Comparison of Adaptive Procedures for Coupled Finite Element Analysis of Thermal Strain History During Continuous Solidification Processes

2009 ◽  
Author(s):  
J.R. Boehmer ◽  
G. Funk ◽  
M. Jordan ◽  
F.N. Fett
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Thermal Strain ◽  
Strain History ◽  
Element Analysis ◽  
Adaptive Procedures ◽  
Solidification Processes

Finite Element Analysis of the Piston Thermal Load in a Diesel Engine

2013 ◽  
Vol 459 ◽  
pp. 304-309
Author(s):  
Qing Ping Zheng ◽  
Chun Yan Ma ◽  
Jie Zhong Zhang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Diesel Engine ◽  
Thermal Load ◽  
Thermal Strain ◽  
Three Dimensional ◽  
Maximum Temperature ◽  
Ring Groove ◽  
Element Analysis ◽  
Three Dimensional Modeling

Three-dimensional modeling and finite element analysis on the diesel engine piston is carried out in the paper. The distribution of temperature, stress and strain within piston at the rated conditions of the engine are obtained from the simulation. The calculated temperature is consistent with the results of the piston surface temperature which is obtained by hardness plug method, thus confirming the model's validity. The calculated maximum temperature is 374 °C and the minimum temperature is 144 °C. The maximum stress is 118MPa located between the piston skirt above the pin hole and the third ring groove. The maximum thermal strain appears at the piston top with the value of 6.29×10-3. Finally, the temperature simulation of the piston adopted oil-splashing cooling is implemented. It is proved that thermal load can be further reduced through cooling measure.

Thermal strain along optical fiber in lightweight composite FOG : Brillouin-based distributed measurement and finite element analysis

2014 ◽  
Author(s):  
Shu Minakuchi ◽  
Teruhisa Sanada ◽  
Nobuo Takeda ◽  
Shinji Mitani ◽  
Tadahito Mizutani ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Optical Fiber ◽  
Thermal Strain ◽  
Element Analysis ◽  
Distributed Measurement

Multiaxial Fatigue Analysis on Reeled Steel Tube Umbilical

2011 ◽  
Author(s):  
Qingquan Li ◽  
Hezhen Yang ◽  
Huajun Li
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Fatigue Life ◽  
Fatigue Analysis ◽  
Steel Tube ◽  
Multiaxial Fatigue ◽  
Strain History ◽  
Critical Element ◽  
Load History ◽  
Element Analysis

Multiaxial fatigue analysis on reeled steel tube umbilical is proposed based on finite element analysis (FEA) results. Due to the complexity of the umbilical geometry, stresses and strains field becomes multiaxial, worsening the fatigue resistance. Reel-lay method, is one of the most efficient and cost-effective methods of pipeline installation. However, if installed by reel-lay method, material properties of the umbilical change may have an influence in fatigue performance of the line. Finite element analysis is applied with contact and formulation, and the load history through reel, aligner and straightener is simulated. The strain history of the whole modeling process in critical element is given, and the properties’ change after the load history is discussed. Then, principal stress criteria and Brown–Miller criteria (both combined with critical plane approach) based on FEA results were used to do fatigue life prediction of reeled and non-reeled model, respectively. The results indicate that reel-lay method does have a great influence on the fatigue life of steel tube umbilical, so the influence of installation on the umbilical fatigue must be considered when reel-lay method is adopted.

Multiaxial Fatigue Analysis on Reeled Steel Tube Umbilical

2013 ◽  
Vol 135 (1) ◽  
Author(s):  
Hezhen Yang ◽  
Qingquan Li ◽  
Huajun Li
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Fatigue Life ◽  
Fatigue Analysis ◽  
Steel Tube ◽  
Multiaxial Fatigue ◽  
Strain History ◽  
Critical Element ◽  
Load History ◽  
Element Analysis

Multiaxial fatigue analysis on reeled steel tube umbilical is proposed based on finite element analysis (FEA) results. Due to the complexity of the umbilical geometry, the stresses and strains field becomes multiaxial, worsening the fatigue resistance. The reel-lay method is one of the most efficient and cost-effective methods of umbilical installation. However, if installed by the reel-lay method, material properties of the umbilical change may have an influence in fatigue performance of the line. Finite element analysis is applied with contact formulation, and the load history through the reel, aligner, and straightener is simulated. The strain history of the whole modeling process in the critical element is given, and the properties' change after the load history is discussed. Then, the principal stress criterion and the Brown–Miller criterion (both combined with the critical plane approach) based on FEA results are used to do fatigue life prediction of reeled and nonreeled models. The results indicated that a reel-lay method has a great influence on the fatigue life of steel tube umbilical, so the influence of installation on the steel tube umbilical fatigue must be considered when the reel-lay method is adopted.

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