Maximal Stiffness Design of Two-Material Structures by Topology Optimization with Nonprobabilistic Reliability

AIAA Journal ◽  
2012 ◽  
Vol 50 (9) ◽  
pp. 1993-2003 ◽  
Author(s):  
Yangjun Luo ◽  
Zhan Kang ◽  
Zhufeng Yue
Keyword(s):  
Topology Optimization ◽  
Stiffness Design

Lightweight Design of the Welded Beam of Machining Center Based on Topology Optimization

2016 ◽  
Vol 836-837 ◽  
pp. 326-332
Author(s):  
Qin Sun ◽  
Zuo Li Li ◽  
Hui Yu ◽  
Yang Liu ◽  
Jin Sheng Zhang
Keyword(s):  
Topology Optimization ◽  
Natural Frequencies ◽  
Lightweight Design ◽  
Element Model ◽  
Machining Process ◽  
Mode Shapes ◽  
Cutting Condition ◽  
Machining Center ◽  
Maximum Stiffness ◽  
Stiffness Design

From the perspective of statics, the deformation of welded beam under the action of gravity and cutting force was studied in the paper. During the actual machining process, vibration of welded beam and even the machine can be caused due to the change of cutting condition and interference from the outside. To avoid the natural frequency, and prevent the occurrence of resonance phenomena, welded beam modal was further analyzed; the first six natural frequencies and mode shapes of the beam were achieved. Statics and modal analysis are the basis of lightweight design of the welded beam based on topology optimization. The topology optimization model of maximum stiffness design and eigenvalue problem structural dynamics was established. Finite element model of beam and its components was established in hypermesh, and the optimization objective function, constraint function and boundary conditions were also set. Compared with the structure before optimization, the weight of the beam was reduced 10%, the lightweight design of the welded beam was achieved and the comprehensive performance of the beam was significantly improved.

Topology Optimization of Beam Structures with Various End and Loading Conditions

2013 ◽  
Vol 465-466 ◽  
pp. 22-26
Author(s):  
Dereje Engida Woldemichael ◽  
Jia Jiun Lai ◽  
D. Sujan
Keyword(s):  
Topology Optimization ◽  
Single Point ◽  
High Strength ◽  
Point Load ◽  
Ease Of Use ◽  
Loading Conditions ◽  
Beam Structures ◽  
Stiffness Design ◽  
End Conditions ◽  
Optimum Material

Topology optimization deals with optimum material (mass) distribution within a design domain to find optimal lay-out of a structure subjected to certain boundary and loading conditions. Topology optimization can be used to address conflicting requirements, such as light weight and high-strength/stiffness design. In this paper, a simulation program to analyze topology optimization of beam structures with seven different end conditions and three types of loads (single point load, two point loads and uniformly distributed load) is developed using MATLAB code adapted from Sigmunds 99 line topology optimization code. Furthermore, the program has been enhanced with a graphical user interface for ease of use. Using the developed system, it is possible to analyze the effect of different parameters.

Stiffness design of plate/shell structures by evolutionary topology optimization

2019 ◽  
Vol 141 ◽  
pp. 232-250 ◽  
Author(s):  
Baotong Li ◽  
Honglei Liu ◽  
Zihui Yang ◽  
Jinhua Zhang
Keyword(s):  
Topology Optimization ◽  
Shell Structures ◽  
Stiffness Design

Spot Weld/Adhesive Pattern Optimization

1996 ◽  
Author(s):  
R. J. Yang ◽  
Y. Rui ◽  
A. Mohammed ◽  
G. Singh
Keyword(s):  
Topology Optimization ◽  
Design Methodology ◽  
Optimization Problem ◽  
Optimization Method ◽  
Spot Weld ◽  
Linear Programming Method ◽  
Topology Optimization Problem ◽  
Maximum Stiffness ◽  
Stiffness Design ◽  
Topology Optimization Method

Abstract This research presents a new application of topology optimization. Patterns for spot weld location and adhesive distribution when joining body panels are determined by using the topology optimization method. The density method which parameterizes the density of each finite element is employed and a sequential linear programming method is used for solving the topology optimization problem. In this study, a B-Pillar to Rail Joint exemplifies the design methodology. The results show that patterns for optimal spot weld location and adhesive distribution can be obtained for a maximum stiffness design with mass constraints.

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