基于ADINA的单层球面网壳自振特性研究

his article main analysis dragline pre-stressed belt rib monolayerspherical surface network shell natural characteristic, takes theresearch key by the most commonly used K6 net shell mechanicalanalysis. When carries on the analysis computation, has consideredthree kind of arrows cross ratios, one kind of cloth rope plan and onecloth rib way to the structure power performance influence. First, hascarried on the free vibration analysis using finite element softwareADINA to the partial double-decked net shell structure, discovered dragline pre-stressed partial belt rib monolayer spherical surfacenetwork shell base frequency crowded, level inspiring are more, afterthis is because the net shell structure arch , its vertical rigidityincreases the reason which but the horizontal rigidity weakens.