Fracture failure analysis of KL crankshaft

Jiao, Anyuan; Liu, Bing-Hong; Chen, Xiaomei; Zou, Xiaobin; Wang, Fenghui

doi:10.1016/j.engfailanal.2020.104498

Cited by 20 publications

(3 citation statements)

References 9 publications

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“…Gomes et al [22] investigated the seven cases of crankshaft's failures in marine diesel engines and listed some of the failure causes, followed by the proposition of some design modifications. Jiao et al [23] did the modal and fatigue analysis of a crankshaft in addition to the physical and chemical scrutiny and introduced the main cause of crankshaft failure as fatigue resulted from overload. Kubet et al [24] provided the static, modal, and harmonic analyses.…”

Section: Figure 1 Individual Components Of the Assembly Including Pis...mentioning

confidence: 99%

Thermo-Mechanical Analysis of a Typical Vehicle Engine Using PTC-Creo

Mahmoudi

2022

j. of mech. mater. and mech. res.

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In this work, a typical vehicle engine is modeled within PTC-Creo software, and its thermal, mechanical, and thermo-mechanical performance are evaluated. This is followed by the vibrational, fatigue, and buckling analysis of the assembly of components, which are the predominant failure causes. The results show that the least temperature gradient occurs in the center of the pin, which connects the piston to the connecting rod, the maximum displacement is seen just below the piston head, and the thermo-mechanical failure is caused mostly (about 85%) by the mechanical load rather than the thermal one. Also, in fatigue analysis, the minimum and maximum values for the safety factor are 0.63 and 5, respectively. The results can prevent the reoccurrence of similar failures and help the enhancement of the components’ design and manufacturing process.

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Section: Figure 1 Individual Components Of the Assembly Including Pis...mentioning

confidence: 99%

Thermo-Mechanical Analysis of a Typical Vehicle Engine Using PTC-Creo

Mahmoudi

2022

j. of mech. mater. and mech. res.

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“…It mainly consisted of the engine block, main bearing cover, main bearing shell, crankshaft, connecting bolts, and others. Jiao et al investigated the strength reliability of the KL crankshaft by carrying out the physicochemical analysis, numerical simulation analysis and experimental research 21 . The specific location of crankshaft fatigue failure, analyzed the causes of fatigue failure, and proposed improvement measures for crankshaft strength in the research.…”

Section: Introductionmentioning

confidence: 99%

“…Jiao et al investigated the strength reliability of the KL crankshaft by carrying out the physicochemical analysis, numerical simulation analysis and experimental research. 21 The specific location of crankshaft fatigue failure, analyzed the causes of fatigue failure, and proposed improvement measures for crankshaft strength in the research. Vrublevskyi et al researched the friction performance of crankshaft and main bearing shell, and revealed the influence law of design parameters on frictional reliability.…”

Section: Introductionmentioning

confidence: 99%

A multilevel multiobjective coordination matching design technique for the main bearing assembly structure of a diesel engine

Zhao,

Shi,

et al. 2023

Energy Science & Engineering

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The main bearing assembly structure is one of the most important main load‐bearing structures of a diesel engine. The working loads of this structure increases dramatically with the increase of the power density of diesel engines, resulting in the problem of unsatisfactory reliability coordination design in restricted design space, while the mechanisms for coordinated design are still at the blank stage. Aiming at the problem, a multilevel multiobjective coordination matching design technique is innovatively proposed in this paper. This technique is characterized by a multilevel multiobjective coordination evaluation system for the assembly structure and its components based on the improved analytic hierarchy process. The finite element model and mathematical model of the main bearing assembly structure are established to realize the joint of finite element technology and optimization technology for coordination matching design. By carrying out verification experiments, the strength coordination, deformation coordination and contact strength coordination of the assembly structure increase by 13.91%, 14.96%, and 2.63%, respectively, after matching design, while the mass coordination remains almost constant meeting the lightweight design requirements. The overall coordination of the main bearing assembly structure is improved by 11.10%, achieving the goal of matching design of the main bearing assembly structure. The results show that the coordination evaluation system can quantitatively characterize the coordination relationship of the assembly structure and the multi‐reliability of components, and it is a feasible coordination evaluation method. The demonstrated coordination evaluation system and coordination matching design modeling approach provide important theoretical guidance for the matching design of complex assembly structures.

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