Broadband topology optimization of three-dimensional structural-acoustic interaction with reduced order isogeometric FEM/BEM

L Chen, H Lian, HW Dong, P Yu, S Jiang… - Journal of …, 2024‏ - Elsevier
This paper presents a model order reduction method to accelerate broadband topology
optimization of structural-acoustic interaction systems by coupling Finite Element Methods …

Isogeometric boundary element methods for three dimensional static fracture and fatigue crack growth

X Peng, E Atroshchenko, P Kerfriden… - Computer Methods in …, 2017‏ - Elsevier
We present a novel numerical method to simulate crack growth in 3D, directly from the
Computer-Aided Design (CAD) geometry of the component, without any mesh generation …

Weakening the tight coupling between geometry and simulation in isogeometric analysis: From sub‐and super‐geometric analysis to Geometry‐Independent Field …

E Atroshchenko, S Tomar, G Xu… - International Journal for …, 2018‏ - Wiley Online Library
This paper presents an approach to generalize the concept of isogeometric analysis by
allowing different spaces for the parameterization of the computational domain and for the …

Shape optimization directly from CAD: An isogeometric boundary element approach using T-splines

H Lian, P Kerfriden, SPA Bordas - Computer Methods in Applied Mechanics …, 2017‏ - Elsevier
We develop a T-spline isogeometric boundary element method (IGABEM)(Simpson et al.,
2012; Scott et al., 2013; Simpson et al., 2014) to shape sensitivity analysis and gradient …

Seamless integration of computer-aided geometric modeling and acoustic simulation: Isogeometric boundary element methods based on Catmull-Clark subdivision …

LL Chen, Y Zhang, H Lian, E Atroshchenko… - … in Engineering Software, 2020‏ - Elsevier
Isogeometric boundary element method is a computer simulation algorithm that can directly
utilize the data of a geometric model represented by its surface. Catmull-Clark subdivision …

Skew-symmetric Nitsche's formulation in isogeometric analysis: Dirichlet and symmetry conditions, patch coupling and frictionless contact

Q Hu, F Chouly, P Hu, G Cheng, SPA Bordas - Computer Methods in …, 2018‏ - Elsevier
A simple skew-symmetric Nitsche's formulation is introduced into the framework of
isogeometric analysis (IGA) to deal with various problems in small strain elasticity: essential …

Level set-based isogeometric topology optimization for maximizing fundamental eigenfrequency

M Xu, S Wang, X **e - Frontiers of Mechanical Engineering, 2019‏ - Springer
Maximizing the fundamental eigenfrequency is an efficient means for vibrating structures to
avoid resonance and noises. In this study, we develop an isogeometric analysis (IGA)-based …

Taylor-series expansion based numerical methods: a primer, performance benchmarking and new approaches for problems with non-smooth solutions

T Jacquemin, S Tomar, K Agathos… - … Methods in Engineering, 2020‏ - Springer
We provide a primer to numerical methods based on Taylor series expansions such as
generalized finite difference methods and collocation methods. We provide a detailed …

A level set based topology optimization for finite unidirectional acoustic phononic structures using boundary element method

H Gao, J Liang, B Li, C Zheng, T Matsumoto - Computer Methods in …, 2021‏ - Elsevier
The paper presents a level set based topology optimization method for unidirectional
phononic structures with finite layers of lattice cells. Boundary element method (BEM) is …

[HTML][HTML] Isogeometric indirect boundary element method for solving the 3D acoustic problems

YH Wu, CY Dong, HS Yang - Journal of Computational and Applied …, 2020‏ - Elsevier
This paper provides an Isogeometric Indirect Boundary Element Method (IGIBEM) based on
NURBS (Non-Uniform Rational B-Splines) and PHT-splines (polynomial splines over …