In this test the simple plate system, depicted above, is analysed with a self-weight of p=70 kN/m² in the z-direction and a gravitational acceleration of 9.81 m/s², whereby an isotropic material with an E-modulus of 210*10³ MPa and a poisson's ratio of 0.3 are used. For case 1 the system is generated with an element mesh of 2x2 quadrilateral elements. In the subsequent cases the number of elements are doubled, up to case 6, which then has 64x64 quadrilateral elements. The calculation is made with the program ASE.

More precise description: NAFEMS: Linear Statics Benchmarks, Vol. 1

Results: Stress Sxx at the top side of the plate in point B. Benchmark value 26 MPa (8x8 elements), for an 8-node second order and a 16-node third order quad-element. Deviation of the program ASE in loadcase 1 (2x2) 34.6%, loadcase 2 (4x4) 23.4%, loadcase 3 (8x8) 14.0%, loadcase 4 (16x16) 7.9%, loadcase 5 (32x32) 4.4%, loadcase 6 (64x64) 2.5%

Further results in the DAT-file.

• ic11_e.dat