Failure analysis of a diesel engine cylinder head based on finite element method

The paper presents modeling and calculations of multi-bolted connections at the assembly stage on an example of the engine cylinder head-block connection. The physical model of the connection was introduced as a combination of three subsystems: the set of bolts, the joined element and the contact layer between the joined element and the rigid support. The finite element method (FEM) was used for the modeling. Bolts were replaced with hybrid elements. The joined element was modeled with spatial finite elements. The Winkler model of the contact layer has been taken into consideration. The truth of the theorem has been examined, according to which non-linearity of the contact layer has a negligible impact on the final values of the bolt forces in the case of sequential preloading of the multi-bolted connection. The results of the calculations of a selected multi-bolted connection have been compared with the experimental results.

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Micromechanical Failure Analysis of Thin Plain Weave Textile Composites Using the Finite Element Method

45th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics & Materials Conference ◽

10.2514/6.2004-1929 ◽

2004 ◽

Author(s):

Ryan Karkkainen ◽

Bhavani Sankar

Keyword(s):

Finite Element Method ◽

Finite Element ◽

Failure Analysis ◽

Textile Composites ◽

The Finite Element Method ◽

Plain Weave ◽

Element Method

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Dynamic failure analysis of concrete dams under air blast using coupled Euler-Lagrange finite element method

Frontiers of Structural and Civil Engineering ◽

10.1007/s11709-018-0465-7 ◽

2018 ◽

Vol 13 (1) ◽

pp. 15-37 ◽

Cited By ~ 4

Author(s):

Farhoud Kalateh

Keyword(s):

Finite Element Method ◽

Finite Element ◽

Failure Analysis ◽

Dynamic Failure ◽

Concrete Dams ◽

Air Blast ◽

Lagrange Finite Element ◽

Element Method

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Smoothed Finite Element Methods for Predicting the Mid to High Frequency Acoustic Response in the Cylinder-Head Chamber of a Diesel Engine

International Journal of Computational Methods ◽

10.1142/s0219876219500609 ◽

2019 ◽

Vol 17 (09) ◽

pp. 1950060

Author(s):

Tengfei Dai ◽

Xia Jin ◽

Huaze Yang ◽

Tianran Lin ◽

Yuantong Gu

Keyword(s):

Finite Element Method ◽

Finite Element ◽

Diesel Engine ◽

Modeling And Simulation ◽

Finite Element Methods ◽

High Frequency ◽

Cylinder Head ◽

High Frequency Range ◽

Acoustic Response ◽

Frequency Range

Modeling and simulation of the acoustic response in enclosed cavities of a diesel engine are of great significance for optimal design of an engine to achieve a better acoustic performance. Nevertheless, the use of the traditional finite element method (FEM) for the mid to high frequency acoustic prediction is limited by the well-known numerical dispersion errors and the tedious preprocessing of the model. Smoothed finite element methods (SFEMs) proposed originally for solid mechanics have been employed for the modeling of acoustic problems in the low to medium frequency ranges whilst acoustic modeling in the mid to high frequency range remains untouched. This paper comprehensively investigates into the performance of SFEMs in modeling and simulation of mid to high frequency acoustic problems. It is shown that the mass-redistributed edge-based smoothed finite element method (MR-ES-FEM) can yield an excellent prediction result in the mid to high frequency range in terms of accuracy, efficiency and robustness. The MR-ES-FEM is also used to simulate sound propagation in a cylinder head chamber of a four-cylinder diesel engine to prove its effectiveness. The findings presented in this paper offer an in-depth insight for engineers to select suitable numerical methods for solving mid to high frequency acoustic problems in the design of diesel engines.

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