Structural Optimization of an Outer Tie Rod Using RSM and Kriging

Kim, Young‐Jun; An, Kyo-Jin; Lee, Kwon-Hee; Park, Young-Chul

doi:10.5762/kais.2015.16.1.27

Cited by 3 publications

(1 citation statement)

References 9 publications

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“…At the same time, they studied the connection of the thread of the steel tie rod and found the most suitable thread structure through their test. Kim et al [18] discovered that tie rod buckling is the most severe load condition in the design of tie rod structures. Waybase et al [19] found that vibration and fatigue failure were the main causes of tie rod failure.…”

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%

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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Lightweight Design of an Outer Tie Rod Using Meta-Model Based Optimization Technique

Kim¹,

Park²,

Lee³

et al. 2015

Journal of the Korea Academia-Industrial cooperation Society

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The outer tie rod is one of the part of steering system, the optimization process was executed to find the lightweight design. The inner tie rod was considered in the optimum design of an outer tie rod. it could be closer to the test condition than in the case of considering outer tie rod only. The aluminum forging material was considered as a weight reduction proposal. The target of optimization was the shape of the minimum weight to resist at the load of buckling. RSM and Kriging interpolation method were applied as a optimization method to consider the nonlinear shape optimization problem. Then, 16.3%, 16.6% of weight reduction was obtained from the result comparing with that of the initial model. The results of meta model optimization was compared with that of finite element method. The error values of buckling load estimation were 2.6%, 2.04%. and those of weight estimation were 0.17%, 0.13%. Therefore, it seemed that the result of Kriging model could be obtained closer to optimum value than that of RSM model. Keywords :

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A Structural Design Method Using Ensemble Model of RSM and Kriging

Kim

Lee²

2015

Journal of the Korea Academia-Industrial cooperation Society

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The finite element analysis has become an essential process to investigate the structural performance in many industry fields. In addition, the computer's performance is improving rapidly, but in large design problems, there is a limit to apply the optimal design techniques. For this, it is general to introduce a metamodel based optimization technique. The method to generate an approximate model can be classified into curve fitting and interpolation, and each representative one is response surface model and kriging interpolation method. This study proposes an ensemble model made of RSM and kriging to solve a structural design problem. The suggested method is applied to the designs of two bar and automobile outer tie rod.

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Structural Optimization of an Outer Tie Rod Using RSM and Kriging

Cited by 3 publications

References 9 publications

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

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

Lightweight Design of an Outer Tie Rod Using Meta-Model Based Optimization Technique

A Structural Design Method Using Ensemble Model of RSM and Kriging

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