Closed loop geometry based optimization by integrating subdivision, reanalysis and metaheuristic searching techniques

Huang, Guanxin; Wang, Hu; Wang, Guoping; Li, Guangyao

doi:10.1016/j.compstruc.2017.01.005

Cited by 10 publications

(2 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Besides, the analysis model obtained by discretization in FEA, for instance, is only an approximation of the CAD geometry. Some research efforts have been conducted to bridge the gap between CAD and CAE to a limited extent, such as abstracting process from a CAD model to a CAE suitable model (Reddy and Turkiyyah, 1995;Rezayat, 1996;Belaziz et al, 2000;Suresh, 2003) or improving the entire traditional process (Lee, 2005;Hamri et al, 2010;Xia et al, 2015;Hsu et al, 2015;Pan et al, 2016;Wang et al, 2016;Huang et al, 2017). For the second issue: one first obtains the corresponding numerical solution once the geometry or material is Step 1:…”

Section: Independentmentioning

confidence: 99%

Isogeometric independent coefficients method for fast reanalysis of structural modifications

Ding

2019

View full text Add to dashboard Cite

Purpose This paper aims to provide designers/engineers, in engineering structural design and analysis, approaches to freely and accurately modify structures (geometric and/or material), and then quickly provide real-time capability to obtain the numerical solutions of the modified structures (designs). Design/methodology/approach The authors propose an isogeometric independent coefficients (IGA-IC) method for a fast reanalysis of structures with geometric and material modifications. Firstly, the authors seamlessly integrate computer-aided design (CAD) and computer-aided engineering (CAE) by capitalizing upon isogeometric analysis (IGA). Hence, the authors can easily modify the structural geometry only by changing the control point positions without tedious transformations between CAE and CAD models; and modify material characters simply based on knots vectors. Besides, more accurate solutions can be obtained because of the high order degree of the spline functions that are used as interpolation functions. Secondly, the authors advance the proposed independent coefficients method within IGA for fast numerical simulation of the modified designs, thereby significantly reducing the enormous time spent in repeatedly numerical evaluations. Findings This proposed scheme is efficient and accurate for modifying the structural geometry by simply changing the control point positions, and material characters by knots vectors. The enormous time spent in repeated full numerical simulations for reanalysis is significantly reduced. Hence, enabling quickly modifying structural geometry and material, and analyzing the modified model for practicality in design stages. Originality/value The authors herein advance and propose the IGA-IC scheme. Where, it provides designers to fasten and simple designs and modify structures (both geometric and material). It then can quickly in real-time obtain numerical solutions of the modified structures. It is a powerful tool in practical engineering design and analysis process for local modification. While this method is an approximation method designed for local modifications, it generally cannot provide an exact numerical solution and its effectiveness for large modification deserves further study.

show abstract

Section: Independentmentioning

confidence: 99%

Isogeometric independent coefficients method for fast reanalysis of structural modifications

Ding

2019

View full text Add to dashboard Cite

show abstract

“…Recently, Wang et al developed a rapid CAD/CAE integrated design‐analysis system called “seen is solution” for complex design problems. Subsequently, Huang et al constructed a closed‐loop optimization framework based on reanalysis and subdivision. However, the subdivision technique appears to have difficulty handling complicated geometric models, especially surface models.…”

Section: Introductionmentioning

confidence: 99%

An efficient auxiliary projection‐based multigrid isogeometric reanalysis method and its application in an optimization framework

Liu

et al. 2020

Numerical Meth Engineering

Self Cite

View full text Add to dashboard Cite

Summary An efficient optimization framework is developed in this study by integrating auxiliary projection‐based multigrid isogeometric reanalysis (MG‐IGR) and metaheuristic searching techniques. It is well known that the inherent characteristics of isogeometric analysis (IGA) are superior in shape optimization problems. Inheriting the characteristics of IGA, an auxiliary projection‐based MG reanalysis (MGR) is proposed to construct mapping between the mesh before modification and after modification during the optimization process. Subsequently, MG‐IGR is utilized to reanalyze the modified design efficiently by reusing the initial evaluated results. Moreover, the proposed MG‐IGR also eliminates the restriction of mesh consistency. In this framework, the structure can be designed directly through parameterized control of the non‐uniform rational B‐spline (NURBS) model, and the MG‐IGR fast solver enables any metaheuristic algorithm to perform the optimization procedure. Moreover, the accuracy of the simulation can be guaranteed by the NURBS model and the convergence criterion of the MG. Finally, two geometric optimization examples are presented to validate the performance of the developed framework.

show abstract

“Traveling-wave tube mechanics simulator suite” a CAD/CAE integrated rapid redesign system of vibration analysis for traveling-wave tubes

Yin

Xie

et al. 2019

Advances in Engineering Software

View full text Add to dashboard Cite

Closed loop geometry based optimization by integrating subdivision, reanalysis and metaheuristic searching techniques

Cited by 10 publications

References 55 publications

Isogeometric independent coefficients method for fast reanalysis of structural modifications

Isogeometric independent coefficients method for fast reanalysis of structural modifications

An efficient auxiliary projection‐based multigrid isogeometric reanalysis method and its application in an optimization framework

“Traveling-wave tube mechanics simulator suite” a CAD/CAE integrated rapid redesign system of vibration analysis for traveling-wave tubes

Contact Info

Product

Resources

About