Open Access
Table 1
Design variables and corresponding geometric features.
| Design variables | Geometric features | Relationship and design space |
|---|---|---|
| x1 | Bottom and top thickness t1 | t1 = 0.5 + 0.1 × x1(mm), t1 ∈ [0.5, 10] |
| x2 | Top ring rib thickness t2 | t2 = 0.5 + 0.1 × x2(mm), t2 ∈ [0.5, 5] |
| x3 | Left ring rib thickness t3 | t3 = 0.5 + 0.1 × x3(mm), t3 ∈ [0.5, 5] |
| x4 | Right ring rib thickness t4 | t4 = 0.5 + 0.1 × x4(mm), t4 ∈ [0.5, 5] |
| x5 | Outer panel skin thickness t5 | t5 = 0.5 + 0.1 × x5(mm), t5 ∈ [0.5, 5] |
| x6 | Radial rib thickness t6 | t6 = 0.5 + 0.1 × x6(mm), t6 ∈ [0.5, 5] |
| x7 | Number of radial ribs nrb | nrb = x7, nrb ∈ [2, 10] |
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