Investigation of the state of stress of solid rock with inhomogeneous structure by means of the method of finite elements

1975 ◽  
Vol 11 (3) ◽  
pp. 194-198
Author(s):  
V. Ya. Stepanov ◽  
S. A. Balalaeva
2014 ◽  
Vol 4 (3) ◽  
pp. 172-181
Author(s):  
F. Bolina ◽  
B. Tutikian

RESUMONo que tange assuntos concernentes à infraestrutura, observa-se que a rodovia brasileira Mário Quintana, a chamada ERS-118, situada no estado do Rio Grande do Sul, Brasil, anuncia-se em circunstâncias alarmantes de conservação e trafegabilidade devido ao elevado grau de deterioração do pavimento. O objetivo deste trabalho é analisar as possíveis causas que culminaram no surgimento de manifestações patológicas nas placas de concreto desta rodovia. O estudo baseou-se na análise estrutural destes elementos. Para tanto, este trabalho fundamentou-se no método de dimensionamento por elementos finitos e na subsequente análise dos resultados pela correlação entre tensões produzidas versus número admissível de eixos passantes. O estudo foi dividido em três partes: (1º) método de análise estrutural das placas, (2º) discussão dos resultados e (3º) conclusão. Como resultado, verificou-se que muitas das manifestações patológicas podem ter provindo do efeito térmico resultante sobre as placas.Palavras clave: Patologia; Pavimentos; Concreto.ABSTRACTRegarding issues pertaining to infrastructure, it is observed that the Brazilian’s highway Mário Quintana, call ERS-118, located in the state of Rio Grande do Sul , Brazil , announces in alarming conservations circumstances and trafficability due to the high deterioration degree of the pavement . The objective of this work is to analyze the possible causes that produced the pathological manifestations in the pavement concrete. The study was based on the structural analysis of these elements. Therefore, this study was based on the method of finite elements and subsequent analysis of the results produced by the correlation between stress versus number of permissible axle bushings. The study was divided into three parts: (1) method of pavement’s structural analysis, (2) discussion of the results and (3) conclusion. As a result, it was found that many of the pathological manifestations may have stemmed from the thermal effects arising in the pavement concrete.Keywords: Pathology; Pavements; Concrete.


1973 ◽  
Vol 9 (3) ◽  
pp. 227-235 ◽  
Author(s):  
Yu V. Nemirovskii ◽  
V. E. Mirenkov

Author(s):  
Nils Cwiekala ◽  
David A Hills

The state of stress present in an elastic half-plane contact problem, where one or both bodies is subject to remote tension has been investigated, both for conditions of full stick and partial slip. The state of stress present near the contact edges is studied for different loading scenarios in an asymptotic form. This is of practical relevance to the study of contacts experiencing fretting fatigue, and enables the environment in which cracks nucleate to be specified.


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