Free-form optimization method for frame structures aiming at controlling time-dependent responses

2020 ◽  
Vol 63 (1) ◽  
pp. 479-497
Author(s):  
Masatoshi Shimoda ◽  
Yang Liu ◽  
Mamoru Wakasa
Keyword(s):  
Optimization Method ◽  
Time Dependent ◽  
Free Form ◽  
Frame Structures

Shape Identification for Controlling the Static Deformation of Frame Structures

2014 ◽  
Author(s):  
Koki Kameyama ◽  
Masatoshi Shimoda ◽  
Takashi Morimoto
Keyword(s):  
Optimization Method ◽  
Frame Structure ◽  
Static Deformation ◽  
Free Form ◽  
Frame Structures ◽  
Shape Identification ◽  
Shape Gradient ◽  
Deformation Control ◽  
Out Of Plane ◽  
Gradient Function

The deformation control is an important design problem in the stiffness design of structures and it also enables to give a function to the structures. This paper proposes a non-parametric, or a node-based shape optimization method based on the variational method for controlling the static deformation of spatial frame structures. As the objective functional, we introduce the sum of squared error norms to the desired displacements on specified members. Under the assumption that each member varies in the out-of-plane direction to the centroidal axis, the shape gradient function and the optimality conditions are theoretically derived. The shape gradient function is applied to a gradient method in a function space with a Laplacian smoother. With this method, an optimal free-form frame structure with smoothness can be identified for a desired static deformation. The validity and effectiveness were verified through design examples.

Free-form optimization method of frame structures for elastic buckling

2016 ◽  
Vol 82 (841) ◽  
pp. 16-00229-16-00229 ◽  
Author(s):  
Masatoshi SHIMODA ◽  
Ryo YOSHIMOTO
Keyword(s):  
Optimization Method ◽  
Free Form ◽  
Frame Structures ◽  
Elastic Buckling

Non-parametric free-form optimization method for frame structures

2014 ◽  
Vol 50 (1) ◽  
pp. 129-146 ◽  
Author(s):  
Masatoshi Shimoda ◽  
Yang Liu ◽  
Takashi Morimoto
Keyword(s):  
Optimization Method ◽  
Free Form ◽  
Frame Structures ◽  
Non Parametric

scholarly journals J122035 Free-form Optimization Method for Space Frame Structures

2012 ◽  
Vol 2012 (0) ◽  
pp. _J122035-1-_J122035-5
Author(s):  
Naoki UMEDA ◽  
Fuminori HAYASHI ◽  
Masatoshi SHIMODA
Keyword(s):  
Optimization Method ◽  
Free Form ◽  
Frame Structures ◽  
Space Frame

Non-parametric free-form optimal design of frame structures in natural frequency problem

2016 ◽  
Vol 117 ◽  
pp. 334-345 ◽  
Author(s):  
Masatoshi Shimoda ◽  
Tomohiro Nagano ◽  
Takashi Morimoto ◽  
Yang Liu ◽  
Jin-Xing Shi
Keyword(s):  
Optimal Design ◽  
Natural Frequency ◽  
Free Form ◽  
Frame Structures ◽  
Non Parametric

scholarly journals Free-Form Optimization Method for Shape Design of Framed Structure

2013 ◽  
Vol 79 (804) ◽  
pp. 2884-2898 ◽  
Author(s):  
Masatoshi SHIMODA ◽  
Fuminori HAYASHI ◽  
Naoki UMEDA ◽  
Yang LIU
Keyword(s):  
Optimization Method ◽  
Free Form ◽  
Shape Design
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