1988-04-01

Linked Region Variable Technique in Structural Optimization 880907

Several automated redesign methods have been proposed for static linear structures. Those methods that use approximate modes incorporate different length scales into the basis vectors, including the overall geometric scale, the loading scale and possibly vibration wavelength scales. The proposed approach uses Ritz vectors derived from pseudo-loads acting on linked-design-variable regions and hence bring a “redesign scale” into the set of base vectors. The results look promising for cases of redesign where substantial changes are required in regional parameters. As might be expected, “pseudo-force modes” due to loads at a regional length scale are best able to predict response of a structure with changes on that length scale. To date only the “forward” problem has been solved, and the fully automated redesign using nonlinear mathematical programming is underway.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 43% off list price.
Login to see discount.
Special Offer: With TechSelect, you decide what SAE Technical Papers you need, when you need them, and how much you want to pay.
X