In this paper we provide some more details on the numerical analysis and we present some enlightening numerical results related to the spectrum of a finite element least-squares approximation of the linear elasticity formulation introduced recently. We show that, although the formulation is robust in the incompressible limit for the source problem, its spectrum is strongly dependent on the Lam\'e parameters and on the underlying mesh.

翻译：在本文中,我们提供了关于数字分析的更多细节,并提出了一些与最近引入的线性弹性配方的有限元素最小方平方近似值有关的具有启发性的数字结果,我们表明,虽然该配方在源问题的不可压缩限度内是稳健的,但其频谱在很大程度上取决于Lam\'e参数和基本网格。