Strand7 analysis of structures

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Strand7 analysis of structures

• Example 1 Welded frame/truss
• Example 2 Simple frame analysis
• Example 3 Beam using 2D element
• Example 4 2D plane stress concentration
• Example 5 2D plane strain problem

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Example 1
Load case 1 one vertical load of 10 kN Load
case 2 Single 30 kN horizontal force Load case
3 linear combination of load case 1 and 2.
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Procedures

• Define the geometry and element types
• Define the support conditions
• Define the loading conditions
• Define material properties and element sections
• Solve the model
• Post process the model, to view the interpret the
  results

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Principal planes of a beam
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Example 2
Same as example 3 for Microstran analysis
UDL 25kN/m
250UB37.3
2.4 m
4.0 m
250UC89.5
10 m

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Example 3 2D model
10 kN
Compare the results of Dy , ?xx and ?xy
1 m
8 m
Use both beam element and 2D plane stress element
E 24.6GPa, ? 0.2, ? 2640 kg/m3 , t 0.1m
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Example 4 2D plane stress

Steel strip in tension Symmetry conditions??
Calculation of stress concentration factor
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Example 4 Cont.
Subdivide 2x3
Subdivide 2x4
Subdivide 3x4
Subdivide 3x3
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Example 5 Concrete Dam
E 24.6GPa, ? 0.2, ? 2640 kg/m3
Divide the dam into three sections, each with 8 x
8 subdivision.