ProductsAbaqus/StandardAbaqus/Explicit Elements tested
Problem descriptionModel:The model is illustrated in the figure above. In addition, two input files are provided for the continuum shell element model to illustrate the use of the STACK DIRECTION=ORIENTATION parameter to define the element thickness (stacking) direction independent of the nodal connectivity using a spherical system. Material:Linear elastic, Young's modulus = 68.25 GPa, Poisson's ratio = 0.3. Boundary conditions:${u}_{x}={u}_{y}={u}_{z}=$ 0 at point E. Along edge AE, symmetry about the z–x plane. Along edge CE, symmetry about the y–z plane. Loading:Concentrated radial loads of 2 kN outward at A, inward at C. Reference solutionThis is a test recommended by the National Agency for Finite Element Methods and Standards (U.K.): Test LE3 from NAFEMS publication TNSB, Rev. 3, “The Standard NAFEMS Benchmarks,” October 1990. Target solution: ${u}_{x}=$ 185 mm at point A. Results and discussionThe values enclosed in parentheses are percentage differences with respect to the reference solution.
* Abaqus/Explicit finitestrain element with enhanced hourglass control. **Abaqus/Standard finitestrain element with enhanced hourglass control. *** Abaqus/Explicit continuum shell element with the default “relax stiffness” hourglass control. **** Due to the loading position, only the Mode 2 and Mode 4 elements can be used. Furthermore, due to the symmetries of the problem, only the Fourier interpolator $\mathrm{cos}2\theta $ contributes to the solution. Thus, the Mode 4 elements produce identical results. Since Mode 4 is the highestorder Fourier term provided, no further circumferential mesh refinement is possible, and only coarse mesh results can be obtained. The continuum shell element meshes using the STACK DIRECTION=ORIENTATION parameter yield identical results to the continuum shell element meshes in which the thickness direction is defined by the element nodal connectivity. Input filesAbaqus/Standard input files
Abaqus/Explicit input files
