有限要素による膜材のリンクリング現象評価

概要

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Some of the advantages of membrane structures are lightweight and collaspsible and therefor easy to transport and erect. Furthermore, membrane structures have low installation cost, and are potentially relocatable. However, it is important to consider the potential occurence of negative stresses in membranes. Because of their negligble bending resistance, membranes have negligible buckling one. In this research, a special tension field theory is used to predict extents of wrinkled regions and magnitudes of tension stresses for static problems. Numerical evaluation is carried out using two dimensional finite elements. To investigate the efficiency of this numerical technique, a few simple experiments are performed, where a concentrated force is loaded at the center of the square membrane model which is uni-axialy prestressed and then, wrinkled waves are clearly observed.
長野工業高等専門学校の論文