Engineering Computations: Volume 39 Issue 6

Repair limit policy of aircraft component based on extended uncertain random renewal reward process

Chunxiao Zhang, Xinwang Li, Xiaona Liu, Qiang Li, Yizhou Bai

The purpose of this paper is to focus on an optimizing maintenance policy with repair limit time for a new type of aircraft component, in which the lifetime is assumed to be an…

Numerical simulation of the influence of mixed sand on erosion characteristics of centrifugal pump

Yong Wang, Xiaolin Wang, Jie Chen, Gangxiang Li, Houlin Liu, Wei Xiong

The purpose of the paper is to predict the erosion rate of the components of centrifugal pump under certain operating condition to identify the maximum erosion area and to discuss…

An evolutionary structural optimization algorithm for the analysis of light automobile parts using a meshless technique

Diogo Gonçalves, Joel Lopes, Raul Campilho, Jorge Belinha

The purpose of the present work is to develop the combination of the radial point interpolation method (RPIM) with a bi-directional evolutionary structural optimization (BESO…

3D large strain hierarchical multiscale analysis of soft fiber-reinforced tissues: application to a degraded arterial wall

Saeed Hatefi Ardakani, Peyman Fatemi Dehaghani, Hesam Moslemzadeh, Soheil Mohammadi

The purpose is to analyze the mechanical behavior of the arterial wall in the degraded region of the arterial wall and to determine the stress distribution, as an important factor…

Uncertainty quantification for correlated variables combining p-box with copula upon limited observed data

Zhanpeng Shen, Chaoping Zang, Xueqian Chen, Shaoquan Hu, Xin-en Liu

For fast calculation of complex structure in engineering, correlations among input variables are often ignored in uncertainty propagation, even though the effect of ignoring these…

Vibrations of complex composite double-column system by extended Laplace transform method

X.Z. Zhao, Peter Chang

Double-beam/column systems have drawn much attention in many engineering fields. This work aims to present the free and forced vibrations of a novel and complex double-column…

Thin Plates Spline Based Differential Quadrature for numerical solution of groundwater flow

Abdol Mahdi Behroozi, Mohammad Vaghefi

The main purpose of this paper is presenting Thin Plates Spline-based Differential Quadrature (TPS-DQM) as a meshless numerical method to solve the steady and transient…

A new multi-fidelity surrogate modelling method for engineering design based on neural network and transfer learning

Mushi Li, Zhao Liu, Li Huang, Ping Zhu

Compared with the low-fidelity model, the high-fidelity model has both the advantage of high accuracy, and the disadvantage of low efficiency and high cost. A series of…

Simplification and further optimization of spatial cable-truss structure without inner ring cables

Jian Lu, Suduo Xue, Renjie Liu, Xiongyan Li

In order to optimize SCSWIRC, the simplification and further optimization method is proposed. SCSWIRC's optimization includes two levels. The first level refers to simplifying…

A practical discrete sizing optimization methodology for the design of high-rise concrete buildings

Haopeng Lou, Zhibin Xiao, Yinyuan Wan, Fengling Jin, Boqing Gao, Chao Li

In this article, a practical design methodology is proposed for discrete sizing optimization of high-rise concrete buildings with a focus on large-scale and real-life structures.

The effect of ply drop-off on tensile strength of thermoplastic carbon fiber composite: a numerical and experimental study

Daouda Kane, Guilherme Gomes, Vanessa Macanhan, Antonio Ancelotti Jr

In laminate composite structure design, it is common to deal with the need of varying thickness to reach project requirement or improve performance. This change of thickness can…

DRN-GAN: an integrated deep learning-based health degradation assessment model for naval propulsion system

Jingtong Gao, Shaopeng Dong, Jin Cui, Mei Yuan, Juanru Zhao

The purpose of this paper is to propose a new deep learning-based model to carry out better maintenance for naval propulsion system.

Free vibration analysis of fiber-metal laminated composite plates using differential, generalized and harmonic quadrature methods: experimental and numerical studies

Sinan Maraş, Mustafa Yaman

This study aims to demonstrate the numerical application of differential quadrature (DQ) methods and show the experimental application of free vibration analysis of fiber-metal…

How opening windows and other measures decrease virus concentration in a moving car

Shuai Shu, Thomas Elliot Mitchell, Megan Rhian Rosemary Wiggins, Sizeng You, Hywel Thomas, Chenfeng Li

Due to the ongoing Covid-19 pandemic, ventilation in a small cabin where social distancing cannot be guaranteed is extremely important. This study aims to find out the best…

An optimal derivative-free King's family for multiple zeros and its dynamics

Litika Rani, Munish Kansal

The purpose of this article is to develop and analyze a new derivative-free class of higher-order iterative methods for locating multiple roots numerically.

Novel computational mathematical algorithms for structural optimization using graph-theoretical methods

Farzad Shafiei Dizaji, Mehrdad Shafiei Dizaji

The purpose is to reduce round-off errors in numerical simulations. In the numerical simulation, different kinds of errors may be created during analysis. Round-off error is one…

Multi-objective optimization of cycle time and energy consumption in parallel robotic assembly lines using a discrete firefly algorithm

Halenur Soysal-Kurt, Selçuk Kürşat İşleyen

Assembly lines are one of the places where energy consumption is intensive in manufacturing enterprises. The use of robots in assembly lines not only increases productivity but…