scholarly journals Structural design of aircraft skin stretch-forming die using topology optimization

2013 ◽  
Vol 246 ◽  
pp. 278-288 ◽  
Author(s):  
Ji-Hong Zhu ◽  
Xiao-Jun Gu ◽  
Wei-Hong Zhang ◽  
Pierre Beckers
Keyword(s):  
Topology Optimization ◽  
Structural Design ◽  
Stretch Forming ◽  
Aircraft Skin ◽  
Skin Stretch ◽  
Skin Stretch Forming

Aircraft Skin Stretch-Forming Die Light-Weight Design Using Topology Optimization

2011 ◽  
Vol 697-698 ◽  
pp. 600-603 ◽  
Author(s):  
Ji Hong Zhu ◽  
H. Wang ◽  
W.H. Zhang ◽  
X.J. Gu
Keyword(s):  
Numerical Simulation ◽  
Topology Optimization ◽  
Topology Design ◽  
Surface Load ◽  
Light Weight ◽  
Stretch Forming ◽  
Weight Design ◽  
Aircraft Skin ◽  
Skin Stretch ◽  
Skin Stretch Forming

The purpose of this paper is to use the topology optimization method to solve the light-weight design problem of large aircraft skin stretch-forming die. The platform of ABAQUS is firstly used for numerical simulation of skin stretch-forming. And the surface load conditions are therefore obtained. The topology optimization is carried out accordingly to maximize the structural stiffness with the material properties and the boundary conditions properly defined. Referring to the obtained topology design, the optimal structure is reconstructed and then evaluated by the non-linear numerical simulation of stretch-forming. Compared with the traditional design, the numerical results have shown that the topology design can improve the stiffness and strength of the stretch-forming die significantly.

Topology Optimization Considering Gravitational and Centrifugal Forces

2006 ◽  
Author(s):  
Bin Zheng ◽  
Hae Chang Gea
Keyword(s):  
Topology Optimization ◽  
Kinetic Energy ◽  
Structural Design ◽  
Gravitational Force ◽  
Body Force ◽  
Optimization Problems ◽  
Sensitivity Analyses ◽  
Centrifugal Forces ◽  
Gravitational Forces ◽  
Mean Compliance

In this paper, topology optimization problems with two types of body force are considered: gravitational force and centrifugal force. For structural design under both external and gravitational forces, a total mean compliance formulation is used to produce the stiffest structure. For rotational structural design with high angular velocity, one additional design criteria, kinetic energy, is included in the formulation. Sensitivity analyses of the total mean compliance and kinetic energy are derived. Finally, design examples are presented and compared to show the effects of body forces on the optimized results.

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