Thermal Plastic-Elastic Analysis in Consideration of Metallurgical Microstructure

[+] Author and Article Information
Tsuyoshi Takahashi

Department of CAE & System Promotion, Hokkaido Engineering Group, ISUZU Motors limited, Chitiose, 066-0009 Japane-mail: tsuyoshi-takahashi@isuzu.co.jp

Yoshio Sugimura

Department of CAE & System Promotion, Performance CAE Group, ISUZU Motors limited, Fujisawa city, Japane-mail: yoshio-sugimura@isuzu.co.jp

Katsuhiko Sasaki

Division of Mechanical Science, Hokkaido University, Sapporo City, 060-8628 Japane-mail: katsu@eng.hokudai.ac.jp

J. Manuf. Sci. Eng 126(1), 25-32 (Mar 18, 2004) (8 pages) doi:10.1115/1.1645875 History: Received September 01, 2003; Online March 18, 2004
Copyright © 2004 by ASME
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DAS vs Mechanical properties (a) DAS vs ultimate strength (b) DAS vs elongation
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Cooling rates Ca, Cb, Cc
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DAS vs Cooling rate for Cc
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Cylinder head photos in Cross Section
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Microstructure photos for upper deck, middle part and lower deck of Cylinder Head (a) upper deck (b) middle part (c) lower deck
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Measured mechanical properties for samples cut away from upper deck, middle part and lower deck (a) 0.2% proof stress (b) ultimate strength
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Solidification analysis model
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Microstructure analysis for section A-A in Fig. 7 (a) DAS profile (b) Porosity profile
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Measured vs Calculated DAS and porosity (a) DAS (b) porosity
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Structural analysis model for 2 cylinders
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Equivalent plastic strain profile for fire contact areas after 1st cycle
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Effects of localizing mechanical properties on fatigue life for area around glow plug hole
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Maximum principal stress at full load running
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Fatigue life vs DAS (DAS range 45-65 μm)




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