Mechanical behavior of bolted joints under steady heat conduction

Journal Article · Tue Feb 01 00:00:00 EST 1994 · Journal of Pressure Vessel Technology; (United States)

DOI:https://doi.org/10.1115/1.2929557· OSTI ID:5075671

Kumano, H ^[1]; Sawa, T; Hirose, T ^[2]

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1. Tokyo Metropolitan Inst. of Tech., Hino (Japan). Dept. of Mechanical Engineering
2. Yamanashi Univ., Kofu (Japan). Dept. of Mechanical Engineering

Bolted joints in heat exchangers, cylinder heads in combustion engines, and so on are subjected in heat fluxes. It is necessary to examine the mechanical behavior of such bolted joints under thermal changes in order to establish an optimal design. This paper deals with mechanical behavior of bolted joints, in which two hollow cylinders and two rectangular thick plates made of aluminum are fastened at room temperature by a bolt and nut made of steel, and are subjected to thermal changes or steady heat conduction. Temperature distributions of the joints are analyzed using the finite difference method. Then, methods of estimating an increment in axial bolt force and a maximum stress produced in the bolts are proposed. In the experiments, the aforementioned bolted joints are put in a furnace. Furthermore, the rectangular thick plates fastened by a bolt and nut are heated by an electric heater. Then, the temperature on the surfaces of the clamped parts and the bolts are measured with thermocouples. The increase in axial bolt force and the maximum stress produced in the bolts under steady heat conduction for thermal changes are measured. The analytical results are in fairly good agreement with the experimental ones.

• OSTI ID: 5075671
• Journal Information: Journal of Pressure Vessel Technology; (United States), Vol. 116:1; ISSN 0094-9930
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
33 ADVANCED PROPULSION SYSTEMS
BOLTED JOINTS
STRESS ANALYSIS
HEAT EXCHANGERS
INTERNAL COMBUSTION ENGINES
ALUMINIUM
COMPARATIVE EVALUATIONS
EXPERIMENTAL DATA
STEELS
TEMPERATURE DISTRIBUTION
TEMPERATURE MEASUREMENT
THEORETICAL DATA
THERMAL STRESSES
ALLOYS
DATA
ELEMENTS
ENGINES
EVALUATION
HEAT ENGINES
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
JOINTS
METALS
NUMERICAL DATA
STRESSES
420400* - Engineering- Heat Transfer & Fluid Flow
330100 - Internal Combustion Engines