Heavy-Duty Diesel Piston Thermal Analysis: High-Temperature Alloys
[Technical Report, Briefing Charts]
US Army Combat Capabilities Development Command, Ground Vehicle Systems Center
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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.
- Reciprocating and Rotating Engines
- Properties of Metals and Alloys