scholarly journals Results verification of numerical simulation of the side impact of a vehicle in a three-point bending test

2021 ◽  
Vol 1199 (1) ◽  
pp. 012055
Author(s):  
E Evin ◽  
S Nemeth
Keyword(s):  
Numerical Simulation ◽  
Material Model ◽  
Alloyed Steel ◽  
Side Impact ◽  
Bending Test ◽  
Two Phase ◽  
Three Point Bending ◽  
Deformation Work ◽  
Deformation Force ◽  
Micro Alloyed Steel

Abstract The research objective was to use numerical simulation to verify safety characteristics of deformation zone reinforcements subjected to bending, obtained from experimental results of the stretch-bending test. The methodology proposed for result verification by means of numerical simulation using a three-point bending test was verified on a sheet metal strip made of micro alloyed steel H 220 PD and a two-phase ferritic-martensitic steel DP 600. Material data for the material model according to Krupkovsky were determined in the tensile test. The measured data were processed tabularly and graphically. A comparison of the deformation work constant and the stiffness and deformation force constants shows that a very good match between the measured and the calculated characteristics has been achieved. Based on the data obtained, it can be assumed that it is possible to reduce the weight of deformation elements while maintaining the required safety characteristics by replacing micro alloyed steel H 220PD with the two-phase DP steel.

scholarly journals Experimental and Numerical simulation of a Three Point Bending Test of a Stainless Steel Beam

2021 ◽  
Vol 55 ◽  
pp. 1114-1121
Author(s):  
Daniel Jindra ◽  
Zdeněk Kala ◽  
Jiří Kala ◽  
Stanislav Seitl
Keyword(s):  
Numerical Simulation ◽  
Stainless Steel ◽  
Bending Test ◽  
Steel Beam ◽  
Three Point Bending

Verification of Numerical Model for Trabecular Tissue Using Compression Test and Time-Lapse X-Ray Radiography Based on Material Model Determined from Three-Point Bending Test of Single Trabecula

2013 ◽  
Vol 586 ◽  
pp. 265-269 ◽  
Author(s):  
Petr Zlámal ◽  
Tomáš Doktor ◽  
Ondřej Jiroušek ◽  
Ivan Jandejsek
Keyword(s):  
Compression Test ◽  
Plastic Material ◽  
Material Model ◽  
Cylindrical Sample ◽  
Bending Test ◽  
Micro Computed Tomography ◽  
Fe Method ◽  
X Ray ◽  
Three Point Bending ◽  
Complex Sample

The aim of this study is to determine constitutive constants for elasto-plastic material model with damage for single trabecula based on the indirect simulation of micromechanical testing and its verification at macro level using compression test of the cylindrical sample of the trabecular tissue. Three-point bending test of isolated trabeculae was performed in a shielding box and deflection of the sample was acquired using X-ray microradiography. Measured values (displacements of markers) were used for indirect identification of the material model for single trabecula using finite element (FE) method. The bending test was simulated and results were fitted to experimentally obtained values and the appropriate set of material constants was determined. To verify the applicability of the identified material model the compression test of the complex sample was carried out. Cylindrical sample was incrementally loaded and each loading state was captured using the micro-computed tomography. Material model identified from three-point bending test was applied to the model of complex sample and the simulation of the compression test was performed.

Numerical Simulation of Three-Point Bending Test for Asphalt Mixtures

2022 ◽  
Author(s):  
Hongyan Ma ◽  
Peiyuan Cheng ◽  
Mengxi Lv ◽  
Liangliang Chen ◽  
Canlin Zhang
Keyword(s):  
Numerical Simulation ◽  
Asphalt Mixtures ◽  
Bending Test ◽  
Three Point Bending

Simulation of Three-Point Bending Test of Titanium Foam for Biomedical Applications

2008 ◽  
Vol 32 ◽  
pp. 237-240 ◽  
Author(s):  
S. Kashef ◽  
S.A. Asgari ◽  
Peter D. Hodgson ◽  
Wen Yi Yan
Keyword(s):  
Biomedical Applications ◽  
Material Model ◽  
Bending Test ◽  
Published Data ◽  
Mechanical Behaviors ◽  
Foam Material ◽  
New Approach ◽  
Three Point Bending ◽  
Al Foam ◽  
Titanium Foam

Using Titanium (Ti) foam as an implant material is a new approach for biomedical applications and it is important to understand the mechanical behaviors of this new foam material. In the present study, the bending of the Ti foam has been simulated and compared against recently published data [1]. FE Analysis has been performed by Abaqus software. Stiffness and Yield strength of foams between 50% (cortical bone) to 80% (cancellous bone) porosity range were considered. This study showed that crushable foam material model in Abaqus, which has developed primarily for Aluminum (Al) foam alloys, is also valid for Ti Foam before any crack or damage occurs in the sample.

Bending Collapse Behavior of Tubular Structure under Impact

2018 ◽  
Vol 910 ◽  
pp. 111-116
Author(s):  
Minoru Yamashita ◽  
Naoki Kunieda ◽  
Makoto Nikawa
Keyword(s):  
Numerical Simulation ◽  
Cross Section ◽  
Deformation Mode ◽  
Tubular Structure ◽  
Bending Test ◽  
Low Friction ◽  
Absorbed Energy ◽  
Three Point Bending ◽  
Absorption Performance ◽  
Collapse Behavior

Three point bending test of aluminum tubular structure with hat cross-section was carried out under impact condition. The structures which were strengthened with carbon fiber reinforced thermoplastic sheet attached to hat-top or hat-side were also tested. When the structure made with only aluminum was bent, one-lobe deformation mode arose in most cases, where the buckling lobe was formed at center exhibiting very low deformation resistance. This mode was found to be attributed to the low friction at central anvil by conducting the numerical simulation. The energy absorption performance was evaluated for a variety of structures. When the sheet attachment was applied for the structure with one-lobe deformation mode, the absorbed energy was improved drastically.

scholarly journals Hot Deformation Characteristics and 3-D Processing Map of a High-Titanium Nb-Micro-alloyed Steel

Materials ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1501 ◽  
Author(s):  
Pingping Qian ◽  
Zhenghua Tang ◽  
Li Wang ◽  
Charles W. Siyasiya
Keyword(s):  
Hot Deformation ◽  
Peak Stress ◽  
Material Model ◽  
Alloyed Steel ◽  
Avrami Equation ◽  
Processing Maps ◽  
Compression Tests ◽  
Stress Strain ◽  
Distribution Maps ◽  
Micro Alloyed Steel

Hot deformation behavior of a high-titanium Nb-micro-alloyed steel was investigated by conducting hot compression tests at the temperature of 900–1100 °C and the strain rate of 0.005–10 s−1. Using a sinh type constitutive equation, the apparent activation energy of the examined steel was 373.16 kJ/mol and the stress exponent was 6.059. The relations between Zener–Hollomon parameters versus peak stress (strain) or steady-state stress (strain) were successfully established via the Avrami equation. The dynamic recrystallization kinetics model of the examined steel was constructed and the validity was confirmed based on the experimental results. The 3-D atomic distribution maps illustrated that strain can significantly affect the values of power dissipation efficiency and the area of instability domains. The 3-D processing maps based on a dynamic material model at the strains of 0.2, 0.4, 0.6 and 0.8 were established. Based on traditional and 3-D processing maps and microstructural evaluation, the optimum parameter of for a high-titanium Nb-micro-alloyed steel was determined to be 1000–1050 °C/0.1–1 s−1.

scholarly journals Determining Tensile Strength of Rock by the Direct Tensile, Brazilian Splitting, and Three-Point Bending Methods: A Comparative Study

2021 ◽  
Vol 2021 ◽  
pp. 1-16
Author(s):  
Zhengjun Huang ◽  
Ying Zhang ◽  
Yuan Li ◽  
Dong Zhang ◽  
Tong Yang ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Tensile Strength ◽  
Damage Evolution ◽  
Failure Modes ◽  
Bending Test ◽  
Evolution Process ◽  
Internal Crack ◽  
Three Point Bending ◽  
Direct Tensile ◽  
Brazilian Splitting

To accurately obtain the tensile strength of rock and fully understand the evolution process of rock failure is one of the key issues to the research of rock mechanics theories and rock mass engineering applications. Using direct tensile, Brazilian splitting, and three-point bending test methods, we performed indoor and numerical simulation experiments on marble, granite, and diabase and investigated the tensile strength and damage evolution process of several typical rocks in the three different tests. Our experiments demonstrate that (1) the strength is about 10% greater in the Brazilian splitting than in the direct tensile, while the tensile modulus is lower; it is the highest in the three-point bending, which is actually subjected to the bending moment and suggested as one of the indexes to evaluate the tensile strength of rock; (2) the strength in splitting tests is strikingly different, while the strain law is basically similar; the direct tensile test with precut slits is more attainable than that with no-cut slits, with an uninfluenced strength; (3) the failure modes of rocks using different methods are featured by different lithology, while their final modes are basically the same under the same method; (4) PFC and RFPA numerical simulation tests are effective to analyze the internal crack multiplication and acoustic emission changes in the rock as well as the damage evolution process of rock in different tests.

Modification of MnS inclusion by tellurium in 38MnVS6 micro-alloyed steel

2020 ◽  
Vol 117 (6) ◽  
pp. 615
Author(s):  
Ping Shen ◽  
Lei Zhou ◽  
Qiankun Yang ◽  
Zhiqi Zeng ◽  
Kenan Ai ◽  
...  
Keyword(s):  
Fatigue Life ◽  
Aspect Ratio ◽  
Strong Influence ◽  
Experimental Results ◽  
Alloyed Steel ◽  
Equivalent Diameter ◽  
Small Aspect Ratio ◽  
Steel Quality ◽  
Eds Analysis ◽  
Micro Alloyed Steel

In 38MnVS6 steel, the morphology of sulfide inclusion has a strong influence on the fatigue life and machinability of the steel. In most cases, the MnS inclusions show strip morphology after rolling, which significantly affects the steel quality. Usually, the MnS inclusion with a spherical morphology is the best morphology for the steel quality. In the present work, tellurium was applied to 38MnVS6 micro-alloyed steel to control the MnS inclusion. Trace tellurium was added into 38MnVS6 steel and the effect of Te on the morphology, composition, size and distribution of MnS inclusions were investigated. Experimental results show that with the increase of Te content, the equivalent diameter and the aspect ratio of inclusion decrease strikingly, and the number of inclusions with small aspect ratio increases. The inclusions are dissociated and spherized. The SEM-EDS analysis indicates that the trace Te mainly dissolves in MnS inclusion. Once the MnS is saturated with Te, MnTe starts to generate and wraps MnS. The critical Te/S value for the formation of MnTe in the 38MnV6 steel is determined to be approximately 0.075. With the increase of Te/S ratio, the aspect ratio of MnS inclusion decreases and gradually reaches a constant level. The Te/S value in the 38MnVS6 steel corresponding to the change of aspect ratio from decreasing to constant ranges from 0.096 to 0.255. This is most likely to be caused by the saturation of Te in the MnS inclusion. After adding Te in the steel, rod-like MnS inclusion is modified to small inclusion and the smaller the MnS inclusion, the lower the aspect ratio.

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