PENGoLINS swMATH ID: 41767 Software Authors: Zhao, Han; Liu, Xiangbei; Fletcher, Andrew H.; Xiang, Ru; Hwang, John T.; Kamensky, David Description: PENGoLINS (PENalty-based GLuing of Isogeometric Non-matching Shells) is an open-source Python library for penalty of non-matching Kirchhoff–Love shells using a FEniCS-based implementation of isogeometric analysis (IGA) called tIGAr. Users can directly perform shell structure analysis on CAD models, in STEP or IGES format, consisting of multiple B-spline/NURBS patches with non-matching parametrizations at their intersections. The pythonOCC, a Python interface of OpenCASCADE, is leveraged for computation of surface-surface intersections, where displacement and rotational continuities are maintained using penalty method. Furthermore, this library can be extended to fluid-structure interaction (FSI) and nonlocal contact analysis by integrating with existing open-source Python frameworks, viz., VarMINT, ShNAPr and CouDALFISh. Coupling between separately-parametrized patches uses a modification of the penalty formulation proposed by Herrema et al., which is verified using several benchmark problems. Applications to aerospace structures and prosthetic heart values are demonstrated in this documentation. Homepage: https://hanzhao2020.github.io/PENGoLINS/ Source Code: https://github.com/hanzhao2020/PENGoLINS Dependencies: Python Keywords: isogeometric analysis; FEniCS; Kirchhoff-Love shells; non-matching interfaces; aerospace structures Related Software: GeoMACH; PETSc; ShNAPr; CouDALFISh; tIGAr; PythonOCC; Vehicle sketch pad; Python; UFL; FEniCS; DOLFIN Cited in: 1 Publication Standard Articles 1 Publication describing the Software, including 1 Publication in zbMATH Year An open-source framework for coupling non-matching isogeometric shells with application to aerospace structures. Zbl 07504618Zhao, Han; Liu, Xiangbei; Fletcher, Andrew H.; Xiang, Ru; Hwang, John T.; Kamensky, David 2022 all top 5 Cited by 6 Authors 1 Fletcher, Andrew H. 1 Hwang, John T. 1 Kamensky, David 1 Liu, Xiangbei 1 Xiang, Ru 1 Zhao, Han Cited in 1 Serial 1 Computers & Mathematics with Applications Cited in 2 Fields 1 Numerical analysis (65-XX) 1 Mechanics of deformable solids (74-XX) Citations by Year