Engineering Computations: Volume 40 Issue 4

Isotropic yield surfaces for porous ductile materials: complete geometric representation by a computational homogenisation procedure

Wanderson Ferreira dos Santos, Ayrton Ribeiro Ferreira, Sergio Persival Baroncini Proença

The present paper aims to explore a computational homogenisation procedure to investigate the full geometric representation of yield surfaces for isotropic porous ductile media…

Multi-fidelity surrogate-based optimization for microfluidic concentration gradient generator design

Haizhou Yang, Seong Hyeon Hong, Yu Qian, Yi Wang

This paper aims to present a multi-fidelity surrogate-based optimization (MFSBO) method for computationally accurate and efficient design of microfluidic concentration gradient…

Dynamic response of damaged rigid-frame bridges subjected to moving loads using analytical based formulations

Baran Bozyigit

This study aims to perform dynamic response analysis of damaged rigid-frame bridges under multiple moving loads using analytical based transfer matrix method (TMM). The effects of…

Stiffness of three-bar tensegrity structure

Ani Luo, Ziying Cao, Heping Liu, Yaming Feng

In this paper, the main factors influencing the structure stiffness will be analyzed by studying the tangent stiffness matrix based on different requirement in engineering…

Random vibration-based virtual fatigue test for large-scale welded structures using frequency-domain structural stress method and its application to traction transformers

Zimou Tang, Min Yang, Jianxiong Xiao, Zheng Shen, Liming Tang, Jibin Wang

This paper aims to present an engineering computational method for fatigue life evaluation of welded structures on large-scale equipment under random vibration load.

Segmented research and parameter optimization of double-layer vibrating screen

Zhanfu Li, Jianbin Liang, Peiyu Jia, Shaoqi Zheng, Hongzhi Zhou, Xin Tong

The purpose of this paper is to study the screen surface parameters of the double deck vibrating screen, in sections, to determine the influence of each part of the screen surface…

Legendre wavelets based approach for the solution of type-2 fuzzy uncertain smoking model of fractional order

Dhabaleswar Mohapatra, Snehashish Chakraverty

Investigation of the smoking model is important as it has a direct effect on human health. This paper focuses on the numerical analysis of the fractional order giving up smoking…

General prediction model of residual pretightening force of bolt group with one-step and multi-step pretightening and analysis of influencing factors from the perspective of elastic interaction

Wujiu Pan, Xianmu Li, Lele Sun, Hongxing Song, Minghai Wang

The purpose is to predict the distribution of the residual pretightening force of the bolt group under the action of any initial pretightening force, and to achieve the final…

Investigation on the wall thickness variation of an eccentric tube in the rotary draw bending process

Zengkun Zhang, Dongru Li, Jianjun Wu, Muzamil Muhammad, Yang Li

When bending a large diameter thin-walled tube, the thickn ess of outer side wall will reduce greatly, which leads to a decrease of structural strength of the tube. To solve this…

Simulating dual solutions of coupled pore-fluid flow and chemical dissolution problems in fluid-saturated heterogeneous porous media

Chongbin Zhao, B.E. Hobbs, Alison Ord

The objective of this paper is to establish a solution strategy for obtaining dual solutions, namely trivial (conventional) and nontrivial (unconventional) solutions, of coupled…

A hybrid method to determine optimal design axial forces of servo steel struts in excavations with high deformation requirements

Honggui Di, Yuyin Jin, Shunhua Zhou, Di Wu

The application of servo steel struts enables the active control of the excavation-induced deformation in foundation pits. However, there is currently only one design axial force…

Adaptive linear quadratic regulator for optimal structural control based on wavelet transform and genetic algorithm

Haylim Chha, Yongbo Peng

In real life, excitations are highly non-stationary in frequency and amplitude, which easily induces resonant vibration to structural responses. Conventional control algorithms in…