive bodies – 80s : DYNA made tremendous success in crash simulation – 90s : LS/DYNA and PAM/Stamp make quite success in sheet metal forming simulation
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2 Livermore Software Technology Corporation http://www.lsdyna.com/
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3 Three Aspects • Stiffness/Strength – MSC/NASTRAN or ABAQUS – Strength for Spot Welding Portion • Noise & Vibration – MSC/NASTRAN – Acoustics Analysis (BEM) • Crashworthiness – LS/DYNA or PAM/Crash by ESI Group Analysis Involved • Static – Stiffness and Strength • Normal Modes Analysis – Construct modal mass and stiffness matrices • Transient Response Analysis • Frequency Response Analysis • Impact/Crash Analysis
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4 Finite Elements • Bar/Beam Elements
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fem1 - FEM in Automotive Body Structures FEM Applications...

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