Thermal Fatigue Analysis of Cast Aluminum Cylinder Heads

Su, Xuming; Zubeck, Michael; Lasecki, John; Engler-Pinto, Carlos; Tang, Chao; Şehitoğlu, Hüseyin; Allison, Jared

doi:10.4271/2002-01-0657

Cited by 24 publications

(19 citation statements)

References 7 publications

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“…The rate of growth of oxidation layer thickness is proportional to the square root of time in the absence of cyclic loading; and the rate of growth is much higher in cyclic loading conditions where the oxidation layer repeatedly breaks and the fresh surface is exposed to the environment (Ogarevic et al, 2001). The details of the modeling of oxidation damage and creep damage were provided by Su et al (2002) in their investigation of cylinder head failures.…”

Section: © Woodhead Publishing Limited 2011mentioning

confidence: 99%

“…The structural modeling of thermo-mechanical fatigue failures of diesel cylinder heads was investigated by Koch et al (1999), Lee et al (1999), Maassen (2001), Su et al (2002), Zieher et al (2005), and Barlas et al (2006). Su et al (2002) analyzed the cast aluminum cylinder head, while Zieher et al (2005) analyzed the cast iron cylinder head (gray cast iron, compacted graphite iron, ductile iron). Koch et al (1999) developed a simulation tool to calculate the strains and stresses as a function of time for a defined engine operating cycle.…”

Section: Thermo-mechanical Fatigue Life Prediction Of Cylinder Headmentioning

confidence: 99%

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Durability and reliability in diesel engine system design

Xin¹

2013

Diesel Engine System Design

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Section: © Woodhead Publishing Limited 2011mentioning

confidence: 99%

Section: Thermo-mechanical Fatigue Life Prediction Of Cylinder Headmentioning

confidence: 99%

Durability and reliability in diesel engine system design

Xin¹

2013

Diesel Engine System Design

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“…According to the introduction, due to lack of information on the behavior of hardening, softening and viscosity of materials, the analysis of cylinder heads is mostly based on simple models of material behavior like elastic-plastic, and the effects of viscosity and creep of cylinder heads are less taken into consideration. Aluminum alloy has creep behavior at about 300 • C and viscosity should also be taken into account (Su et al, 2002;Thomas et al, 2002Thomas et al, , 2004Koch et al, 1999). The main objective of this study is to simulate thermo-mechanical behavior of cylinder heads based on the two-layer viscoplasticity model.…”

Section: Introductionmentioning

confidence: 99%

Analysis of fatigue cracks of cylinder heads in diesel engines

Ashouri

Beheshti

Ebrahimzadeh

2016

jtam

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Loading conditions and complex geometry have led cylinder heads to become the most challenging parts of diesel engines. One of the most important durability problems in diesel engines is due to cracks in the valves bridge area. The purpose of this study is thermo--mechanical analysis of cylinder heads of diesel engines using a two-layer viscoplasticity model. The results of the thermo-mechanical analysis indicate that the maximum temperature and stress occurr in the valves bridge. The results of the finite element analysis correspond with the experimental tests carried out by researchers, and illustrate cracks in cylinder heads in this region. The results of the thermo-mechanical analysis show that when the engine is running, the stress in the region is compressive, caused by thermal loading and combustion pressure. When the engine is shut off, the compressive stress turns into tensile stress because of assembly loads. The valves bridge is under cyclic tensile and compressive stress state and thus is subject to low cycle fatigue. After several cycles fatigue cracks will appear in this region. The lifetime of this part can be determined through finite element analysis instead of experimental tests. The viscous strain is greater than the plastic strain which is not negligible.

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“…Some researches were devoted to fatigue life assessment under thermomechanical loads. Su et al (2002) performed a thermoelastic high cycle fatigue and creep analysis in ABAQUS for the engine cylinder head and validated their stress analysis results by means of some installed strain gauges. Silva (2006) analyzed the thermomechanical damage fatigues in the pistons.…”

mentioning

confidence: 99%

Experimentally Validated Combustion and Piston Fatigue Life Evaluation Procedures for the Bi-Fuel Engines, Using an Integral-Type Fatigue Criterion

Shariyat

Sola

Jazayeri

2016

Lat. Am. j. solids struct.

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A relatively complete procedure for high cycle fatigue life assessment of the engine components is outlined in the present paper. The piston is examined as a typical component of the engine. In this regard, combustion process and transient heat transfer simulations, determination of the instantaneous variations of the pressure and temperature in the combustion chamber, kinematic and dynamic analyses of the moving parts of the engine, thermoelastic stress analyses, and fatigue life analyses are accomplished. Results of the simulation are compared with the test data to verify the results. The heat transfer results are validated by the experimental results measured by the Templugs. The nonlinear multipoint contact constraints are modeled accurately. Results of the more accurate available fatigue criteria are compared with those of a fatigue criterion recently proposed by the first author. These results are also evaluated by comparing them with the experimental durability tests. The presented procedure may be used, e.g., to decide whether it is suitable to convert a gasoline-based engine to a bi-fuel one. Results of the various thermomechanical fatigue analyses performed reveal that the piston life decreases considerably when natural gas is used instead of gasoline.

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Thermal Fatigue Analysis of Cast Aluminum Cylinder Heads

Cited by 24 publications

References 7 publications

Durability and reliability in diesel engine system design

Durability and reliability in diesel engine system design

Analysis of fatigue cracks of cylinder heads in diesel engines

Experimentally Validated Combustion and Piston Fatigue Life Evaluation Procedures for the Bi-Fuel Engines, Using an Integral-Type Fatigue Criterion

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