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

Abstract

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.

Experimental and numerical analysis of bolted two plates using a developed shear theory

“…Qi et al (2021) simulated experimentally materials with Abaqus software and compared the results. He et al (2021) studied the high-temperature load distribution of a bolt joint structure. A two-dimensional asymmetrical model of the bolt connection structure was created and a modification of the standard metric thread profile was made according to the thread load distribution, taking into account certain properties.…”

Experimental, Software and Topological Optimization Study of Unpredictable Forces in Bolted Connections

“…Han et al [11] simulated experimental materials with Abaqus software and compared the results. He et al [12] investigated the high-temperature load distribution of a bolt joint structure. A two-dimensional asymmetrical model of the bolt connection structure was created and a modification of the standard metric thread profile was made according to the thread load distribution, taking into account certain properties.…”