St. Petersburg Polytechnic University Journal: Physics and Mathematics Научно-технические ведомости СПбГПУ. Физико-математические науки 2304-9782, 2618-8686, 2405-7223 8 Mathematical models, the research algorythm and the ribbed shells steadiness analysis  taking into account the creeping of the material at finite bending flexures Математические модели, алгоритм исследования и анализ устойчивости ребристых  оболочек с учетом ползучести материала при конечных прогибах Zhgutov Vladimir abc.kitezh@gmail.com 10 06 2010 2 98 53 59

The mathematical deformation models and the algorithm of the ribbed shells research with joint geometrical nonlinearity and other factors accounting are proposed. It is shown, that the creeping of the material has a great impact on the decrease of the critical load estimated during the elastic behavior of the material.

 ribbed shells geometrical nonlinearity creeping steadiness decrease of the critical load