Latin American Journal of Solids and Structures 

About: Latin American Journal of Solids and Structures is an academic journal published by Brazilian Society of Mechanical Sciences and Engineering. The journal publishes majorly in the area(s): Finite element method & Nonlinear system. It has an ISSN identifier of 1679-7817. It is also open access. Over the lifetime, 1295 publications have been published receiving 12982 citations.

Split hopkinson pressure bar techniques for characterizing soft materials

Abstract: EFICIENT USAGE OF SOFT MATERIALS UNDER IMPACT LOADING CONDITIONS REQUIRES ACCURATE AND RELIABLE DESCRIPTIONS OF THE HIGH-RATE MECHANICAL RESPONSES OF SUCH MATERIALS, WHICH MOTIVATES RECENT DEVELOPMENT OF VALID AND E±CIENT DYNAMIC EXPERIMENTAL TECHNIQUES. SPLIT HOPKINSON PRESSURE BAR (SHPB) HAS BEEN EXTENSIVELY USED TO CHARACTERIZE DYNAMIC BEHAVIOR OF METALLIC MATERIALS, BUT LESS FOR SOFT MATERIALS BECAUSE OF EXPERIMENTAL UNCERTAINTIES ASSOCIATED WITH SOFT MATERIAL CHARACTERIZATION. THIS PAPER FIRST PRESENTS MAJOR CHALLENGES ENCOUNTERED IN HOPKINSON BAR EXPERIMENTS ON SOFT MATERIALS, INCLUDING WEAK TRANSMITTED SIGNALS, DYNAMIC STRESS EQUILIBRIUM, AND CONSTANT STRAIN RATE, AND THEN SUMMARIZES RECENT RESEARCH E®ORTS IN THE MODIFICATIONS TO THE CONVENTIONAL SHPB FOR OBTAINING VALID AND ACCURATE STRESS-STRAIN DATA FOR SOFT MATERIALS.

Non-linear vibration of Euler-Bernoulli beams

Abstract: In this paper, variational iteration (VIM) and parametrized perturbation (PPM) methods have been used to investigate non-linear vibration of Euler-Bernoulli beams subjected to the axial loads. The proposed methods do not require small parameter in the equation which is difficult to be found for nonlinear problems. Comparison of VIM and PPM with Runge-Kutta 4th leads to highly accurate solutions.

A review paper on looseness detection methods in bolted structures

Abstract: BOLTED STRUCTURES ARE WIDELY UTILIZED IN INDUSTRIAL STRUCTURES AND EQUIPMENT DUE TO THE NUMEROUS ADVANTAGES THEY POSSESS. HOWEVER, THE USE OF BOLTS IN THESE STRUCTURES BY ITSELF CAN CAUSE CONSIDERABLE FLAWS OR DAMAGES. ONE OF THE MAJOR REASONS OF FLAW IN SUCH STRUCTURES IS LOOSENESS. SINCE THE LOOSENESS IS INITIATED WITH A REDUCTION IN THE AXIAL FORCE, MEASUREMENT AND ESTIMATION OF THIS FORCE CAN CONTRIBUTE TO A HEALTHY PERFORMANCE OF THE STRUCTURE. THE METHODS USED TO MEASURE AXIAL FORCE OF BOLTS ARE DIVIDED INTO TWO: THOSE WHICH MEASURE OR ESTIMATE THE FORCE DIRECTLY AND THOSE WHICH, BY CONTROLLING PHYSICAL PARAMETERS, DO THIS INDIRECTLY. BA- SED ON THIS CATEGORIZATION, THIS PAPER EXAMINES OVER 16 METHODS USED FOR EVALUATION OF AXIAL FORCE OF BOLTED STRUCTURES, AND PRESENTS THEIR THEORETICAL BASES, DRAWBACKS AND ADVANTAGES, WITH THE LITERA- TURE ON EACH METHOD BEING DISCUSSED SEPARATELY. FINALLY, THE MET- HODS ARE COMPARED AND THE MOST IMPORTANT CRITERIA IN SELECTING THE METHODS ARE INTRODUCED.

Mechanical and corrosion behavior of al7075 (hybrid) metal matrix composites by two step stir casting process

Abstract: THIS PAPER INVESTIGATES THE MECHANICAL PROPERTIES AND CORROSION BEHAVIOR OF METAL MATRIX COMPOSITES PREPARED USING AL7075 ALLOY AS A MATRIX, SILICON CARBIDE AND TITANIUM CARBIDE AS REINFORCEMENT PARTICLES. TWO STEP STIR CASTING PROCESS WAS USED TO FABRICATE THE COMPOSITES BY VARYING VOLUME FRACTIONS OF SILICON CARBIDE AND TITANIUM CARBIDE (0 TO 15 VOL. %). MICROSTRUCTURAL ANALYSIS, MECHANICAL AND CORROSION BEHAVIOR WERE USED TO EVALUATE THE PERFORMANCE OF THE COMPOSITES. UNIFORM DISTRIBUTION OF REINFORCEMENT PARTICLE WAS OBSERVED THROUGH OPTICAL PHOTOMICROGRAPHS. VICKERS MICRO HARDNESS TESTS WERE PERFORMED AND THE HARDNESS VALUES WERE INCREASED WITH AN INCREASE IN REIN-FORCEMENT FROM 0 TO 15 VOL. %. THE TENSILE STRENGTH OF THE 10 VOL. % OF ALUMINUM HYBRID MATRIX COMPOSITE WAS BETTER THAN THAT OF THE BASE ALLOY. IN 3.5% NACL SOLUTION, IT WAS OBSERVED THAT THE 15 VOL. % OF THE ALUMINUM HYBRID MATRIX COMPOSITE HAVE HIGHER CORROSION RE-SISTANCE IN COMPARISON THE BASE ALLOY.

Finite Element Analysis of Reinforced Concrete Beam-Column Connections with Governing Joint Shear Failure Mode

Abstract: REINFORCED CONCRETE (RC) BEAM-COLUMN CONNECTIONS ESPECIALLY THOSE WITHOUT TRANSVERSE REINFORCEMENT IN JOINT REGION CAN EXHIBIT BRITTLE BEHAVIOR WHEN INTENSIVE DAMAGE IS CONCENTRATED IN THE JOINT REGION DURING AN EARTHQUAKE EVENT. BRITTLE BEHAVIOR IN THE JOINT REGION CAN COMPROMISE THE DUCTILE DESIGN PHILOSOPHY AND THE EXPECTED OVERALL PERFORMANCE OF STRUCTURE WHEN SUBJECTED TO SEIS-MIC LOADING. CONSIDERING THE IMPORTANCE OF JOINT SHEAR FAILURE INFLUENCES ON STRENGTH, DUCTILITY AND STABILITY OF RC MOMENT RESISTING FRAMES, A FINITE ELEMENT MODELING WHICH FOCUSES ON JOINT SHEAR BEHAVIOR IS PRESENTED IN THIS ARTICLE. NONLINEAR FINITE ELEMENT ANALYSIS (FEA) OF RC BEAM-COLUMN CONNECTIONS IS PERFORMED IN ORDER TO INVESTIGATE THE JOINT SHEAR FAILURE MODE IN TERMS OF JOINT SHEAR CAPACITY, DEFORMATIONS AND CRACKING PATTERN. A 3D FINITE ELEMENT MODEL CAPABLE OF APPROPRIATELY MODELING THE CONCRETE STRESS-STRAIN BEHAVIOR, TENSILE CRACKING AND COMPRESSIVE DAMAGE OF CONCRETE AND INDIRECT MODELING OF STEEL-CONCRETE BOND IS USED. IN ORDER TO DEFINE NONLINEAR BEHAVIOR OF CONCRETE MATERIAL, THE CON-CRETE DAMAGE PLASTICITY IS APPLIED TO THE NUMERICAL MODEL AS A DISTRIBUTED PLASTICITY OVER THE WHOLE GEOMETRY. FINITE ELEMENT MODEL IS THEN VERIFIED AGAINST EXPERIMENTAL RESULTS OF TWO NON-DUCTILE BEAM-COLUMN CONNECTIONS (ONE EXTERIOR AND ONE INTERIOR) WHICH ARE VULNERABLE TO JOINT SHEAR FAILURE. THE COMPARISON BE-TWEEN EXPERIMENTAL AND NUMERICAL RESULTS INDICATES THAT THE FE MODEL IS ABLE TO SIMULATE THE PERFORMANCE OF THE BEAM-COLUMN CONNECTIONS AND IS ABLE TO CAPTURE THE JOINT SHEAR FAILURE IN RC BEAM-COLUMN CONNECTIONS.