Study of Fatigue Strength of Aluminium Alloy A5056 Bolts

Hashimura, Shinji; Kamibeppu, Kazuki

doi:10.1299/jsmemecj.2019.s11303

Cited by 1 publication

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“…The material of the engine cylinder head bolt is steel, and the connecting parts are usually made of aluminum alloy. Because the creep temperature of aluminum alloy is low, the use of aluminum alloy makes the bolt joint structure more prone to creep relaxation, which leads to premature failure of the bolt connection (Hashimura et al, 2019;An et al, 2011;Thoppul et al, 2009). The bolt connection structure of the cylinder head is affected by a variety of environments in practical use, especially in high temperature.…”

Section: Introductionmentioning

confidence: 99%

Stress and load distribution analysis in bolt connection with modified thread profile under high temperature conditions

He¹,

Zhang²,

Guo³

et al. 2021

Journal of Theoretical and Applied Mechanics

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In this paper, the load distribution of a bolt connection structure with a variable thread profile at high temperature is investigated. The parameters of time-hardening creep model of aluminum alloy at high temperature were obtained by fitting the uniaxial creep tensile test data of aluminum alloy at 250 • C. Based on ABAQUS, a two-dimensional axisymmetric model of the bolt connection structure was established, and according to the thread load distribution considering linear elasticity, plasticity and creep characteristics, modification of standard metric thread profile was carried out. The load distribution law of the thread of the modified bolt connection structure were investigted. The results show that the load--bearing ratio of the first thread can be significantly reduced and the load-bearing distribution uniformity of all threads can be improved when the modified thread is applied to the bolt connection structure.

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Section: Introductionmentioning

confidence: 99%