JCP paper on linear elasticity (2021)

📄 Y. Zhang, SEC-J-Fisser, SEC-M-Gerritsma, A hybrid mimetic spectral element method for three-dimensional linear elasticity problems, Journal of Computational Physics 433 (2021) 110179.

You can download this paper (🌱 open access) at doi.org/10.1016/j.jcp.2021.110179.

This paper should be cited as shown at cite as.

Corrections

Because of my carelessness, there are some typos/errors in this paper and below I make corrections to those. Please excuse me for the inconveniences.

❌ typo-1

📍: on page 14, in Section 5.2 Manufactured solution

The mapping

\mathring{\Phi} : \mathring{\Omega} \to \Omega

is given as

\begin{Bmatrix} x\\y\\z \end{Bmatrix} = \mathring{\Phi}(r,s,t) = \begin{Bmatrix} \Phi^x(r,s,t)\\ \Phi^y(r,s,t)\\ \Phi^z(r,s,t) \end{Bmatrix}= \begin{Bmatrix} r + c \sin(\pi r)\sin(\pi s)\sin(\pi t)\\ s + c \sin(\pi r)\sin(\pi s)\sin(\pi t)\\ t + c \sin(\pi r)\sin(\pi s)\sin(\pi t) \end{Bmatrix},

which is not correct.

The correct mapping should be

\begin{Bmatrix} x\\y\\z \end{Bmatrix} = \mathring{\Phi}(r,s,t) = \begin{Bmatrix} \Phi^x(r,s,t)\\ \Phi^y(r,s,t)\\ \Phi^z(r,s,t) \end{Bmatrix}= \begin{Bmatrix} r + \frac{1}{2}c \sin(2\pi r)\sin(2\pi s)\sin(2\pi t)\\ s + \frac{1}{2}c \sin(2\pi r)\sin(2\pi s)\sin(2\pi t)\\ t + \frac{1}{2}c \sin(2\pi r)\sin(2\pi s)\sin(2\pi t) \end{Bmatrix}.

For a complete Python implementation of this mesh, see crazy_mesh.py.

❌ typo-2

📍: on page 17, in Section 5.2.1 Cracked arch bridge

This subsection better be a Section; 5.3 Cracked arch bridge.


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