Users:General FEM Analysis/Elements Reference/Membrane NURBS
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=== Example of a Complete Input Block === | === Example of a Complete Input Block === | ||
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<pre> | <pre> | ||
EL-PROP 1 : MEMRANE_NURBS | EL-PROP 1 : MEMRANE_NURBS | ||
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PRE_STRESS_G2 = 2 | PRE_STRESS_G2 = 2 | ||
</pre> | </pre> | ||
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+ | <pre> | ||
+ | EL-PROP 1 : MEMBRANE_NURBS | ||
+ | MAT= EL-MAT 1 | ||
+ | THICKNESS= 1.0 | ||
+ | INT_TYPE_MEMBRANE_NURBS = FULL !or USER | ||
+ | PROJECTED_PRESTRESS=1 SIG11=400.0 SIG22=400.0 SIG12=0.0 | ||
+ | A_X=1.0 A_Y=0.0 A_Z=0.0 !AREA FOR THE DEFINITION OF THE PRESTRESS | ||
+ | B_X=0.0 B_Y=1.0 B_Z=0.0 !VECTOR A AND VECTOR B DEFINE THE AREA | ||
+ | <pre> | ||
+ | |||
+ | The possibility for oriented anisotropic prestress fields is foreseen, yet no distortion control as for the classical FEM Membrane1-element is implemented. | ||
+ | |||
+ | |||
+ | |||
+ | |||
+ | == Tests and Benchmarks == | ||
+ | The element Membrane_NURBS has successfully been applied in 3D in various geometrically non-linear static applications, as well as in form-finding. | ||
+ | |||
+ | === Benchmark examples === | ||
+ | * form-finding of a four-point sail with with B-Rep edge cables and elastic columns as supports: ..\examples\benchmark_examples\isogeometric\iga_formfinding_4point_with_trusses\cbm_4PointSailwTrusses.txt | ||
+ | * static geometrically non-linear analysis of a prestressed single-patch membrane with fixed boundaries: ..\examples\benchmark_examples\isogeometric\iga_membrane_nln_1\cbm_iga_membrane_nln_1.txt |
Revision as of 08:41, 13 January 2017
Coded and tested!
Example of a Complete Input Block
EL-PROP 1 : MEMBRANE_NURBS MAT= EL-MAT 1 THICKNESS= 1.0 INT_TYPE_MEMBRANE_NURBS = FULL !or USER PROJECTED_PRESTRESS=1 SIG11=400.0 SIG22=400.0 SIG12=0.0 A_X=1.0 A_Y=0.0 A_Z=0.0 !AREA FOR THE DEFINITION OF THE PRESTRESS B_X=0.0 B_Y=1.0 B_Z=0.0 !VECTOR A AND VECTOR B DEFINE THE AREA <pre> The possibility for oriented anisotropic prestress fields is foreseen, yet no distortion control as for the classical FEM Membrane1-element is implemented. == Tests and Benchmarks == The element Membrane_NURBS has successfully been applied in 3D in various geometrically non-linear static applications, as well as in form-finding. === Benchmark examples === * form-finding of a four-point sail with with B-Rep edge cables and elastic columns as supports: ..\examples\benchmark_examples\isogeometric\iga_formfinding_4point_with_trusses\cbm_4PointSailwTrusses.txt * static geometrically non-linear analysis of a prestressed single-patch membrane with fixed boundaries: ..\examples\benchmark_examples\isogeometric\iga_membrane_nln_1\cbm_iga_membrane_nln_1.txt
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