ABAQUS Advanced use

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ABAQUS Advanced use

• Element and Node Sets
• Shear Locking in solid elements
• Reduced Integration and Zero Energy Modes
• Sign Convention
• Integration Schemes
• Shell Elements pitfalls to avoid
• Beam Elements
• General Suggestions

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ABAQUS CAE - Modules

• PART Create part using
  Sketcher
• SKETCH sketcher
• ASSEMBLY Creation of instances and
  assembly.
• PROPERTY Define Material, SECTION
  Properties and
• ASSIGNS it.
  
  
• STEP Analysis Steps
• INTERACTION Interaction Properties,
  Constraints.
• Contact between
  2 surfaces,
• LOAD Loads, Boundary Conditions
  and Fields.
• MESH Choice of element
• JOB Creates Job, associates
  job with a MODEL
• VISUALIZATION Post processing

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Sign Convention

• Displacements and point loads are positive in the
  direction of the positive axes.
• Normal Stresses Tensile stress is ve.
• Shear stress anticlockwise about element centre
  is ve.
• Direct strains Tensile stress is ve
• Soils consolidation s s u

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Stress Discontinuities

• Stresses are calculated accurately at Gauss
  (Integration) points.
• Displacements are continuous across element
  boundaries.
• Stresses jump across element boundaries.

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Shell Element - Normal

• The direction of the ve normal is defined by the
  nodal sequence and the Right hand rule.
• The section points are numbered in the direction
  of the ve normal. The section points identify
  the sections.

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