scholarly journals The strength of concrete beams; results of tests of 108 beams, first series, made at the structural materials testing laboratories

10.3133/b344 ◽  
1908 ◽  
Keyword(s):  
Concrete Beams ◽  
Structural Materials ◽  
Materials Testing ◽  
Testing Laboratories

scholarly journals Fatigue of the automobile structural materials in corrosive environment

2020 ◽  
Vol 164 ◽  
pp. 03039
Author(s):  
German Pachurin ◽  
Diana Goncharova ◽  
Gor Gevorgyan ◽  
Aleksey Filippov ◽  
Marya Mukhina ◽  
...  
Keyword(s):  
Fatigue Behavior ◽  
Experimental Studies ◽  
Structural Materials ◽  
Operational Reliability ◽  
Machine Building ◽  
Materials Testing ◽  
Corrosive Environment ◽  
Fatigue Rupture ◽  
New Processing ◽  
Experimental Data Analysis

Operation of machines and equipment is accompanied by an impact produced by various types of loads leading to fatigue rupture of the structural materials. The most harmful are the vibration loads which in a corrosive environment increase the potential for a failure resulting in human casualties. Therefore, the task of ensuring the operating capability of machine elements and assemblies is one of the outstanding tasks for all industry sectors. In addition, the need for extending the service life and increasing the operational reliability is also determined by a relatively high cost of the machine structural materials and hardware items. Therefore, the execution of the experimental studies of the structural material fatigue features with a view to reduce the metal consumption, to establish new processing methods as well as to select a competitive material, are of the priority for the up-to-date machine building sector. The purpose of this article is to determine any fatigue behavior regularities in automotive materials which were pre-processed according to various technology types and modes and which were operating in a corrosive environment. The experimental data analysis has demonstrated that the longer the cyclic metal materials testing is run, the more sufficient is the decrease of the fatigue resistance of these.

scholarly journals Numerical analysis of inelastic reinforced high-strength concrete beams with low reinforcement ratio

2009 ◽  
Vol 4 (1) ◽  
pp. 005-030
Author(s):  
Piotr Smarzewski
Keyword(s):  
High Strength Concrete ◽  
Concrete Beams ◽  
Constitutive Models ◽  
High Strength ◽  
Structural Materials ◽  
Reinforcement Ratio ◽  
Reinforced Concrete Beams ◽  
Flexural Behavior ◽  
Element Analysis ◽  
Strength Concrete

Numerical modelling of flexural behavior of the reinforced highstrength concrete beams with low reinforcement ratio is discussed in this paper. Modelling mechanism of failure reinforced concrete beams under static load, static deformation processes of the reinforced high-strength concrete beams with regard to the physical nonlinearities of the structural materials (i.e. concrete and reinforcement steel) were developed using finite element analysis. The comparison of the numerical and experimental results as well as theoretical solutions, were presented. The compared results indicate correctness of the constitutive models of the structural materials: concrete and reinforcing steel and effectiveness of the solution method.

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