Design a box section to be used as a cantilever beam

Reference no: EM131358638

Redesign the box-beam of Example 1 and 2 to make better use of the material; i.e., changing the geometry of the cross-section in such a way that the serviceability (deflection) requirement is met without over dimensioning for strength as much as it is done in Example 2. Perform the new design for a reliability of 99.5% assuming the load and strength variability are represented by C_σ= 0.2, C_F = 0.3.

Example 1

Design a box section to be used as a cantilever beam of length L = 2 m subject to a tip load P = 1000 N. Limit the tip deflection δ to 1/300 of the span L of the beam.

Example 2

Verify that the box-beam (Figure below) designed in Example 1 is sufficiently strong, for a reliability of 99.5%, assuming the load and strength variability are represented by C_σ = 0.2, C_F = 0.3.

2143_Fig 6.jpg

Reference no: EM131358638

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