Journal articles: 'Flexural analysis'

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Back. "Flexural Analysis of Laminated Composite T-Beams." Journal of Korean Society of Steel Construction 26, no. 5 (2014): 397. http://dx.doi.org/10.7781/kjoss.2014.26.5.397.

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Imam, Mahmoud, Lucie Vandewalle, and Fernand Mortelmans. "Shear – moment analysis of reinforced high strength concrete beams containing steel fibres." Canadian Journal of Civil Engineering 22, no. 3 (June 1, 1995): 462–70. http://dx.doi.org/10.1139/l95-054.

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This paper concerns the incorporation of steel fibres in singly reinforced high strength concrete beams without stirrups failing under the combined effect of flexure and shear. A new equation for predicting the shear strength of reinforced high strength concrete beams is developed. This equation shows a good correlation with own test data of 16 reinforced high strength concrete beams with and without steel fibres and numerous published experimental data for beams with concrete compressive strength up to 140 MPa. The flexural capacity of reinforced high strength concrete beams is also investigated. The existing ACI method for predicting the flexural strength of steel fibre concrete composites is slightly modified to be applicable for high strength concrete. Based on the proposed equations, an analytical model is developed for predicting the relative flexural capacity, i.e., the ratio of the moment with shear interaction to the pure flexural moment. Key words: high strength concrete, steel fibre, shear strength, flexural strength, stirrups, web reinforcement.

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Ibrahim, Ahmed M. M., and Perry Adebar. "Effective flexural stiffness for linear seismic analysis of concrete walls." Canadian Journal of Civil Engineering 31, no. 4 (August 1, 2004): 597–607. http://dx.doi.org/10.1139/l04-014.

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A trilinear bending moment – curvature model is used to develop a general method for determining the effective flexural stiffness of concrete walls for use in linear seismic analysis. The method accounts for the initial section stiffness EcIg prior to cracking and the retention of initial stiffness after cracking due to axial compression from gravity loads closing cracks. Accounting for the initial stiffness is particularly important for typical high-rise concrete walls, which have significant compression and low percentages of vertical reinforcement. The effective flexural stiffness is determined from the slope of the elastic portion of an equivalent elastic-plastic load–deflection curve that has the same area under the curve as the actual nonlinear relationship. The general method requires information about the vertical reinforcement and strength of the wall. Simplified expressions are proposed to estimate the effective flexural stiffness based only on the axial compression near the base of the wall. Separate expressions for upper- and lower-bound effective stiffness establish the range of possible values, and this is less than the variation of recommendations in the literature on how much to reduce the flexural stiffness of concrete walls to account for cracking.Key words: displacement, flexure, reinforced concrete, seismic analysis, stiffness, structural walls.

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Climente, Alfonso, Daniel Torrent, and José Sánchez-Dehesa. "Analysis of flexural wave cloaks." AIP Advances 6, no. 12 (December 2016): 121704. http://dx.doi.org/10.1063/1.4968611.

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Sawant, M. M., and P. R. Anerao. "Investigation of Circular Flexural Hinge Used in Compliant Mechanism Using FEA Tool." International Journal of Engineering Technology and Sciences 3, no. 1 (June 30, 2016): 34–42. http://dx.doi.org/10.15282/ijets.5.2016.1.5.1044.

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To reduce fatigue failure of compliant mechanism, it is necessary to design and analyze the flexure hinge parametrically. A methodology to design a flexural hinges for compliant mechanism is proposed in this paper to improve fatigue life. Results obtained by finite element analysis shows that used design equations are reliable and easier to be used in the design of such proportion flexural hinges. The proposed analytical model gives a new viewpoint on the design of circular flexure hinge based compliant mechanisms. Circular flexural joint was manufactured by using Al 6061 T6 material and experimental setup is developed to test this flexural hinge. Results obtained by FEA were found to be in good correlation with experimental results. The variation in the results can be attributed to variation in properties of material, actual dimensions of setup etc.

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Li, Chun Xia, Zhi Sheng Ding, and Shi Lin Yan. "Analysis on Flexural Capacity of FRP Reinforced Concrete Members." Advanced Materials Research 446-449 (January 2012): 98–101. http://dx.doi.org/10.4028/www.scientific.net/amr.446-449.98.

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The balanced reinforcement ratio of FRP-reinforced concrete members and the flexural capacity under two different failure modes (concrete crushing and FRP rupture) are established, based on the analysis on flexural capacity of steel-reinforced concrete members in current concrete code. The effect of material properties on the balanced ratio, the variation of flexural capacity with different reinforcement ratio and a simplified nominal flexural capacity under FRP-rupture failure are derived.

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Da Silva, M. R. M. Crespo. "Non-linear flexural-flexural-torsional-extensional dynamics of beams—II. Response analysis." International Journal of Solids and Structures 24, no. 12 (1988): 1235–42. http://dx.doi.org/10.1016/0020-7683(88)90088-1.

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Cao, Ping Zhou, De Li, and Rong Zhuo Lin. "Experimental Investigation on Flexure Performance of New Steeldeck-Concrete Thermal Insulation Composite Floor Slabs." Applied Mechanics and Materials 584-586 (July 2014): 993–96. http://dx.doi.org/10.4028/www.scientific.net/amm.584-586.993.

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A new Steel deck-concrete composite floor slabs was proposed that with the effect of het preservation and insulation, and the flexure performance of the slabs has been studied. Calculation method of flexural bearing capacity was put forward. Based on comparative and analysis experimental results, it has been verified that the applicability of new formula of flexural bearing capacity of the new slabs.

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Climente, Alfonso, Daniel Torrent, and Jose Sanchez-Dehesa. "Analysis of cloaks for flexural waves." Journal of the Acoustical Society of America 138, no. 3 (September 2015): 1734. http://dx.doi.org/10.1121/1.4933462.

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Subramanian, P. "Flexural analysis of laminated composite plates." Composite Structures 45, no. 1 (May 1999): 51–69. http://dx.doi.org/10.1016/s0263-8223(99)00014-8.

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Pan Xiao-Juan and He Xi-Ping. "Analysis of flexural vibration thick disk." Acta Physica Sinica 59, no. 11 (2010): 7911. http://dx.doi.org/10.7498/aps.59.7911.

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TSUDA, Keigo, Masae KIDO, and Masanori KOBAYASHI. "APPROXIMATE ANALYSIS OF FLEXURAL-TORSIONAL BUCKLING STRENGTH USING FLANGE FLEXURA L BUCKLING STRENGTH." Journal of Structural and Construction Engineering (Transactions of AIJ) 77, no. 678 (2012): 1309–18. http://dx.doi.org/10.3130/aijs.77.1309.

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Khan, Zeba, Hrishikesh Zambare, Suhas Deshmukh, and Abhijeet Shinde. "Parametric FEA Analysis of Double Flexural Manipulator for Precision Application." Applied Mechanics and Materials 612 (August 2014): 59–64. http://dx.doi.org/10.4028/www.scientific.net/amm.612.59.

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A Flexural mechanism uses flexibility of material for desired motion objectives. As compared rigid-body mechanisms where actuations are applied at the joints connecting rigid links, the manipulation of the Flexural mechanism relies on the deflection of internal flexible members. Flexural mechanisms have no relative moving parts (and thus involve no wear, backlash, noise and lubrication), are relatively compact in design as compared to rigid link mechanism. Double Flexural Manipulator (DFM) is basic building block for planar flexural mechanism. This paper explains working principle of DFM and its parametric modelling. DFM has three basic parameters which decides range of motion, actuator requirement (Peak force and continuous force). In this paper Parametric FEA analysis is carried on DFM and verified with Analytical Model. This parametric modelling can be further used for designing and developing a flexural mechanism for precision applications.

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Ratzlaff, K. P., and D. J. L. Kennedy. "Analysis of continuous steel plates subjected to uniform transverse loads." Canadian Journal of Civil Engineering 12, no. 3 (September 1, 1985): 685–99. http://dx.doi.org/10.1139/l85-075.

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The economic design of steel caissons for drilling and production platforms in the Arctic Ocean, formed from steel plates and supported by a rectangular grid of stiffeners, beams, and girders, requires that the full strength of the plates be mobilized to withstand extreme ice forces. A comprehensive method of analysis is needed to describe the behaviour of continuous steel plates into the inelastic range when they are acted upon by transverse loads. From this analysis, design procedures could then be developed.An extensive literature search has not revealed that satisfactory solutions exist for the load–deflection response of transversely loaded flat plates beyond the elastic limit when both flexural and membrane action are taken into account. Experimental data available in the inelastic range of behaviour are also limited.By considering various limiting simplified behavioural modes for the load–deflection response of uniformly loaded flat plates of zero aspect ratio, possible load–deflection domains are established. The limiting responses investigated are: elastic–inelastic flexural action, elastic membrane action, inelastic membrane action with increased stiffness resulting from increased Poisson's ratio in the inelastic range, elastic flexural membrane action, and action of a fully yielded cross section in flexure that gradually gives away to a fully yielded cross section in tension. Within the domain so established, a load–deflection behaviour is proposed that is in reasonable agreement with the results of the limited test data available. The results of a finite element analysis using the ADINA computer program are also in reasonable agreement with the proposed analysis. Design applications are discussed. Key words: deflection, elastic, elastoplastic, flexural resistance, membrane force, membrane resistance, plates, steel, strains, stresses, transverse load.

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Tang, Li, Xiongliang Yao, Guoxun Wu, and Dong Tang. "Band Gaps Characteristics Analysis of Periodic Oscillator Coupled Damping Beam." Materials 13, no. 24 (December 16, 2020): 5748. http://dx.doi.org/10.3390/ma13245748.

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The vibration of the periodic oscillator coupled damping beam model is reduced through the band gaps designing method, which can be applied in equivalent engineering structures. In this paper, the flexural wave dispersion relations of the infinite long periodic oscillator coupled damping beam were calculated using the reverberation-ray matrix method combined with the Bloch theorem. The flexural wave vibration frequency response function of the finite long periodic oscillator coupled damping beam was carried out using the finite element method. The flexural wave vibration band gaps occur in the infinite long periodic oscillator coupled damping beam model in both the analytical and numerical results. In these band gaps, flexural waves’ propagation is prohibited, and flexural vibration is significantly suppressed. Furthermore, the effects of structure and material parameters on the flexural wave vibration band gaps characteristics are studied. Thus, the structural vibration reduction design can be realized by adjusting the related parameters of the periodic coupled damping beam structures and the equivalent 2D periodic stiffened plate structures.

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Li, Wen Sheng, and Kai Wang. "Nonlinear Analysis of R.C Beams Strengthened with CFRP." Applied Mechanics and Materials 166-169 (May 2012): 1517–20. http://dx.doi.org/10.4028/www.scientific.net/amm.166-169.1517.

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In order to study on the flexural performances of beams strengthened with external bonded carbon fiber reinforced polymer（CFRP）sheets, nonlinear analysis is carried out by using software ANSYS. The results show that a reasonable finite element model, using a reasonable solution strategy can be a good simulation of CFRP flexural performance of reinforced concrete beams, and finite element analysis results with the experimental results have good consistency .The beams reinforced by carbon fiber polymer，the capacity of flexural resistance increased with the numbers of carbon fiber paste sheets, reinforced components of flexural capacity significantly improved, but the extent of its increase is not proportional with the numbers of carbon fiber paste sheets.

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Luo, Hong Ping, Zhi Xiong Zhou, Yong Jun Zhang, and Zhong Ning Guo. "Wire Electrical Discharge Machining (Wire EDM) Cutting of Flexures for a Rotary Flexural Bearing Fabrication." Advanced Materials Research 314-316 (August 2011): 1727–33. http://dx.doi.org/10.4028/www.scientific.net/amr.314-316.1727.

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Wire electrical discharge machining (Wire EDM) cutting of flexures for a rotary flexural bearing fabrication is developed. The results of FEA calculation and theoretical analysis show that one of the main factors affecting flexures’ machining is the weak torsional stiffness of the bearing cage, thus excessive deflections due to machining stress, heat generation and spark-induced vibrations may occur. To minimize flexure deflection during the machining process, a specially designed fixture is utilized. Other technical measures, including residual stress relief before and after Wire EDM cutting, reasonable cutting sequence planning, multiple-cutting (i.e., rough cut followed by several trim cuts) etc., are also adopted for cutting. Dimensional accuracy of ±5µm was obtained over the 150µm thickness for the bearing flexures, a variation of less than 3µm was achieved for the flexures of opposing sides, and surface roughness of better than Ra 0.3μm was obtained for the flexures of the entire bearing cage. These results show the validity of measures aforementioned.

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Hemamathi, A., Binu Sukumar, and R. B. Hambrish Guru Chantrakant. "Numerical Analysis of RCC Beam Using ABAQUS." IOP Conference Series: Earth and Environmental Science 1084, no. 1 (October 1, 2022): 012077. http://dx.doi.org/10.1088/1755-1315/1084/1/012077.

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Abstract Experimental investigation of RCC beam provide an important understanding on its flexural properties. The stages involved from the design to casting, curing, testing and interpretation of results is time consuming and involves economy and labour. To reduce the above said challenges, numerical investigation seems to be an alternate without involvement of money and labour. Preliminary design stages involves design equation which are provided by the basic experiments conducted and they also give the basic information to develop the finite element model. This paper presents the numerical investigation of RCC beam to study the flexural properties using an effective finite element analysis tool ABAQUS. RCC beam prototypes were casted and their flexural properties were experimentally investigated. The results were validated through the finite element model by providing suitable properties for the material that are actually used for the prototype with the desired loading and support conditions. Beam of size 3000 x 230 x 300 mm of M20 grade concrete was casted and tested in the loading frame for flexure and deflection. The study focussed for under reinforced, balanced and over reinforced sections. Numerical analysis was performed using ABAQUS for model geometry and the results were compared with the experimental results. The results agreed with both the experimental and numerical values. Numerical results helps in developing reliable models which can reduce the number of required test specimens for conducting experiments and the model can be used for various study. Also from the finite element results the propagation of cracks can be well understood for the actual specimen.

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Merhej, Tammam, Xin Kai Li, and De Cheng Feng. "Polypropylene Fiber Reinforced Concrete for Airport Rigid Pavements: Compressive and Flexural Strength." Advanced Materials Research 219-220 (March 2011): 1601–7. http://dx.doi.org/10.4028/www.scientific.net/amr.219-220.1601.

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This paper presents the experimental investigation carried out to study the behavior of polypropylene fiber reinforced concrete (PPFRC) under compression and flexure. Crimped polypropylene fibers and twisted polypropylene fiber were used with 0.0%, 0.2%, 0.4% and 0.6% volume fractions. The influence of the volume fraction of each shape of polypropylene fiber on the compressive strength and flexural strength is presented. Empirical equations to predict the effect of polypropylene fiber on compressive and flexural strength of concrete were proposed using linear regression analysis. An increase of 27% in flexural strength was obtained when 0.6% volume fraction of twisted polypropylene fiber was added. It was also found that the contribution of fiber in flexural strength is more effective when twisted fibers were used. The compressive strength was found to be less affected by polypropylene fiber addition.

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Pazhanivel, K., N. Ramadoss, K. Poyyathappan, P. Anandan, and G. B. Bhaskar. "Flexural Analysis on GFRP Composites Subjected to Cyclic Gradual Load and Cyclic Impact." Advanced Materials Research 685 (April 2013): 35–39. http://dx.doi.org/10.4028/www.scientific.net/amr.685.35.

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Glass fiber reinforced polymeric (GFRP) composite laminates have been prepared by hand layup method. According to ASTM standard, the test specimens have been prepared to carry out the flexural bending tests. The specimens have been subjected to both cyclic impact load and cyclic gradual load with various frequencies prior to the flexural bending analysis. Three point bend method has been adopted to find out the flexural strength and flexural modulus. Flexural strength and modulus have been calculated from the load deflection curve obtained from the tensometer for respective specimens. The flexural bending properties of GFRP composites subjected to cyclic gradual load and cyclic impact have been compared and found that the GFRP composite materials are effective for gradual cyclic load than the cyclic impact load.

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Balos, Sebastian, Branislava Petronijevic Sarcev, Ivan Sarcev, Petar Janjatovic, Branka Pilic, and Tatjana Balos. "Flexural Modulus and Strength of Cold Cured Poly(methylmethacrylate) Reinforced with TiO2 Nano Particles." Materiale Plastice 57, no. 4 (January 6, 2021): 13–20. http://dx.doi.org/10.37358/mp.20.4.5402.

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The most significant disadvantage of cold cured poly (methyl methacrylate) - PMMA is its poor mechanical properties, mainly in flexure. The aim of this work is to explore the modulus and flexural strength of modified cold cured PMMA modified with low TiO2 addition, which can also have antibacterial properties. Commercial cold cured PMMA resin, consisting of powder and liquid components, were modified by adding 0.05 %, 0.2 %, and 1.5 wt. % 20 nm hydrophobic TiO2. The specimen s flexural modulus and strength were tested, while heat properties were determined with DSC analysis. SEM and EDX were used to study fracture surfaces of tested specimens. In all modified specimens, an increased flexural modulus and flexural strength were recorded. In all specimens, the appearance of agglomerates was noted. Glass transition temperatures also increased, as the result of the appearance of polymer chains with reduced mobility around nanoparticles. 0.2 % of 20 nm TiO2 nanoparticle content proved to be the most efficient in increasing flexural modulus and strength.

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Sun, Li, Ajay P. Malshe, Wenping Jiang, and Philip H. McCluskey. "Effects of CO2 Laser Surface Processing on Fracture Behavior of Silicon Nitride Ceramic." Journal of Engineering Materials and Technology 128, no. 3 (January 23, 2006): 460–67. http://dx.doi.org/10.1115/1.2203104.

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Surface defects generated by grinding deteriorate the flexural strength of the silicon nitride (Si3N4) ceramic. In this paper, CO2 laser surface processing was applied to eliminate the grinding-induced defects. SEM micrograph showed that the surface integrity of Si3N4 samples was improved after laser processing. Four-point bending tests and fractographic analysis indicated that the flexural strength and fracture origins were affected by the change of surface integrity in laser-treated Si3N4 samples. The effect of grinding-induced residual stress on flexural strength of laser-treated samples was discussed. It was concluded that laser surface processing had significant effects on fracture behavior of flexure Si3N4 samples.

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Shaban Ali Nezhad, H., S. A. A. Hosseini, and M. Zamanian. "Flexural–flexural–extensional–torsional vibration analysis of composite spinning shafts with geometrical nonlinearity." Nonlinear Dynamics 89, no. 1 (March 30, 2017): 651–90. http://dx.doi.org/10.1007/s11071-017-3479-0.

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Firly, Raden Rubani, Hendri Syamsudin, Muhammad Kusni, and Djarot Widagdo. "Numerical and Experimental Analysis of Flexural Properties of Bamboo Tali Laminate Composite." Advanced Materials Research 1125 (October 2015): 100–105. http://dx.doi.org/10.4028/www.scientific.net/amr.1125.100.

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This research was done to evaluate flexural properties (flexural strength, flexural modulus, and failure mode) of Bambu Tali (Gigantochloa Apus) composite. Lycal 1101 was used as matrix. Two types of laminate were tested in four point bending, unidirectional (00/00) s and symmetric cross ply (00/900) s. Results were then compared with numerical simulation using MSC PATRAN-NASTRAN to determine flexural strength and failure mode prediction for both specimens. All specimens were manufactured using cold press manufacturing method. Results show there was around 28% reduction in flexural strength from unidirectional specimen to symmetric cross ply. Numerical simulation results on failure mode prediction show good agreements with actual four point bending test.

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Chen, Huimin, Chunyan Xie, Chao Fu, Jing Liu, Xiuli Wei, and Dake Wu. "Orthogonal Analysis on Mechanical Properties of Basalt–Polypropylene Fiber Mortar." Materials 13, no. 13 (June 30, 2020): 2937. http://dx.doi.org/10.3390/ma13132937.

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Orthogonal test method was applied to analyze the strength properties of basalt-polypropylene mortar. The effect of basalt fiber length, polypropylene fiber length, basalt fiber volume content and polypropylene fiber volume content on the 28 d cube compressive strength and flexural strength were investigated. Test results show that comparing with flexural strength, the influence of basalt fiber length and polypropylene fiber length on compressive strength of mortar was greater than on flexural strength. The length of polypropylene fibers contributes the highest to the flexural strength. The effect of basalt fiber on mortar strength is the largest with 6 mm length and 4% content. Polypropylene fiber length has the greatest influence on the compressive strength of fiber mortar, followed by basalt fiber volume content. Volume content of polypropylene fiber has the greatest influence on flexural strength of fiber mortar, followed by polypropylene fiber length. According to the scoring of the efficacy coefficient method, the best ratio combination for compressive and flexural strength was the basalt fiber length of 9 mm, polypropylene fiber length of 6 mm, basalt fiber volume content of 4% and polypropylene fiber volume content of 4%. Compared with the blank samples, the 28 d compressive strength and 28 d flexural strength of the cement mortar samples were increased by 27.4% and 49% respectively. According to the test results, the properties of the fiber were analyzed and evaluated and the mechanism of fiber action and fiber microstructure were analyzed.

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Salem, J. A., N. N. Nemeth, L. M. Powers, and S. R. Choi. "Reliability Analysis of Uniaxially Ground Brittle Materials." Journal of Engineering for Gas Turbines and Power 118, no. 4 (October 1, 1996): 863–71. http://dx.doi.org/10.1115/1.2817007.

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The fast fracture strength distribution of uniaxially ground, alpha silicon carbide was investigated as a function of grinding angle relative to the principal stress direction in flexure. Both as-ground and ground/annealed surfaces were investigated. The resulting flexural strength distributions were used to verify reliability models and predict the strength distribution of larger plate specimens tested in biaxial flexure. Complete fractography was done on the specimens. Failures occurred from agglomerates, machining cracks, or hybrid flaws that consisted of a machining crack located at a processing agglomerate. Annealing eliminated failures due to machining damage. Reliability analyses were performed using two and three-parameter Weibull and Batdorf methodologies. The Weibull size effect was demonstrated for machining flaws. Mixed mode reliability models reasonably predicted the strength distributions of uniaxial flexure and biaxial plate specimens.

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Wang, Zhen Qing, Jia Lei Li, Yu Lai Han, and Zhu Ju. "Flexural-Torsional Buckling Analysis of Steel Beams under Transverse Loads in High Temperature." Advanced Materials Research 641-642 (January 2013): 432–35. http://dx.doi.org/10.4028/www.scientific.net/amr.641-642.432.

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Flexural-torsional buckling of steel beams in high temperature is studied by adopting the method of theoretical analysis. The flexural-torsional buckling critical moment equations of steel beams under concentrated transverse loads are driven in high temperature ranging from 20°C to 300°C. In order to verify the validity of the theoretical analysis equations, a steel beam model under concentrated transverse load is designed. The flexural-torsional buckling critical moments and critical stresses are calculated under different temperature conditions. The influence of load point on flexural-torsional buckling critical moment and critical stress are obtained. The variation tendency of flexural-torsional buckling critical moment and critical stress against temperature are also presented.

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Zhao, Y., Feng Lai Wang, and Fei Zhu. "The Effects of Applied Axial Stress on Lateral Bearing-Load Capacity for Fully Grouted Reinforced Concrete Masonry Shear Walls." Applied Mechanics and Materials 166-169 (May 2012): 2900–2905. http://dx.doi.org/10.4028/www.scientific.net/amm.166-169.2900.

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Ten full-scale fully grouted reinforced concrete masonry shear walls were tested under force-displacement controlled reversed cyclic lateral loads simulating seismic effects. Relevant experimental phenomena and data indicated four walls failing in shear failure and the other six walls failing in flexure to evaluate seismic performance under compress, flexure and shear combined action. The paper mainly examinates lateral bearing-load capacity through two parameters: initial crack and ultimate strength under different failure modes. Through experimental analysis it can be concluded that the shear strength at the initial crack and ultimate load improved with the increased applied axial stress, and the increment of the shear strength was different in shear failure and flexural failure modes. Meanwhile, the ratio of the initial crack load to ultimate load on shear mechanism was from 0.57 to0.59,which was more stable than that(from 0.52 to 0.66)on flexural mechanism. In other words, the applied axial stress have more significant influence on flexural failure walls than shear ones.

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Tambusay, Asdam, Benny Suryanto, Karen Chong, and Priyo Suprobo. "Nonlinear Analysis of Reinforced Geopolymer Concrete Beams." Civil Engineering Dimension 24, no. 1 (April 22, 2022): 1–10. http://dx.doi.org/10.9744/ced.24.1.1-10.

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To decarbonise the current construction sector and meet the global net-zero target, there is a pressing need to develop an environmentally friendly alternative to Portland cement concrete. Alkali activated and geopolymer concrete have much to offer in this regard. At present, however, there is limited study on the behaviours of alkali activated structural members, particularly on flexural members, which encompass most practical design situations. This paper presents a database of 37 tests on slender alkali activated and geopolymer concrete beams available in the literature, with the aim to investigate the flexural strengths of this alternative concrete when used as a structural member. In addition, the results of nonlinear finite element analyses on fourteen reinforced geopolymer concrete beams are presented to highlight key influencing factors governing the behaviour and failure of flexural members. Of particular interest is to study the influence of reinforcement ratio, compressive strength, and material brittleness on the overall strength and ductility. Overall, it is shown that the flexural response of geopolymer concrete beams under short-term loading is comparable to that of ordinary reinforced concrete beams.

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Grate, Jay W., Stuart W. Wenzel, and Richard M. White. "Flexural plate wave devices for chemical analysis." Analytical Chemistry 63, no. 15 (August 1991): 1552–61. http://dx.doi.org/10.1021/ac00015a011.

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Papargyri-Beskou, S., D. Polyzos, and D. E. Beskos. "Dynamic analysis of gradient elastic flexural beams." Structural Engineering and Mechanics 15, no. 6 (June 25, 2003): 705–16. http://dx.doi.org/10.12989/sem.2003.15.6.705.

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Huang, Wei, Qin Yong Ma, and Peng Bo Cui. "Experiment and Analysis of Flexural Strength for Shrinkage-Compensating Steel Fiber Reinforced Shotcrete." Advanced Materials Research 163-167 (December 2010): 947–51. http://dx.doi.org/10.4028/www.scientific.net/amr.163-167.947.

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The flexural strength of shotcrete which prepared for cementitious material incorporated with cements,accelerating agents and expensive agents is studied.By changing the fraction of steel fibers by volume and the addition percentage of expensive agent in binding material,the influence on flexural strength of the two factors is investigated,the mechanism of steel fibers and expensive agents work together to reinforce the shotcrete and the strength development law are analyzed.The result shows that, the flexural strength of steel fiber reinforced shotcrete is improving with the volume fractions of steel fibers increasing.And the flexural strength of shrinkage-compensating shotcrete is decreasing with the addition percentage of expensive agent in binding material adding except 6%. The flexural strength of shotcrete is rather better when the fraction of steel fibers by volume is 1.2%~1.6% and the addition percentage of expensive agent in binding material is 8%,which indicates that the restriction effect of steel fibers can enhance the flexural strength of shrinkage-compensating shotcrete,embodies the effect of synergistic enhancement and compounding effect with steel fibers and expensive agents.

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Ayub, Tehmina, Sadaqat Ullah Khan, and Nasir Shafiq. "Flexural Modelling and Finite Element Analysis of FRC Beams Reinforced with PVA and Basalt Fibres and Their Validation." Advances in Civil Engineering 2018 (2018): 1–18. http://dx.doi.org/10.1155/2018/8060852.

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A flexural capacity model for fibre-reinforced concrete (FRC) beams reinforced with PVA and basalt fibres is suggested for the rectangular beam sections. The proposed models are based on the concept of equivalent stress block parameters for both compressive and tensile stresses, similar to Eurocode and ACI code. The parameters are defined by allowing the conversion of the stress-strain models into equivalent rectangular stress blocks, similar to Eurocode 2. The flexural model is suggested to determine the loading capacity of 21 FRC beams containing up to 3% volume fraction of PVA and basalt fibres without reinforcing bars. In order to investigate the accuracy of the proposed flexure models, finite element analysis (FEA) of the same beams was carried out using the compressive and tensile stress-strain curves. Furthermore, 21 FRC beams subjected to three-point bending were tested. The results of the flexural models showed good agreement with the load-carrying capacity of the tested FRC beams, and the results of FEA of all beams showed a good correlation with the experimental results in terms of the maximum load, load versus midspan deflection patterns, and the maximum tensile strains.

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Xiang, Ling, and Shi Xi Yang. "Analysis of Flexural and Torsional Vibration for Turbogenerator Shafts on Power Impact." Advanced Materials Research 139-141 (October 2010): 2498–501. http://dx.doi.org/10.4028/www.scientific.net/amr.139-141.2498.

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Based on a Jeffcott rotor system with rigid support, the math models of flexural and torsional vibration were built, and their vibration characteristics were concluded. A simulation experiment in this paper was designed about the flexural and torsional vibration of shafts on a simulated turbine generator during network impacts. By analysis, flexural and torsional vibration characteristics were obtained, and the results showed the shafts flexural vibration and torsional vibration were interacted with each other. It was provided that torsional vibration could inhibit the complex shafts exercise. A new idea was suggested that the characteristics of torsion vibration should be considered as the symptom of faults diagnosis

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Okafor, Chinedum Vincent. "Finite Element Analysis of a Ribbed Roofing Panel under Static Flexure." European Journal of Engineering Research and Science 3, no. 6 (June 25, 2018): 15. http://dx.doi.org/10.24018/ejers.2018.3.6.648.

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This study focuses on analyzing the response of a typical ribbed aluminum panel under flexure. A three dimensional finite element model was developed to stimulate the static flexure behavior. The model is a 2.0m (length) x 1.0m (width) x 0.005m (Thickness) with a rib height of 0.038m, crest width of 0.019m and pan distance at 0.055m between intermediate ribs. The load deflection response of the aluminum panel under different flexural loading condition was stimulated. The linear material properties, displacement, stress and strain captured were discussed under static conditions. From the result obtained, the maximum uniformly distributed load carrying capacity of the ribbed aluminum roofing panel under flexure, considering the linear material properties is 665N.

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Okafor, Chinedum Vincent. "Finite Element Analysis of a Ribbed Roofing Panel under Static Flexure." European Journal of Engineering and Technology Research 3, no. 6 (June 25, 2018): 15–20. http://dx.doi.org/10.24018/ejeng.2018.3.6.648.

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This study focuses on analyzing the response of a typical ribbed aluminum panel under flexure. A three dimensional finite element model was developed to stimulate the static flexure behavior. The model is a 2.0m (length) x 1.0m (width) x 0.005m (Thickness) with a rib height of 0.038m, crest width of 0.019m and pan distance at 0.055m between intermediate ribs. The load deflection response of the aluminum panel under different flexural loading condition was stimulated. The linear material properties, displacement, stress and strain captured were discussed under static conditions. From the result obtained, the maximum uniformly distributed load carrying capacity of the ribbed aluminum roofing panel under flexure, considering the linear material properties is 665N.

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Zhang, Hao, Yi Gao, and Chang Hong Huang. "Analysis of Mechanical Properties of Fiber Reinforced Polymer Mortar." Materials Science Forum 1001 (July 2020): 47–52. http://dx.doi.org/10.4028/www.scientific.net/msf.1001.47.

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It is studied that effects of different amounts of steel fiber and glass fiber on the compressive strength, flexural strength, and compression ratio and bond strength of styrene-acrylic emulsion modified mortar under different ages. The results show that the compressive strength, flexural strength and bond strength of mortar increase with the increase of steel fiber content, and the toughness improvement effect is obvious. With the increase of glass fiber content, mortar compressive strength, flexural strength and bond strength first increases and then decreases. Combined with SEM analysis and theoretical calculation to analyze the mechanical strength mechanism of fiber reinforced polymer mortar.

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Ismy, Romaynoor, Husaini, M. Saleh Sofyan, and M. Isya. "Flexural Resistance Analysis on Hot Asphalt Mixtures with Wire Mesh Placement Modeling as Reinforcement." Key Engineering Materials 892 (July 13, 2021): 99–106. http://dx.doi.org/10.4028/www.scientific.net/kem.892.99.

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Flexural resistance is the ability of a specimen to withstand force in two pedestals with vertical axis until it is broken. Flexible pavement is a type of pavement which is very dependent with pavement course underneath. The dependency of flexible pavement in both base course and subgrade makes this pavement difficult to apply in unstable soil. Using wire mesh course as reinforcement is considerably able to raise the flexural resistance. This study is aimed to analyze flexural resistance value in hot mix by using wire mesh course as reinforcement. The study is conducted by applying experimental method with designing four types of wire mesh laying models in hot mix using three points flexural test equipment. Based on the study result, it is found that hot mix with wire mesh laying 30 mm from specimen surface is the best model type with 291,85 KN flexural resistance value with 8 mm of deflection depth. In this laying, it can be concluded that wire mesh course can raise up the flexural resistance up to 35,41% compared to the hot mix without wire mesh course.

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Coşkun, Safa Bozkurt. "ANALYSIS OF TILT‐BUCKLING OF EULER COLUMNS WITH VARYING FLEXURAL STIFFNESS USING HOMOTOPY PERTURBATION METHOD." Mathematical Modelling and Analysis 15, no. 3 (July 15, 2010): 275–86. http://dx.doi.org/10.3846/1392-6292.2010.15.275-286.

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In this paper, the Homotopy Perturbation Method (HPM), is introduced for elastic stability analysis of tilt‐buckled columns with variable flexural stiffness. Buckling loads and corresponding mode shapes are determined considering different types of variations in flexural stiffness of columns. The proposed approach is an efficient technique for the elastic stability analysis of specified problems.

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Gong, Dao, and Wen Jing Sun. "Analysis of Resonant Vibration of Railway Vehicle." Applied Mechanics and Materials 752-753 (April 2015): 632–35. http://dx.doi.org/10.4028/www.scientific.net/amm.752-753.632.

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A fully equipped railway vehicle dynamic model which considers the car body flexibility is established to analyze the fundamental reason of car body flexural resonance. Results show that it is the geometric filtering phenomenon rather than the natural vibration of bogie bounce that causes the car body resonant flexural vibration. The higher the vehicle running speed, the higher the first vertical bending frequency should be required.

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Kopparthi, Phaneendra Kumar, Srikar Gemaraju, Bhaskara Rao Pathakokila, and Suresh Gamini. "Failure analysis of delaminated carbon/epoxy composite under pure bending: validation with numerical analysis." Multidiscipline Modeling in Materials and Structures 17, no. 5 (July 6, 2021): 974–89. http://dx.doi.org/10.1108/mmms-01-2021-0015.

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PurposeDelamination is a common and crucial damage mode which occurs during manufacturing of layered composites or their service life. Its existence leads to degradation in mechanical properties or even structural failure of composites. Hence, the purpose of this article is to study the effect of induced delamination on flexural performance of CFRP composites.Design/methodology/approachIn this article, the flexural behaviors of intact and delaminated carbon/epoxy laminates were investigated under pure bending. A circular PTFE film was introduced during fabrication to create artificial delamination. Moreover, finite element models were developed for intact and delaminated composites using ANSYS. The created models were discretized using 3D structural eight node solid elements.FindingsThe delamination influenced considerably flexural properties of composite. The composite exhibited a linear elastic nature prior to the damage of top ply on the compression side. The flexural strength and stiffness of the composite reduced to 44.5% and 18.2% respectively due to the existence of artificial delamination. The results of four point bending experiments and finite element analysis agreed for both intact and delaminated composites within acceptable error. Finally for same composites, first ply failure analysis was carried out using Tsai-Hill, Tsai-Wu and Hashin failure criteria.Originality/valueIn pure bending, beam section of the middle portion is free from shear. It is not so in case of three-point bending. Hence, the effect of embedded artificial defect on bending performance of CFRP composite due to pure bending has been investigated.

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Xia, Yuanxin, Chunxiu Han, Donghua Zhou, Yonghui Wang, and Peng Wang. "Ultimate flexural strength analysis of composite slim floor beam." Advances in Structural Engineering 24, no. 10 (February 15, 2021): 2214–26. http://dx.doi.org/10.1177/1369433221994340.

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This paper presents a new type of composite slim floor beam, determined by combining the results of an experimental study and theoretical analysis of the ultimate flexural strength of slim floor beams. The shear connectors play a significant role in the mechanical properties of this type of composite slim floor beam, because the precast concrete slab is laid on the bottom flange of the steel section and because the upper portion of the steel beam is encased in the cast-in-place concrete slab. To investigate the ultimate flexural strength, three specimens, which included headed studs, transverse steel bar shear connectors and no shear connectors, were tested. Additionally, a detailed numerical analysis was performed to verify the experimental results, which indicated that a higher-strength steel beam and thicker concrete slab can effectively enhance the stiffness and flexural capacity of the composite slim floor beam. Based on plastic mechanics and limit analysis theory, a calculation method was derived to estimate the ultimate flexural strength of a composite slim floor beam, and a comparison between the calculation and experimental results shows that the theoretical results exhibit good agreement with the experimental results, and the proposed analysis method can be used in future studies to gain a better understanding of the ultimate flexural strength of composite slim floor beams.

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Zhang, Kexin. "INFLUENCE ANALYSIS OF NATURAL VIBRATION CHARACTERISTICS OF STEEL BOX GIRDER WITH SINGLE CABLE FACE AND LARGE CANTILEVER." Stavební obzor - Civil Engineering Journal 31, no. 4 (December 31, 2022): 647–59. http://dx.doi.org/10.14311/cej.2022.04.0049.

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In recent years, there have been cases of strengthening bridge structures with polyurethane cement mortar. To further explore the properties of polyurethane materials, the effects of emery, lime, quartz sand and cement on the mechanical properties of polyurethane powder composites are studied by three-point flexural test. In the flexural test, the polyurethane cement composite formed a control group by changing the content of polyester polyol. The flexural strength and ductility are improved to a certain extent due to the addition of polyester polyol.The average flexural strength of other polyurethane powder composites such as polyurethane emery test block is 45.1 MPa and the corresponding strain is 6203 με, the average flexural strength of polyurethane lime test block is 33.4 MPa and the corresponding strain is 6470 με, the average flexural strength of polyurethane quartz sand test block is 49.23 MPa and the corresponding strain is 7521 με. The results show that the flexural strength of polyurethane emery material and polyurethane quartz sand material is higher than that of polyurethane cement, which can be used to replace cement to a certain extent to reduce the cost of polyurethane composite material.

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Cheng, Peng, Carla Davila, and Gene Hou. "Static, Vibration Analysis and Sensitivity Analysis of Stepped Beams Using Singularity Functions." Journal of Structures 2014 (January 20, 2014): 1–13. http://dx.doi.org/10.1155/2014/234085.

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A systematic approach is presented in this paper to derive the analytical deflection function of a stepped beam using singularity functions. The discontinuities considered in this development are associated with the jumps in the flexural rigidity and the applied loads. This approach is applied to static and vibration analyses of stepped beams. The same approach is later extended to perform sensitivity analysis of stepped beams. This is done by directly differentiating the analytical deflection function with respect to any beam-related design variable. The particular design variable considered here is the location of discontinuity in flexural rigidity. Example problems are presented in this paper to demonstrate and verify the derivation process.

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Sangamesh, Rajole, Naveen Kumar, K. S. Ravishankar, and S. M. Kulkarni. "Mechanical Characterization and Finite Element Analysis of Jute-Epoxy Composite." MATEC Web of Conferences 144 (2018): 02014. http://dx.doi.org/10.1051/matecconf/201814402014.

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Natural fiber composite materials are such an appropriate material, that replaces synthetic composite materials for many of practical applications where we need high strength and low density. Natural fiber composites combine the technological, ecological and economical aspects. This leads to discovering its vast applications in the aeronautics, automotive, marine and sporting sectors. This paper deals with the study on mechanical characterization (Tensile, Compression and Flexural) of jute/epoxy (JE) polymer composite. The flexural properties of composites are experimentally tested and are simulated in commercially available FEA software. Flexural tested results are in good agreement with FEA results. Scanning electron microscopy (SEM) analysis of the failed samples reveals the matrix dominated failure.

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Yang, Lai Xia, Ying Bao Xue, Xue Gang Zhou, and Rong Xia Chai. "Based on SLS Rapid Prototyping Parts Glycosylation Performance Analysis." Applied Mechanics and Materials 644-650 (September 2014): 4905–8. http://dx.doi.org/10.4028/www.scientific.net/amm.644-650.4905.

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The use of sucrose and starch powder mixture is prepared by selective laser sintering forming parts mode, and the determination and calculation of dimensional accuracy and flexural strength of sintered parts. The results show, Sugar-based materials as raw materials can accumulate molding machine by SLS, and flexural strength and dimensional accuracy to meet the requirements.

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Avramov, K. V., O. S. Galas, O. K. Morachkovskii, and C. Pierre. "Analysis of flexural-flexural-torsional nonlinear vibrations of twisted rotating beams with cross-sectional deplanation." Strength of Materials 41, no. 2 (March 2009): 200–208. http://dx.doi.org/10.1007/s11223-009-9111-x.

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Tang, Jiajun, Ming Ma, Yun Bao, and Yupeng Yao. "Orthogonal Analysis of Flexural Capacity of Beams Reinforced by High Strength Reinforcement and Ultra High Performance Concrete with Coarse Aggregate." Scientific Journal of Technology 4, no. 8 (August 20, 2022): 23–30. http://dx.doi.org/10.54691/sjt.v4i8.1644.

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In order to study the influencing factors of the flexural capacity of ultra high performance concrete with coarse aggregate (UHPC-CA) beams with high strength reinforcement, the orthogonal test method was used to analyze the influence of reinforcement grade, reinforcement diameter, section effective height and concrete strength grade on the flexural capacity of UHPC-CA beams with high strength reinforcement. The results show that the diameter of reinforcement is an important significant factor affecting the flexural capacity of UHPC-CA beams with high-strength reinforcement, and the grade of reinforcement and the effective height of section are general significant factors. With the increase of the three factors, the flexural capacity of the beam is gradually improved. The influence of concrete strength grade on the flexural capacity of UHPC-CA beams with high-strength reinforcement is small. With the increase of concrete strength grade, the flexural capacity first decreases slightly and then increases slightly. The effect of reinforcement ratio on flexural capacity of UHPC-CA beams with ordinary strength reinforcement is greater than that of UHPC-CA beams with high strength reinforcement.

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Du, Chuang, Xian Rong, and Xue Jun Liu. "The Finite Element Analysis of CLAC Beam." Advanced Materials Research 468-471 (February 2012): 2491–94. http://dx.doi.org/10.4028/www.scientific.net/amr.468-471.2491.

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In this paper, a comprehensive numerical investigation is presented on the behaviour of ceramsite light aggregate concrete(CLAC) beam by the non-linear finite element method. The investigation includes the entire process of the beam from loading to failure. Numerical analysis results show that the flexural behavior of CLAC beam is obtained by numerical simulation,including load-deflection curve, cross section stress and crack development ect. Numerical simulation may replace the actual experiment for study on flexural behavior of CLAC beam.

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Chen, Jun, Jia Lv, Qi Lin Zhang, Zhi Xiong Tao, and Jun Chen. "Experimental Study and Finite Analysis on Flexural Capacity of Laminated Glass." Advanced Materials Research 243-249 (May 2011): 258–62. http://dx.doi.org/10.4028/www.scientific.net/amr.243-249.258.

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Laminated glass has been increasing widely used in high rise buildings as a kind of safety glass in recent years. So we should analyze its material property. In this paper, we use flexural experiments and ANSYS program to analyze the main factors that affect the flexural capacity of the laminated glass. The test results show that the flexural capacity is closely related to film. And the ANSYS program had got good agreement with the experimental results. Comparison of experimental results with calculated ones indicates that the current design code will lead to conservative results and the equivalent thickness of laminated glasses provided in the code should be further discussed.

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Journal articles on the topic 'Flexural analysis'

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