An extension of assumed stress finite elements to a general hyperelastic framework

Advanced Modeling and Simulation in Engineering Sciences

Table 5 Eigenvalue spectrum for incompressible square element

	AS-18 / EAS-21	AS-24/EAS-15	*AS-30/EAS-9**	H1/AS-39	H1P0
1	\(\infty \)	\(\infty \)	\(\infty \)	\(\infty \)	\(\infty \)
2	0.33	0.33	0.38	\(\infty \)	0.33
3	0.33	0.33	0.38	\(\infty \)	0.33
4	0.33	0.33	0.38	\(\infty \)	0.33
5	0.33	0.33	0.33	\(\infty \)	0.33
6	0.33	0.33	0.33	\(\infty \)	0.33
7	0.33	0.33	0.33	\(\infty \)	0.22
8	0.33	0.33	0.33	0.33	0.167
9	0.33	0.33	0.33	0.33	0.167
10	0.22	0.22	0.22	0.33	0.167
11	0.11	0.11	0.167	0.33	0.09
12	0.11	0.11	0.167	0.33	0.09
13	0.11	0.11	0.167	0.22	0.09
14	0.056	0.093	0.093	0.16	0.06
15	0.056	0.093	0.093	0.16	0.06
16	0.056	0.093	0.093	0.16	0.06
17	0.056	0.056	0.056	0.056	0.056
18	0.056	0.056	0.056	0.056	0.056