N.A.C.A. Technical Memorandum Ho. 784 Pigs. 7,8,9,10,19,20,21 Normal plane Shear ' center Figure 8.- Definition of Cgip Figure 7.- Variation of the unit displacement. centerTT<S-«-f 01™ "^fPcp- center vv Figure 9.- Dimensions of examined sections. … Figure 10.- Loading machine. of open sections.
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