Mathematical Problems in Engineering / 2015 / Article / Tab 4

Research Article

Improved Genetic Algorithm with Two-Level Approximation Method for Laminate Stacking Sequence Optimization by Considering Engineering Requirements

Table 4

Practical optima of composite panels.

Ex: exterior part 
In: interior part
PliesWeight, kg (B/A)Critical buckling factor (B/A)

Case 0/45/−45/0/−45/45/0/45/−45/0/−452s (Ex)—240.8258/0.82580.76/0/76

Case 0/45/0/45/−45/0/−45/0/−45/0/−45/45s (Ex)—240.8343/0.82580.73/0.72

Case 02/45/−45/0/45/−45/02/45/−45/0s (Ex)—240.8258/0.82580.74/0.74

Case 0/45/−45/0/45/−45/02/45/−45/0/45s (Ex)—240.8774/0.87740.77/0.77

Case 0/−45/0/45/−45/0/45/−45/0/−45/0/−45s(Ex)—240.8774/0.87740.78/0.78

Reference [26](−45/45)2/45/0/−45/05s (Ex)—240.8258

A: after rounding, B: before rounding; #: critical buckling factor in reference, and ##: value given by Nastran.

We are committed to sharing findings related to COVID-19 as quickly and safely as possible. Any author submitting a COVID-19 paper should notify us at to ensure their research is fast-tracked and made available on a preprint server as soon as possible. We will be providing unlimited waivers of publication charges for accepted articles related to COVID-19. Sign up here as a reviewer to help fast-track new submissions.