|Table of Contents|

Structural Fatigue Life Optimization Method Based on Response Surface Model

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2011年06期
Page:
843-846
Research Field:
Publishing date:

Info

Title:
Structural Fatigue Life Optimization Method Based on Response Surface Model
Author(s):
XUE Cai-junTAN WeiXU Fen-jinDAI Jian-hua
Key Laboratory of Fundamental Science for National Defense-advanced Design Technology of Flight Vehicle, Nanjing University of Aeronautics & Astronautics,Nanjing 210016,China
Keywords:
response surface models fatigue life structural optimization dynamic simulation landing gears
PACS:
TH12; V214
DOI:
-
Abstract:
Aiming at the shortcoming of time-consuming for the structural optimization based on fatigue life,anti-fatigue design method and optimization technology are combined for presenting a structural fatigue life optimization method based on a response surface model. Considering a landing gear’s structural design,a load spectrum of substructure fatigue life analysis is obtained by dynamic simulation. The quadratic response surface models of fatigue life are established based on the design method of latin hypercube. The optimization design of fatigue life for a forestay of landing gear is employed. The fatigue life improves 5. 4 times. The optimization result demonstrates the effectiveness of the presented method.

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Last Update: 2012-10-25