...Zhaohui Xia; Shinan Zhang; Jianli Liu; Tao Nie; Zhou Huang; Guizhong Xie Purpose This paper aims to overcome the dataset dependency limitations in conventional machine learning isogeometric topology optimization (ITO) by developing a convolutional neural network (CNN)-integrated framework...

... engineers with an efficient framework for carbody structural optimization. The study first established a finite element model of the metro carbody and conducted experimental validation. On this basis, a two-stage optimization approach was implemented. In the first stage, topology optimization was performed...

...-mechanical and other multiphysics problems. Design/methodology/approach This paper introduces an isogeometric thermo-mechanical topology optimization method to extend the applicability of IGA. A mathematical model for topology optimization under thermo-mechanical loads is formulated, along with a density...

...Shashi Kant Ratnakar; Utpal Kiran; Deepak Sharma Purpose Structural topology optimization is computationally expensive due to the involvement of high-resolution mesh and repetitive use of finite element analysis (FEA) for computing the structural response. Since FEA consumes most...

...Kang Liu; Yingchun Bai; Shouwen Yao; Shenggang Luan Purpose The purpose of this paper is to develop a topology optimization algorithm considering natural frequencies. Design/methodology/approach To incorporate natural frequency as design criteria of shell-infill structures, two types of design...

... innovative lightweight automotive structures with increased performance. Research limitations/implications Computational cost of the topology optimization analysis is constrained by the nodal density discretizing the problem domain. Topology optimization solutions are usually complex, whereby they must...

...Augusto Romero Purpose The purpose of this study is to explore the optimum design of bending plate compliant mechanisms subjected to pure mechanical excitations using topological-derivative-based topology optimization. The main objective is to design the reinforcement in a plate of base material...

.... Extensions are discussed in relation with the literature on the field. Findings Closed expressions of topological derivatives are obtained and commented. Originality/value Several cases are covered in a unified and didactic presentation. Some elements of proof are novel. Topology optimization...

... Limited 2021 Emerald Publishing Limited Licensed re-use rights only Synthesis of materials Topology optimization Material design Inverse homogenization Architectured materials Relaxed formulation SIMP-ALL The aim of this work is to solve the inverse homogenization problem...

... present a new topology optimization method to solve the inverse axisymmetric electromagnetic levitation problem. Design/methodology/approach The proposed method is based on an exact second-order topological expansion of a Kohn–Vogelius-like functional specially devised for this problem. Findings...

...Mohamed Abdelhamid; Aleksander Czekanski Purpose This is an attempt to better bridge the gap between the mathematical and the engineering/physical aspects of the topic. The authors trace the different sources of non-convexification in the context of topology optimization problems starting from...

... and locations of the bolts which strongly influence the final optimized design of the structure. Originality/value This paper is the first one to study the topology optimization of bolted systems without a fixed prescribed number of bolts. Association Nationale de la Recherche et de la Technologie...

... as a topology optimization problem and then to use the concept of topological derivatives to seek a higher-order asymptotic expansion for the topologically perturbed cost functional. Such expansion is truncated and then minimized with respect to the parameters under consideration, which leads to noniterative...

... in which weight or other types of body forces are the main portions of the applied loads. The optimal topology of these structures is investigated in this study. Design/methodology/approach Topology optimization plays an increasingly important role in structural design. In this study, the topological...

...Jéderson da Silva; Jucélio Tomás Pereira; Diego Amadeu F. Torres Purpose The purpose of this paper is to propose a new scheme for obtaining acceptable solutions for problems of continuum topology optimization of structures, regarding the distribution and limitation of discretization errors...

...Jiao Jia; Jianxing Hu; Yongbin Wang; Shiqing Wu; Kai Long Purpose Negative Poisson’s ratio (NPR) material has huge potential applications in various industrial fields. However, lower Young’s modulus due to the porous form limits its further applications. Based on the topology optimization...

...Jie Liu; Guilin Wen; Qixiang Qing; Fangyi Li; Yi Min Xie Purpose This paper aims to tackle the challenge topic of continuum structural layout in the presence of random loads and to develop an efficient robust method. Design/methodology/approach An innovative robust topology optimization...

...Xueye Chen; Tiechuan Li Purpose This paper aims presents topology optimization of microfluidic channels with reverse flow. Design/methodology/approach A circular chamber with an inlet and an outlet are chosen as an initial design domain. The energy dissipation is chosen as an objective...

... does not maintain the load-carrying internal structure and the structure still breaks down even though the boundary condition is maintained. © Emerald Group Publishing Limited 2015 Finite element method Topology optimization Evolutionary structural optimization Load path Virtual...

... (Equation 5) In recent years, extensive use has been made of computers in structural analysis to accelerate the development of structural optimization. Topology optimization as an active branch of structural optimization is still an open area of research and development. Generally, topology...