Jiao Jia

Beihang University | BUAA · Department of Automotive Engineering

To achieve the lightweight design of the offshore wind turbine（OWT）supporting structures，a topology optimization method for the OWT tripod structure is proposed. Firstly，the optimization problem with the minimum compliance subject to volume fraction is established. The concept design of the tripod structure is performed based on variable density me...

This paper proposes a topology optimization methodology for offshore wind turbine (OWT) jacket structure design in the concept phase. First of all, modal analysis and load calculation of a 5 MW reference OWT are performed. On the basis of finite element analysis, the displacement and von Mises stress of multi-jacket support structures in various ul...

Mechanical behavior of thin-walled spherical shells is of great importance for their application. In this study, the quasi-static and dynamic behaviors of water-filled spherical shells compressed onto a solid wall are explored experimentally and numerically. In particular, the simultaneous measurement of impact force and in-situ observation of defo...

The challenges facing electric vehicles with respect to driving range and safety make the design of a lightweight and safe battery pack a critical issue. This study proposes a multifunctional structural battery system comprising cylindrical battery cells and a surrounding lightweight lattice metamaterial. The lattice density distribution was optimi...

Periodic cellular structures are widely used in structural protection due to their lightweight and excellent energy absorption characteristics, but the corresponding crashworthy design is still limited. Based on the framework of hybrid cellular automata (HCA), the optimal design of periodic cellular structure for crashworthiness is carried out. To...

Based on hybrid cellular automata (HCA), we present a two-scale optimization model for heterogeneous structures with non-uniform porous cells at the microscopic scale. The method uses the K-means clustering algorithm to achieve locally nonperiodicity through easily obtained elemental strain energy. This energy is used again for a two-scale topologi...

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 technique, this paper aims to optimize the structure consisting two isotropic porous materials with positive Poisson’s...

Negative Poisson’s ratio (NPR) material attracts a lot of attentions for its unique mechanical properties. However, achieving NPR is at the expense of reducing Young’s modulus. It has been observed that the composite stiffness can be enhanced when blending positive Poisson’s ratio (PPR) material into NPR material. Based on the respective interpolat...