Probabilistic Design for Strength Analysis of Tie Rod Subjected to Tensile, Compressive, and Shear Load by Using Finite Element Methods

Godase, Abaso J.; Kulkarni, Purushottam; Katekar, S. D.

doi:10.1007/978-3-030-16962-6_12

Cited by 1 publication

(1 citation statement)

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“…Waybase et al [19] found that vibration and fatigue failure were the main causes of tie rod failure. Godase et al [20] and Du et al [21] pointed out that the strength of tie rods is mainly influenced by bending, tension, load, and shear, among which the shear resistance of tie rods is often neglected. And Godase et al found that the geometric parameters of the tie rod, such as its outer diameter and inner diameter, have a significant effect on shear stress.…”

Section: Introductionmentioning

confidence: 99%

Thermal Stress Compensation for an Aircraft Engine Duct System Based on a Structural Redesign of Tie Rods

Li,

Feng,

Yuan

et al. 2023

Applied Sciences

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The reliability of the aircraft engine duct system is of paramount importance as it directly affects the safety of the aircraft, particularly under high-temperature and high-pressure cycles. In this study, ANSYS Workbench was used for finite element analysis, and a sleeve-type tie rod structure was proposed to address the critical problem of tie rod tearing during the operation of the duct system, thereby optimizing thermal stress compensation for the duct system. The research results show the following: (1) The anchor of the traditional tie rod imposes displacement constraints on the thermal deformation of the duct system, leading to stress concentration and even structural failure in the connection area between a duct and a tie rod. (2) The improved sleeve-type tie rod provides greater axial displacement freedom for the duct, effectively mitigating stress concentration phenomena. (3) Taking a worst-case scenario of 537.78 °C and 2 MPa as an example, the sleeve-type tie rod proposed in this paper can reduce the stress at the tie rod connection from 757.61 MPa to less than 25 MPa, a reduction of more than 96%. The original tie rod tearing problem is solved, and the maximum stress of the whole duct system is reduced to 459.25 MPa, which is below the yield strength.

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Section: Introductionmentioning

confidence: 99%