Configuration Optimization of Clamping Members of Frame-Supported Membrane Structures

Ohsaki M.

Nakajima T.

Fujiwara J.

Takeda F.

Engineering Structures

A method is presented for configuration optimization of frames that have specified properties on nodal displacements, stresses, and reaction forces against static loads. The conventional ground structure approach is first used for topology optimization. A feasible solution with small number of members satisfying all the design requirements except the stress constraints is obtained by assigning artificially small upper-bound displacement, or by penalizing the stiffness of a thin member. This way, the well-known difficulty in topology optimization under stress constraints is successfully avoided. The nodal locations and cross-sectional areas of the feasible solution are next optimized to obtain an approximate optimal configuration under stress constraints. The proposed method is applied to design of self-fastening clamping members for membrane structures modeled using frame elements. An optimization result is also presented for a clamping member that adjusts deformation of membrane by applying a clamping force with a vertically attached bolt.

Membrane structure

Clamping member

Configuration optimization

Stress constraints

Construction. Civil engineering [ 510 ]

eng

Elsevier Ltd.

Copyright (c) 2011 Elsevier Ltd.

This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。

[ISSN] 0141-0296

[DOI] 10.1016/j.engstruct.2011.07.026

[DOI] https://doi.org/10.1016/j.engstruct.2011.07.026