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Accession Number:

AD1112994

Title:

Heavy-Duty Diesel Piston Thermal Analysis: High-Temperature Alloys

Author(s):

• Byrd, Gerald
• Tess, Michael
• Gingrich, Eric
• Korivi, Vamshi

Author Organization(s):

• US Army Combat Capabilities Development Command, Ground Vehicle Systems Center

Report Date:

2020-10-15

Abstract:

Objective: Support a research program investigating the use of commercial and developmental high-temperature alloys in a heavy-duty diesel piston application. Methods: Perform a Steady-State Thermal-Stress Analysis to predict the piston temperature profile1. Given experimental measurements of piston surface heat flux (p.3) and subsurface temperature (p.4) for microalloyed steel (MAS) piston, calibrate the under-crown heat transfer coefficients (p.5) in the model. 2. Given experimental surface heat flux and calibrated heat transfer coefficients from previous step, model the piston temperature profiles (p.7) when changing to conductivity of high-temperature commercial alloys A286 (UNS S66286), 422 (S42200), DH31-EX (Daido Steel), and H10 (T20810). Perform a fatigue analysis (not shown in this presentation).

Document Type:

Conference:

Journal:

Pages:

15

File Size:

3.73MB

Contracts:

Grants:

Descriptors:

• heat transfer
• heat transfer coefficients
• heat flux
• high temperature
• engines
• flow rate
• thermal conductivity
• coefficients
• conductivity
• diesel engines
• heat energy
• heat resistant alloys
• heavy duty
• measurement
• experimental data
• pistons
• steady state
• stress analysis
• structural analysis
• surface temperature

Identifiers:

• HIGH TEMPERATURE ALLOYS
• HEAVY DUTY DIESEL PISTONs

SubjectCategory:

• Propulsion, Engines and Fuels
• Physics
• Materials

Communities of Interest:

• Energy and Power Technologies

Distribution Statement:

Approved For Public Release

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